6 SPEED GEARHEAD LATHE MODEL SB1053 14" X 40" MODEL SB1054F 16" X 40" w/DRO MODEL SB1055F 16" X 60" w/DRO OWNER'S MANUAL © June, 2011 by South Bend Lathe Co. For Machines Mfg.
Scope of Manual This manual helps the reader understand the machine, how to prepare it for operation, how to control it during operation, and how to keep it in good working condition. We assume the reader has a basic understanding of how to operate this type of machine, but that the reader is not familiar with the controls and adjustments of this specific model. As with all machinery of this nature, learning the nuances of operation is a process that happens through training and experience.
Table of Contents INTRODUCTION.....................................................3 About This Machine.............................................. 3 Foreword.............................................................. 3 Capabilities.......................................................... 3 Features............................................................... 3 General Identification........................................... 4 Controls & Components.......................................
Compound Rest Handwheel................................ 51 Spindle Speed...................................................... 51 Determining Spindle Speed................................. 51 Setting Spindle Speed......................................... 52 Configuration Examples...................................... 52 Power Feed.......................................................... 53 Power Feed Controls........................................... 54 Setting Feed Rate..................................
For Machines Mfg. Since 3/11 INTRODUCTION 16-Speed Gearhead Lathe About This Machine Foreword Features "The screw cutting engine lathe is the oldest and most important of machine tools and from it all other machine tools have been developed. It was the lathe that made possible the building of the steamboat, the locomotive, the electric motor, the automobile and all kinds of machinery used in industry. Without the lathe our great industrial progress of the last century would have been impossible.
INTRODUCTION 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 General Identification A C D F E B H G I J K U L T M S N R Q P O Figure 1. General identification (Model SB1054F shown). A. B. C. D. E. F. G. H. I. J.
For Machines Mfg. Since 3/11 INTRODUCTION Controls & Components Refer to Figures 2–9 and the following descriptions to become familiar with the features and basic controls of this lathe. This knowledge will be necessary to properly set up the lathe for the test run and spindle break-in. To reduce the risk of serious injury when using this machine, read and understand this entire manual before beginning any lathe operations.
INTRODUCTION 16-Speed Gearhead Lathe Feed Controls For Machines Mfg. Since 3/11 Coolant Switch: Starts and stops the coolant pump. Fluid flow is controlled by the valve on the coolant nozzle. Feed Range Lever Power Light: Illuminates when power is enabled to all lathe electrical controls. STOP Button: Cuts power to the spindle motor and coolant pump. Jog Button: Turns spindle motor ON when being pressed. Feed Direction Lever Quick-Change Gearbox Controls Figure 5. Feed controls on headstock.
INTRODUCTION For Machines Mfg. Since 3/11 Carriage Controls F. C B D M I L H. Thread Dial Chart: For each inch thread, displays which number on the thread dial to engage the half nut. I. Half Nut Lever: Engages and disengages the half nut for threading operations. J. Quick-Change Feed Direction Knob: Changes direction of carriage feed or the cross slide feed without having to stop the lathe and move the headstock feed direction lever.
16-Speed Gearhead Lathe INTRODUCTION Tailstock Controls B A Foot Brake D C E H G This lathe is equipped with a foot brake (see Figure 10) to quickly stop the spindle instead of allowing it to coast to a stop on its own. Pushing the foot brake while the spindle is ON also cuts power to the motor. After the foot brake is used, the spindle ON/ OFF lever must be returned to the OFF (middle) position to reset the spindle switches, which will enable spindle rotation. F Spindle ON/OFF Lever Figure 9.
For Machines Mfg. Since 3/11 INTRODUCTION 16-Speed Gearhead Lathe Product Specifications P.O. Box 2027, Bellingham, WA 98227 U.S.A. PHONE: (360) 734-1540 • © South Bend Lathe Co. www.southbendlathe.com MODEL SB1053, SB1054F, SB1055F 16 SPEED GEARHEAD LATHES Model Number SB1053 SB1054F SB1055F 2970 lbs. 3080 lbs. 3300 lbs. Width (side-to-side)/Depth (front-to-back)/Height 86 x 32-3/4 x 48 in. 86 x 32-3/4 x 49 in. 105-1/2 x 32-3/4 x 49 in. Foot Print (Width/Depth) 82 x 19-1/2 in.
16-Speed Gearhead Lathe Model Number INTRODUCTION For Machines Mfg. Since 3/11 SB1053 SB1054F SB1055F TEFC Induction TEFC Induction TEFC Induction 7.5 HP 7.5 HP 7.
For Machines Mfg. Since 3/11 Model Number INTRODUCTION 16-Speed Gearhead Lathe SB1053 SB1054F SB1055F Spindle Bore 2.06 in. 2-1/16 in. 2-1/16 in. Spindle Taper MT#6 MT#6 MT#6 16 16 16 40 – 2000 RPM 40 – 2000 RPM 40 – 2000 RPM Headstock Information Number of Spindle Speeds Range of Spindle Speeds Spindle Type Spindle Bearings D1-6 Camlock D1-6 Camlock D1-6 Camlock NTN Tapered Roller NTN Tapered Roller NTN Tapered Roller 6 in. 6 in. 6 in. MT#4 MT#4 MT#4 2.047 in. 2.047 in.
16-Speed Gearhead Lathe Model Number INTRODUCTION For Machines Mfg.
For Machines Mfg. Since 3/11 SAFETY 16-Speed Gearhead Lathe SAFETY Understanding Risks of Machinery Operating all machinery and machining equipment can be dangerous or relatively safe depending on how it is installed and maintained, and the operator's experience, common sense, risk awareness, working conditions, and use of personal protective equipment (safety glasses, respirators, etc.). The owner of this machinery or equipment is ultimately responsible for its safe use.
-Speed Gearhead Lathe SAFETY For Machines Mfg. Since 3/11 Entanglement: Loose clothing, gloves, neckties, jewelry or long hair may get caught in moving parts, causing entanglement, amputation, crushing, or strangulation. Reduce this risk by removing/securing these items so they cannot contact moving parts. Chuck Keys or Adjusting Tools: Tools used to adjust spindles, chucks, or any moving/ rotating parts will become dangerous projectiles if left in place when the machine is started.
For Machines Mfg. Since 3/11 SAFETY 16-Speed Gearhead Lathe Additional Metal Lathe Safety Clearing Chips. Metal chips can easily cut bare skin—even through a piece of cloth. Avoid clearing chips by hand or with a rag. Use a brush or vacuum to clear metal chips. Chuck Key Safety. A chuck key left in the chuck can become a deadly projectile when the spindle is started. Always remove the chuck key after using it. Develop a habit of not taking your hand off of a chuck key unless it is away from the machine.
16-Speed Gearhead Lathe SAFETY For Machines Mfg. Since 3/11 Chuck Safety Entanglement. Entanglement with a rotating chuck can lead to death, amputation, broken bones, or other serious injury. Never attempt to slow or stop the lathe chuck by hand, and always roll up long sleeves, tie back long hair, and remove any jewelry or loose apparel BEFORE operating. Using Correct Equipment.
For Machines Mfg. Since 3/11 P R E PA R AT I O N 16-Speed Gearhead Lathe PREPARATION Preparation Overview Things You'll Need The purpose of the preparation section is to help you prepare your machine for operation. The list below outlines this basic process. Specific steps for each of these points will be covered in detail later in this section. The typical preparation process is as follows: 1. Unpack the lathe and inventory the contents of the box/crate. 2. Clean the lathe and its components. 3.
16-Speed Gearhead Lathe P R E PA R AT I O N Power Supply Requirements Availability Before installing the machine, consider the availability and proximity of the required power supply circuit. If an existing circuit does not meet the requirements for this machine, a new circuit must be installed.
For Machines Mfg. Since 3/11 P R E PA R AT I O N 16-Speed Gearhead Lathe Grounding Requirements This machine must be grounded! In the event of certain types of malfunctions or breakdowns, grounding provides a path of least resistance for electric current in order to reduce the risk of electric shock. Improper connection of the equipment-grounding wire can result in a risk of electric shock. The wire with green insulation (with or without yellow stripes) is the equipment-grounding wire.
16-Speed Gearhead Lathe P R E PA R AT I O N Unpacking This item was carefully packaged to prevent damage during transport. If you discover any damage, please immediately call Customer Service at (360) 734-1540 for advice. You may need to file a freight claim, so save the containers and all packing materials for possible inspection by the carrier or its agent. For Machines Mfg. Since 3/11 B A C D G E Inventory Main Inventory 1: (Figure 13) Steady Rest Assembly.....................................
For Machines Mfg. Since 3/11 P R E PA R AT I O N 16-Speed Gearhead Lathe Cleaning & Protecting The unpainted surfaces are coated at the factory with a heavy-duty rust preventative that prevents corrosion during shipment and storage. The benefit of this rust preventative is that it works very well. The downside is that it can be time-consuming to thoroughly remove. Be patient and do a careful job when cleaning and removing the rust preventative.
P R E PA R AT I O N 16-Speed Gearhead Lathe Location For Machines Mfg. Since 3/11 Weight Load Physical Environment The physical Environment environment where your machine Physical is operated is important for safe operation and Electrical Installation longevity of parts. For best results, operate this machine in a dry environment that is free from Lighting excessive moisture, hazardous or flammable Weight Load chemicals, airborne abrasives, or extreme Space conditions.
For Machines Mfg. Since 3/11 P R E PA R AT I O N Lifting & Moving 4. This machine and its parts are heavy! Serious personal injury may occur if safe moving methods are not used. To reduce the risk of a lifting or dropping injury, ask others for help and use power lifting equipment. To further balance the load, loosen the carriage lock bolt (see Figure 17), disengage the half nut lever, disengage the feed control lever, then use the carriage handwheel to move the carriage next to the tailstock.
16-Speed Gearhead Lathe P R E PA R AT I O N Attach the lifting straps to the forklift forks or a hook and chain, as shown in Figures 19–20. 6. Forklift Forks Lifting Straps For Machines Mfg. Since 3/11 Leveling & Mounting You must level your machine and either use the included foot pads and leveling hardware or bolt and shim your lathe to the floor.
P R E PA R AT I O N For Machines Mfg. Since 3/11 To level the machine, use a precision level to make sure the bedways are level from side-toside and from front-to-back. — If using the included leveling pads (see Figure 22), place them under the six leveling jack bolt locations, then adjust the bolts to level the lathe. 16-Speed Gearhead Lathe Assembly With the exception of the handwheel handles, the lathe is shipped fully assembled.
16-Speed Gearhead Lathe P R E PA R AT I O N In addition to the reservoirs, we also recommend that you lubricate all other points on the machine at this time. This can be accomplished by following the maintenance schedule on Page 65. Note: If this lathe was shipped with oil in the reservoirs, do not change that oil until after the test run and break-in procedures. Adding Coolant Add the coolant of your choice now.
For Machines Mfg. Since 3/11 P R E PA R AT I O N Note: For the Model SB1053, thread the power cord through an approved and properly sized strain relief as it enters the electrical cabinet. The strain relief must be tightened against the outer jacket of the cord; however, avoid over-tightening the strain relief or it may crush the cord and cause a short. Electrocution could occur if you attempt this procedure with the power wires connected to the power source.
16-Speed Gearhead Lathe P R E PA R AT I O N Test Run After all preparation steps have been completed, the machine and its safety features must be tested to ensure correct operation. If you discover a problem with the operation of the machine or its safety components, shut the machine down, disconnect it from power, and do not operate it further until you have resolved the problem. For Machines Mfg. Since 3/11 4. DISCONNECT LATHE FROM POWER! 5.
For Machines Mfg. Since 3/11 8. P R E PA R AT I O N Set the spindle speed to 40 RPM. You may have to manually rock the chuck back-andforth to make the gears mesh. a. Turn the two-speed motor switch to the LOW position. b. Move the spindle range lever so that the indicator points to the upper line on the right—this is the low range for this motor speed (see Figure 31). c. Rotate the spindle speed lever so that the indicator points to the "A".
16-Speed Gearhead Lathe P R E PA R AT I O N 12. Connect the lathe to the power source, then turn the master power switch to the ON position (see Figure 34). For Machines Mfg. Since 3/11 — When operating correctly, the machine runs smoothly with little or no vibration or rubbing noises. — Investigate and correct strange or unusual noises or vibrations before operating the machine further. Always disconnect the machine from power when investigating or correcting potential problems.
For Machines Mfg. Since 3/11 P R E PA R AT I O N 17. Move the spindle ON/OFF lever to the OFF (middle) position, reset the STOP button by twisting it clockwise until it pops out, then restart spindle rotation. 18. Push the foot brake. The lathe should come to a quick stop. — If the brake pedal has no effect on the lathe, push the STOP button, and refer to the Brake & Switch subsection on Page 80 to make any required adjustments. After verifying the brake works correctly, continue with the next step. 19.
16-Speed Gearhead Lathe P R E PA R AT I O N Spindle Break-In The high-quality bearings and gears used in this lathe are manufactured to very close tolerances. Before subjecting the lathe to full loads, it is essential to complete the spindle break-in process as described below. This will ensure the best results and maximum life of the precision components inside the lathe. For Machines Mfg. Since 3/11 6.
For Machines Mfg. Since 3/11 O P E R AT I O N 16-Speed Gearhead Lathe OPERATION Operation Overview To complete a typical operation, the operator does the following: The purpose of this overview is to provide the novice machine operator with a basic understanding of how the machine is used during operation, so they can more easily understand the controls discussed later in this manual. 1.
16-Speed Gearhead Lathe O P E R AT I O N For Machines Mfg. Since 3/11 Chuck & Faceplate Mounting Installation & Removal Devices This lathe is equipped with a D1-type spindle nose. This type of spindle uses camlocks to securely mount a chuck or faceplate with repeatable precision and ease. Because chucks are heavy and often awkward to hold, some kind of lifting, support, or protective device should be used during installation or removal.
O P E R AT I O N For Machines Mfg. Since 3/11 Chuck Installation To ensure accurate work, it is extremely important to make sure the spindle nose and chuck mating surfaces/tapers are clean. Even a small amount of lint or debris can affect accuracy. 16-Speed Gearhead Lathe 5. Incrementally tighten the camlocks in a criss-cross or star pattern to ensure that the chuck seats evenly against the spindle. 6.
16-Speed Gearhead Lathe 7. O P E R AT I O N Verify that the chuck fits the spindle properly by checking for any gaps between the mating surfaces. Chuck Removal — If there are no gaps, proceed to Step 8. 1. DISCONNECT LATHE FROM POWER! — If there is a gap, remove the chuck, reclean the mating surfaces carefully, and re-install. If the problem persists, refer to Troubleshooting. 2. Use an appropriate lifting, support, or protective device to protect the ways and support the chuck. 3.
O P E R AT I O N For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe Scroll Chuck Clamping 4-Jaw Chuck This scroll-type chuck has an internal scroll-gear that moves all jaws in unison when adjusted with the chuck key. This chuck will hold cylindrical parts on-center with the axis of spindle rotation and can be rotated at high speeds if the workpiece is properly clamped and balanced. Never mix jaw types or positions to accommodate an odd-shaped workpiece.
O P E R AT I O N 16-Speed Gearhead Lathe 5. Tighten each jaw in small increments. After you have adjusted the first jaw, continue tightening in an opposing sequence, as shown in Figure 43. 1 3 Workpiece Centerpoint 4 After the workpiece is held in place by the jaws, turn the chuck by hand and pay attention to the workpiece alignment.
For Machines Mfg. Since 3/11 O P E R AT I O N To mount a non-concentric workpiece to the faceplate: 1. DISCONNECT LATHE FROM POWER! 2. Protect the bedway with a piece of plywood. 3. With the help from another person or a holding device to support the workpiece, position it onto the faceplate and clamp it in place with a minimum of three independent clamping devices (see Figure 45 for an example).
O P E R AT I O N 16-Speed Gearhead Lathe Installing Tooling This tailstock uses a quill with an MT#4 taper that has a lock slot in the back of the bore that accepts tang arbors and drill bits (see Figures 47–48 for examples). Solid End Open End Solid End Screw End Tang However, other tooling without tangs, such as the four remaining tools shown in Figure 47, can still be used if the potential load will not override the strength of the tapered fit.
O P E R AT I O N For Machines Mfg. Since 3/11 Removing Tooling 16-Speed Gearhead Lathe Offsetting Tailstock 1. Use a shop rag to hold the tool. 2. Rotate the tailstock handwheel counterclockwise until the tool is forced out of the quill. — If the tool does not come loose by retracting the quill, extend the quill and use a drift key in the slot shown in Figure 49 to remove the tool. The tailstock can be offset from the spindle centerline for turning tapers.
16-Speed Gearhead Lathe O P E R AT I O N 2. Rotate the adjustment cap screws in opposite directions for the desired offset (see the illustration in Figure 50). 3. Retighten the clamping hex bolts underneath the tailstock to secure the offset. 3. For Machines Mfg. Since 3/11 Use the other piece of round stock to make a dead center, and turn it to a 60° point, as illustrated in Figure 52.
For Machines Mfg. Since 3/11 O P E R AT I O N Note: If necessary in the following step, refer to Offsetting Tailstock on Page 41 for detailed instructions. 8. Use calipers to measure both ends of the workpiece. — If the test stock is thicker at the tailstock end, move the tailstock toward the front of the lathe 1⁄2 the distance of the amount of taper (see Figure 54). 16-Speed Gearhead Lathe Centers Figure 56 shows the MT#4 dead centers included with the lathe.
16-Speed Gearhead Lathe O P E R AT I O N For Machines Mfg. Since 3/11 Live Centers Removing Center from Spindle A live center has bearings that allow the center tip and the workpiece to rotate together; it can be installed in the spindle and the tailstock quill for higher speeds. However, a live center typically does not provide the same level of rigidity as a dead center, and final workpiece accuracy can suffer as a result.
For Machines Mfg. Since 3/11 3. O P E R AT I O N Use the tailstock handwheel to feed the quill out from the casting approximately 1". Note: Do not extend the quill more than 2" or stability and accuracy will be reduced. 4. Insert the center into the tailstock quill. 5. Seat the center firmly into the quill during workpiece installation by rotating the quill handwheel clockwise to apply pressure, with the center engaged in the center hole in the workpiece.
O P E R AT I O N 16-Speed Gearhead Lathe Steady Rest 4. The steady rest supports long shafts and can be mounted anywhere along the length of the bedway. For Machines Mfg. Since 3/11 Loosen the clamp knob that secures the two halves of the rest and open the top portion, as shown in Figure 62. ! Familiarize yourself with the steady rest components shown in Figure 61 to better understand its operation. Finger Adjustment Knob Leaf Screw Finger Roller Clamp Knob Figure 62.
For Machines Mfg. Since 3/11 O P E R AT I O N Follow Rest The follow rest mounts to the saddle with two cap screws (see Figure 63). It is used on long, slender parts to prevent workpiece deflection from the pressure of the cutting tool during operation. Adjust the follow rest fingers in the same manner as the those on the steady rest. Note: To reduce the effects of friction, lubricate the brass finger tips with generous lubricant during operation.
O P E R AT I O N 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 Compound Rest Four-Way Tool Post The compound rest handwheel has an indirectread graduated scale. This means that the distance shown on the scale represents the actual distance the cutting tool moves. The base of the compound rest has another graduated scale used for setting the cutting tool to a specific angle.
For Machines Mfg. Since 3/11 O P E R AT I O N Aligning Cutting Tool with Spindle Centerline For most operations, the cutting tool tip should be aligned with the spindle centerline, as illustrated in Figure 67. Cutting Tool Spindle Center Line Figure 67. Cutting tool aligned with spindle centerline (viewed from tailstock). Tools Needed • • Align the tip of the cutting tool with a center installed in the tailstock, as instructed on the next page.
O P E R AT I O N 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 Adjustable Feed Stop Micrometer Stop This machine features an adjustable stop system that can be used to stop the carriage at a pre-set location when it is being driven by the feed rod. This system consists of an adjustable collar on the feed rod, a stop plate on the apron, and the feed rod clutch (see Figure 69). The collar can be secured anywhere along the feed rod.
O P E R AT I O N For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe Manual Feed Spindle Speed The handwheels shown in Figure 71, and described below, allow the operator to manually move the cutting tool. Using the correct spindle speed is important for safe and satisfactory results, as well as maximizing tool life.
16-Speed Gearhead Lathe O P E R AT I O N For Machines Mfg. Since 3/11 Setting Spindle Speed Configuration Examples Selecting one of the 16 spindle speeds available is a combination of configuring the two-speed motor switch, the spindle range lever, and the spindle speed lever shown in Figure 73. Use the following examples to better understand how to read the spindle speed chart and configure the controls for the correct speed. Spindle Speed & Range Levers Example 1: Spindle Speed of 40 RPM 1.
O P E R AT I O N For Machines Mfg. Since 3/11 4. Move the spindle speed lever so that the indicator points to the letter "A". This will select the spindle speed of 40 RPM in the top row of the chart. Example 2: Spindle Speed of 1250 RPM 1. Make sure the spindle is completely stopped and the spindle ON/OFF lever is in the OFF (middle) position. 2. Turn the motor switch to the HIGH (right) position. This will make the speeds in the bottom row of the spindle speed chart available 3.
O P E R AT I O N 16-Speed Gearhead Lathe Power Feed Controls Use Figures 77–80 and the following descriptions to become familiar with the locations and functions of the controls that you will use to set up the correct power feed for your operation. Note: Before using power feed, you may have to re-configure the end gears, depending on how they are set up. Refer to End Gears on Page 56 for detailed instructions. For Machines Mfg.
For Machines Mfg. Since 3/11 O P E R AT I O N Feed Direction Knob: Changes power feed direction (see Figure 80). The advantage of this knob is that you can quickly reverse power feed direction while the spindle is rotating—without having to turn the lathe off, wait until the spindle is stopped, then use the feed direction lever on the headstock.
16-Speed Gearhead Lathe 3. 4. O P E R AT I O N The configuration string of characters to the right of the selected feed rate (LCS8W) displays the positions to set the feed controls for a feed rate of 0.18mm/rev. Position the controls as indicated in the following instructions. If needed, use the chuck key to rock the spindle back-andforth to help mesh the gears as you make adjustments. a) Move the feed range lever to the low (L) position. b) Point the left gearbox lever to the "C".
O P E R AT I O N For Machines Mfg. Since 3/11 Alternate Configuration 4. Use the alternate end gear configuration when cutting modular or diametral threads, as illustrated in Figure 84. 16-Speed Gearhead Lathe Loosen the pivot arm hex nut shown in Figure 85, then swing the pivot arm to the left so that 44T/56T gears are away from the 57T gear. Hand tighten the hex nut to keep the arm in place.
O P E R AT I O N 16-Speed Gearhead Lathe Threading Controls The following subsections describe how to use the threading controls and charts on this lathe. If you are unfamiliar with the process of cutting threads on a lathe, we strongly recommend that you read books, review industry trade magazines, or get formal training before doing any threading projects. Setting Threading Controls The threading charts on the headstock face display the settings for metric, inch, modular, and diametral threading.
For Machines Mfg. Since 3/11 O P E R AT I O N 16-Speed Gearhead Lathe Apron Controls Thread Dial The half nut lever engages the apron with the leadscrew which moves the carriage and cutting tool along the length of the workpiece for threading operations (see Figure 87). The numbers on the thread dial are used with the thread dial chart to show when to engage the half nut during inch threading. The thread dial gear must be engaged with the leadscrew for this to work.
O P E R AT I O N 16-Speed Gearhead Lathe Thread Dial Chart For Machines Mfg. Since 3/11 Even TPI Not Divisible By 4 Find the TPI (threads per inch) that you want to cut in the left column of the thread dial chart (see Figure 89), then reference the dial number to the right of it. The dial numbers indicate when to engage the half nut for a specific thread pitch. The thread dial chart can also be found on the front of the thread dial housing.
For Machines Mfg. Since 3/11 1 O P E R AT I O N ⁄4 or 3⁄4 Fractional TPI For TPI that have a 1⁄4 or 3⁄4 fraction, use position 1 on the thread dial (see Figure 94). TPI 2¼,2¾, 3¼,3¾ Position 1 Only 16-Speed Gearhead Lathe Chip Drawer The chip drawer shown in Figure 96 catches swarf and metal chips during the machining process. It easily slides open to provide access to swarf during cleanup. Also, the chip drawer contains a screen that allows run-off coolant to drain back into the reservoir.
O P E R AT I O N 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 Coolant System When the coolant pump switch is turned ON, the fluid is delivered through the nozzle attached to the carriage. The flow is controlled by the valve lever at the base of the nozzle (see Figure 97). BIOLOGICAL & POISON HAZARD! Use the correct personal protection equipment when handling coolant. Follow federal, state, and fluid manufacturer requirements for proper disposal.
For Machines Mfg. Since 3/11 ACC ESSOR I ES ACCESSORIES Accessories This section includes the most common accessories available for your lathe, which may be available through your local South Bend Lathe Co. dealer. If you do not have a dealer in your area, please call us at (360) 734-1540 or email us at cs@southbendlathe.com. 16-Speed Gearhead Lathe SB1239—MT#4 High Performance Live Center South Bend® brand live centers are the best centers in the industry made with pride and uncompromising quality.
ACC ESSOR I ES 16-Speed Gearhead Lathe SB1247—MT#4 Bull Nose Center • Cr-Mo steel; hardened to HRC60 ± 1 • Taper roller & ball bearing construction • Great for turning pipes 1.81" 6.73" For Machines Mfg. Since 3/11 SB1298—SBL Bench Lathe Shop Clock SB1299—SBL Toolroom Lathe Shop Clock SB1300—SBL Lathe with Man These fine traditional shop clocks are constructed with a metal antique-finished frame. They are easy to read from a distance and measure 14" in diameter. Pictures just don't do them justice.
For Machines Mfg. Since 3/11 MAINTENANCE MAINTENANCE Maintenance Schedule ! Always disconnect power to the machine before performing maintenance. Failure to do this may result in electrocution or accidental startup injury. Daily, After Operations • • • For optimum performance from this machine, this maintenance schedule must be strictly followed. Use the chart provided on Page 66 to ensure this is done.
-66- Day 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Refer to the coolant manufacture's instructions for more information regarding coolant condition, replacement, disposal, and safety. 2 Maintenance Chart Change Coolant Change Apron Oil Change Headstock Oil Change Gearbox Oil Service Item Make copies of this page to use each month. Keep each chart as a maintenance record for your South Bend Lathe.
For Machines Mfg. Since 3/11 MAINTENANCE Lubrication 16-Speed Gearhead Lathe Adding Oil The oil fill cap is located on top of the headstock, as shown in Figure 107. The following recommended lubrication schedules are based on light-to-medium usage. For heavy use, these lubrication tasks may need to be performed more frequently than recommended here.
MAINTENANCE 16-Speed Gearhead Lathe Quick-Change Gearbox For Machines Mfg. Since 3/11 Draining Oil Oil Type....... Mobil Vactra 2 or ISO 68 Equivalent Oil Amount............................................. 1.4 Quarts Check/Add Frequency..................................... Daily Change Frequency....................................
For Machines Mfg. Since 3/11 MAINTENANCE Adding Oil Remove the twist-off fill cap shown in Figure 111, and add oil until the sight glass is halfway full. 16-Speed Gearhead Lathe One-Shot Oiler The one-shot oiler shown in Figure 113 lubricates the saddle ways with oil from the apron reservoir. To use the one-shot oiler to lubricate the ways, pull the pump knob out for two or three seconds and then push it in.
16-Speed Gearhead Lathe MAINTENANCE For Machines Mfg. Since 3/11 Leadscrew Oil Type....... Mobil Vactra 2 or ISO 68 Equivalent Oil Amount............................................. As Needed Lubrication Frequency.................................... Daily Before lubricating the leadscrew, clean it first with mineral spirits. A stiff brush works well to help clean out the threads. Make sure to move the carriage out of the way, so you can clean the entire length of the leadscrew.
For Machines Mfg. Since 3/11 MAINTENANCE End Gears Grease Type................................................ NLGI#2 Frequency................. Annually or When Changing The end gears, shown in Figure 117, should always have a thin coat of heavy grease to minimize corrosion, noise, and wear. Wipe away excess grease that could be thrown onto the V-belts and reduce optimal power transmission from the motor. Figure 117. End gears. Handling & Care 16-Speed Gearhead Lathe Lubricating 1.
MAINTENANCE 16-Speed Gearhead Lathe Coolant System Service The coolant system consists of a fluid tank, pump, and flexible nozzle. The pump pulls fluid from the tank and sends it to the valve, which controls the flow of coolant to the nozzle. As the fluid leaves the work area, it drains back into the tank through the chip drawer and catch tray where the swarf is screened out. Use Figure 118 to identify the locations of the coolant system controls and components.
For Machines Mfg. Since 3/11 MAINTENANCE Adding Fluid To change the coolant: 1. DISCONNECT LATHE FROM POWER! 2. Remove the vented cover and slide the tank out, as shown in Figure 119. Pump 1. Position the coolant nozzle over the splash guard so that it is pointing behind the lathe. If you have the optional hose, connect it to the end of the nozzle now. 2. Place the 5-gallon bucket behind the lathe and under the coolant nozzle. If you have the optional hose, place the hose in the bucket.
16-Speed Gearhead Lathe MAINTENANCE For Machines Mfg. Since 3/11 7. Pour the remaining coolant into a 5-gallon bucket and close the lid. Machine Storage 8. Clean all the sludge out of the bottom of the tank and then flush it clean. Use the second bucket to hold the waste and make sure to seal the lid closed when done. To prevent the development of rust and corrosion, the lathe must be properly prepared if it will be stored for a long period of time.
For Machines Mfg. Since 3/11 MAINTENANCE To prepare your machine for long-term storage (a year or more): 1. Run the lathe and bring all gearboxes to operating temperature, then drain and refill them with clean oil. 2. Pump out the old coolant, and remove and blow out lines with compressed air and a few drops of way oil. 3. DISCONNECT LATHE FROM POWER! 4. Thoroughly clean all unpainted, bare metal surfaces, then apply a liberal coat of way oil, heavy grease, or rust preventative.
16-Speed Gearhead Lathe MAINTENANCE Cross Slide Tools Needed: Qty Hex Wrench 3mm.................................................. 1 Hex Wrench 5mm ................................................. 1 The cross slide backlash is adjusted by loosening all four cap screws shown in Figure 122, then tightening the center set screw. This will push down on a wedge and force the leadscrew nut apart, taking up lash between the nut and leadscrew.
For Machines Mfg. Since 3/11 SERVICE 16-Speed Gearhead Lathe SERVICE Gib Adjustment The goal of adjusting the gib screws is to remove sloppiness or "play" from the ways without overadjusting them to the point where they become stiff and difficult to move. Compound Rest Gib Adjustment Screw (1 of 2) In general, loose gibs cause poor finishes and tool chatter; however, over-tightened gibs cause premature wear and make it difficult to turn the handwheels.
SERVICE 16-Speed Gearhead Lathe Note: Remove the carriage lock clamp to access the saddle gib adjustment screw on the tailstock side (see Figure 127). Carriage Lock Clamp For Machines Mfg. Since 3/11 Half Nut Adjustment The clamping pressure of the half nut is fully adjustable with a gib that can be loosened or tightened by two set screws. Use this procedure to adjust the half nut if it becomes loose from wear, or it is too tight for your preferences.
SERVICE For Machines Mfg. Since 3/11 Feed Rod Clutch Adjustment 3. The feed rod clutch helps protect the drivetrain from overload in the event of a crash, and it works with the adjustable apron stop system to disengage the feed rod from the apron. The feed clutch release point is adjusted at the factory. However, it can be re-adjusted to increase or decrease the load it will take before the clutch slips.
SERVICE 16-Speed Gearhead Lathe V-Belts 3. V-belts stretch and wear with use, so check them on a monthly basis to ensure optimal power transmission. Replace all of the V-belts if any of them show signs of glazing, fraying, or cracking. Tools Needed: Qty For Machines Mfg. Since 3/11 Turn the hex nuts on the motor mount bolts shown in Figure 133 to move the motor mount plate up or down and adjust the V-belt tension.
For Machines Mfg. Since 3/11 SERVICE Brake & Switch 5. As the brake lining wears, the foot pedal develops more travel. If the brake band is not adjusted to compensate for normal wear, the limit switch will still turn the lathe off, but the spindle will not stop as quickly. It is especially important that the brake is kept properly adjusted so you can quickly stop the spindle in an emergency. Tools Needed: 16-Speed Gearhead Lathe Remove the pedal stop shown in Figure 135.
SERVICE Locate the brake switch on the right side of the brake pedal (see Figure 137). 9. Pedal Cam Brake Switch Figure 137. Brake switch and pedal cam. For Machines Mfg. Since 3/11 Leadscrew Shear Pin Replacement The leadscrew is secured to a connecting collar that is part of the headstock drivetrain with the use of a soft-metal shear pin.
For Machines Mfg. Since 3/11 SERVICE To replace the shear pin: 5. 1. DISCONNECT LATHE FROM POWER! 2. Remove the clutch front and side covers (see Figure 139). 16-Speed Gearhead Lathe Move the retaining ring shown in Figure 141 away from the shroud washer, then move the shroud washer away from the shear pin and against the retaining ring. This will create room for you to remove the shear pin. Retaining Ring Side Cover Removed From Here Clutch Front Cover Figure 139.
SERVICE 16-Speed Gearhead Lathe 8. Insert the blow gun tip into the shear pin hole, blow out the hole with compressed air, then put a drop of oil in the hole. 9. Insert the new shear pin into the bore, as shown in Figure 143. For Machines Mfg. Since 3/11 11. Return the retaining ring against the shroud washer and position the retaining ring ears over the shear pin head, as shown in Figure 145. This will prevent the shear pin from falling out if the shroud washer should rotate during operation.
For Machines Mfg. Since 3/11 SERVICE Gap Insert Removal & Installation The gap insert directly under the spindle (see Figure 146) can be removed to create additional space for turning large diameter parts. The gap insert was installed, then ground flush with the bed at the factory to ensure a precision fit and alignment. Therefore, if the gap insert is removed, it may be difficult to re-install with the same degree of accuracy. 2. Remove the two way-end cap screws. 3.
16-Speed Gearhead Lathe TROU B LESHOOTI NG For Machines Mfg. Since 3/11 TROUBLESHOOTING If you need replacement parts, or if you are unsure how to do any of the solutions given here, feel free to call us at (360) 734-1540. Symptom Machine does not start or a circuit breaker trips. Possible Cause Possible Solution 1. (First time operation only) Lathe is wired out of phase. 1. Correct out-of-phase wiring (refer to Page 90 for details). 2. Stop button is engaged or at fault. 2.
For Machines Mfg. Since 3/11 Symptom Entire machine vibrates upon startup and while running. TROU B LESHOOTI NG Possible Cause 16-Speed Gearhead Lathe Possible Solution 1. Workpiece is unbalanced. 1. Re-install workpiece as centered with the spindle bore as possible. 2. Loose or damaged V-belt(s). 2. Re-tension/replace the V-belt(s) as necessary (see Page 80). 3. V-belt pulleys are not properly aligned. 3. Align the V-belt pulleys. 4. Worn or broken gear present. 4.
16-Speed Gearhead Lathe Symptom TROU B LESHOOTI NG Possible Cause For Machines Mfg. Since 3/11 Possible Solution Workpiece is tapered. 1. Headstock and tailstock are not properly aligned with each other. 1. Realign the tailstock to the headstock spindle bore centerline (see Page 42). Chuck jaws will not move or do not move easily. 1. Chips lodged in the jaws or scroll plate. 1. Remove jaws, clean and lubricate scroll plate, then replace jaws. Carriage will not feed, or is hard to move. 1.
For Machines Mfg. Since 3/11 ELECTRICAL 16-Speed Gearhead Lathe ELECTRICAL Electrical Safety Instructions These pages are accurate at the time of printing. In the constant effort to improve, however, we may make changes to the electrical systems of future machines. Study this section carefully. If you see differences between your machine and what is shown in this section, call Technical Support at (360) 734-1540 for assistance BEFORE making any changes to the wiring on your machine.
16-Speed Gearhead Lathe ELECTRICAL Correcting Phase Polarity Wiring This sub-section is only provided for troubleshooting. If you discover during the test run that the lathe will not operate, or that the spindle runs backwards, the lathe may be wired out of phase. Without the proper test equipment to determine the phase of power source legs, wiring machinery to 3-phase power may require trial-and-error.
ELECTRICAL For Machines Mfg.
ELECTRICAL 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 Component Location Index visual index Electrical Box, Page 93 Work Lamp, Page 98.
ELECTRICAL For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe Electrical Box Wiring box1 L3 To Work Lamp, Page 98 L1 3 3 L3 L2 L3 L1 L1 L2 1 L1 3 12 3 L2 5 L1 13 L3 21 NC 1 L1 2 T1 4 T2 To Chuck Guard Safety Switch, Page 98 Test 19 97 NO 2 22 NO 2 T1 11 17.5 98 T1 R1 95 4 3 NC 96 6 T2 S1 3 L3 L2 5 L1 12 L3 21 4 T2 NC 22 6 T3 Spindle Motor Contactors SB1053: C2301 SB1054F & SB1055F: C1601 Class 10A 21.
16-Speed Gearhead Lathe ELECTRICAL For Machines Mfg. Since 3/11 Electrical Box box photo Master Power Switch Spindle Motor Contactors & Overload Relay Pump Motor Contactors & Overload Relay Transformer Transformer Circuit Breaker Spindle/Pump Motor Circuit Breakers Figure 150. Electrical box.
Ground Ground Ground E L E CCUTTING T R I C FLUID AL CUTTING FLUID Mfg. Since 3/11 For Machines PUMP MOTOR Spindle Motor spindle and pump motor W5 W2 W6 U1 LOW U2 16-Speed Gearhead Lathe PUMP MOTOR (440V) U1 HI V1 V2 HI Yl U6 LOW W1 W2 U5 V1 U2 W1 V6 V2 V5 W LOW HI L11 L13 V U Gn Gn Ground SPINDLE MOTOR Ground Junction Box SPINDLE MOTOR (440V) Figure 151. Spindle motor location.
ELECTRICAL 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 2-Speed Motor Switch 2-SPEED MOTOR SWITCH (BOTH SIDES SHOWN) To Motor, Page 95 LOW HI HI LOW HI LOW LOW LOW 3 HI 1 6 S Front View 4 S1 HI HI 5 To Electrical Box, Page 93 T1 S1 R1 2-Speed Motor Switch Figure 153. 2-Speed motor switch.
5 4 NO 6 NC 5 0 ELECTRICAL For Machines Mfg. Since 3/11 NC A X1 16-Speed Gearhead Lathe 4 COMMON Control Panel Wiring 7 NO NO 6 COMMON NC X 1 NC A1 control panel and motor X 2 Control Panel 4 NC 3 4 14 13 22 21 Figure 154. Control panel location.
Hot L1 15-20 PLUG ELECTRICAL (as recommended) 2 6 4 For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe L1 L2 L3 Power Connection Ground L1 Hot L2 Inside Electrical Box, Page 96 L1 Hot L2 L3 MASTER POWER SWITCH L3 Hot Ground DISCONNECT SWITCH (as recommended) L1 L2 L3 To Power Supply, Page 96 Additional Component Wiring End Gear Cover Safety Switch Work Light additional component End Gear Cover Safety Switch, Figure 156 Figure 156. End Gear Cover Safety Switch location.
PARTS For Machines Mfg.
-100- 44 46 45 42 25 41 40 45 38 37 34 39 24 10 49 48 11 13 47 33 26 29 32 35 36 16 16 27 16 15 35 13 36 11 16 16 10 39 44 25 41 37 25 21 15 28 31 27 16 18 30 22 25 16 24 23 21 19 17 20 15 48 16 49 14 18 13 48 49 15 12 10 11 10 49 PARTS 29 43 29 46 43 38 41 40 42 44 29 28 26 22 20 16-Speed Gearhead Lathe For Machines Mfg.
C 111 109 107 29 89 90 A 92 107 110 88 91 107 105 83 77 82 57 103 104 86 85 107 106 108 87 29 102 81 84 B 29 74 99 77 82 73 98 74 78 72 73 A 97 71 70 94 97 C 69 67 95 C 59 65 96 C 66 93 B A 59 68 70A B 64 59 76 60 63 62 61 59 61 62A 58 B 57 56 55 PARTS 100 101 80 79 75 For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
16-Speed Gearhead Lathe PARTS For Machines Mfg.
206 211 212 213 217 214 208 215 209 218 325 203 216 221 221 219 206 231 222 225 221 224 245 246 256 226 225 225 226 242 243 249 250 261 325 325 258 241 259 260 225 248 247 240 239 225 238 224 237 206 236 235 244 233 234 232 223 224 206 225 226 228 227 229 230 255 252 257 254 PARTS 325 211 210 206 207 201 202 204 205 203 220 206 251 253 325 For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
16-Speed Gearhead Lathe PARTS For Machines Mfg.
438 416 491 417 449 439 489 492 418 426 402 425 421 422 440 401 441 493 437 490 422 419 406 414 424 447 485 484 430 413 448 490 446 489 428 429 414 415 486 411 428 410 431 488 412 487 432 PARTS 445 444 427 423 409 435 420 408 407 486 434 414 442 405 402 404 403 For Machines Mfg.
494 -110- 468 496 450 472 458 422 461 473 482 481 475 474 480 453 476 454 463 477 479 478 462 497 491 455 456 466 465 465 PARTS 497 496 473 459 495 470 467 414 469 483 434 451 452 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
16-Speed Gearhead Lathe PARTS For Machines Mfg.
621 639 641 643 645 642 636 632 631 634 633 635 630 602 629 620 624 623 630 625 616 628 623 615 606 627 613 618 626 609 612 610 611 614 616 617 619 621 607 622 606 608 619-2 619-3 619-1 601 602 603 603 602 604 619-5 619-4 605 PARTS 637 638 640 646 644 602 For Machines Mfg.
16-Speed Gearhead Lathe PARTS For Machines Mfg.
PARTS For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
924 923 962 964 963 961 966 966 962 965 962 960 949 922 919 917 918 938 948 948 932 931 934 918 916 912 914 910 913 915 921 940 967 907 967 904 941 942 906 905 928 956 927 908 951 952 929 944 943 945 909 911 957 920 956 946 928 956 947 911 930 937 901 903 902 939 PARTS 959 958 Model SB1055F Only 950 935 925 926 953 936 954 955 For Machines Mfg.
16-Speed Gearhead Lathe PARTS For Machines Mfg.
PARTS For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
For Machines Mfg.
PARTS 16-Speed Gearhead Lathe Thread Dial For Machines Mfg.
PARTS For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg.
PARTS For Machines Mfg.
PARTS 16-Speed Gearhead Lathe For Machines Mfg. Since 3/11 Front Machine Labels ! WARNING! Never use spindle speeds faster than the chuck RPM rating or the safe limits of your workpiece.
For Machines Mfg. Since 3/11 PARTS 16-Speed Gearhead Lathe Rear & Side Machine Labels 1818 South Bend Lathe Co. Fluid Capacities: (SB1053, SB1054F, SB1055F) Component Capacity Type Headstock 7.5L Mobil DTE Light or ISO 32 equivalent Mobil Vactra 2 or ISO 68 equivalent Gearbox 1.3L Apron 1.1L Mobil Vactra 2 or ISO 68 equivalent Cutting Fluid 11.
WAR R ANT Y Warranty This quality product is warranted by South Bend Lathe Company to the original buyer for one year from the date of purchase. This warranty does not apply to consumable parts, or defects due to any kind of misuse, abuse, negligence, accidents, repairs, alterations or lack of maintenance. We do not reimburse for third party repairs.
Printed In U.S.A.
