This .pdf document is bookmarked Operating Instructions and Parts Manual 3-Wheel Belt Grinder Models BGB-142/248/260-1/260-3 Model BGB-248 shown JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
12. A dust collection system is recommended. Operator shall also wear a dust mask at all times. 13. Additional precautions may be necessary for grinding materials which are flammable or have other hazardous properties. Always consult the manufacturer of such materials for instructions on grinding and handling. 1.0 IMPORTANT SAFETY INSTRUCTIONS WARNING – To reduce risk of injury: 1. 14. Make certain the switch is in the OFF position before connecting the machine to the power supply.
27. Use recommended accessories; accessories may be hazardous. improper 33. Don’t use in dangerous environment. Don’t use power tools in damp or wet location, or expose them to rain. Keep work area well lighted. 28. Maintain tools with care. Keep tools sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories. 34. Use proper extension cord. Make sure your extension cord is in good condition.
2.0 Table of contents Section Page 1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2 2.0 Table of contents ............................................................................................................................................ 4 3.0 About this manual .......................................................................................................................................... 5 4.
3.0 About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model BGBseries Benchtop Belt Grinder. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions as set forth in this document.
4.0 Specifications for BGB-series Belt Grinders Model number Stock number Motor and Electricals Motor type Horsepower Phase BGB-142 577100 Power cord BGB-260-1 577150 Totally enclosed fan cooled, induction 1 1-1/2 1 115/230V (prewired 115V) 3/4 Voltage Cycle Listed FLA (full load amps) Motor speed (RPM) Starting amps Running amps (no load) Start capacitor Run capacitor BGB-248 577125 12 / 6 14.6 / 7.
BGB-142 Dimensions (cont.) Overall dimensions (HxWxD) Shipping dimensions (HxWxD) Weights Net weight (approx.) Shipping weight (approx.) BGB-248 20-5/16 x 15-5/8 22-11/32 x 19 x x 20-17/3 in. 20-5/8 in. (516 x 397 x 521 (567 x 482 x 524 mm) mm) 24-13/16 x 22-7/16 x 24-13/32 in. (630 x 570 x 620 mm) 105 lb. (48 kg) 124 lb. (56 kg) 114 lb. (52 kg) 132 lb. (60 kg) BGB-260-1 BGB-260-3 26-11/16 x 21 x 23-3/32 in. (678 x 533 x 587 mm) 29-1/8 x 25-19/32 x 28-3/4 in. (740 x 650 x 730 mm) 137 lb.
6.1 GROUNDING INSTRUCTIONS Read and understand all assembly instructions before attempting assembly and setup. Failure to comply may cause serious injury. 1. All Grounded, Cord-connected Tools: In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug.
If the tool must be reconnected for use on a different type of electric circuit, the reconnection should be made by qualified service personnel; and after reconnection, the tool should comply with all local codes and ordinances. 3. Replace magnetic starter with 460V starter; see parts list to order. 4. Re-install junction box cover and motor shroud. 5. Test run the grinder.
Figure 7-1: Belt Grinder identification 7.3 Abrasive belt tension 7.0 Adjustments To de-tension abrasive belt, turn tension knob counterclockwise and pull knob to the right. Disconnect machine from power source before making adjustments. To tension, push knob to the left. The pawl will “click” as it engages each ratchet tooth. Do not overtension; tighten belt until it is just taut. A moderate tension will provide faster cutting and longer belt life, as well as better tracking. Refer to Figure 7-1. 7.
2. 3. Rotate tracking knob left or right as you turn tracking wheel with your other hand. Do this in small increments and allow time for belt to respond to changes. Clockwise knob rotation moves belt toward left, counterclockwise toward right. If belt refuses to track properly, increase belt tension and repeat above steps. 7.5 V-belt tension 1. Disconnect machine from power source. 2. Remove four button head screws and open motor shroud. 3.
9.5 V-belt replacement 10.0 Optional accessories Disconnect machine from power source. Follow steps in sect. 7.4 to access pulleys and belt. Slide motor forward to loosen belt and slip belt off pulleys. Install new belt and slide motor back to tension it. Secure all covers and screws. The following adaptor plates are available for mounting your grinder to the JDCS-505 JET Dust Collection Stand. Contact your dealer to order, or call JET at the phone number on the cover.
12.0 Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately. Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
12.1.2 Motor and Base Assembly – Parts List – Model BGB-142 Index No Part No Description Size Qty 1 ................ BGB248-101 ............. Switch Box ............................................................... ...................................... 1 2 ................ 6295815 .................... Phillips Round Hd Tapping Screw ........................... M3 x 10L ....................... 8 3 ................ BGB248-103 ............. Strain Relief .................................................
12.1.3 Motor and Base Assembly – Parts List – Model BGB-248 Index No Part No Description Size Qty 1 ................ BGB248-101 ............. Switch Box ............................................................... ...................................... 1 2 ................ 6295815 .................... Phillips Round Hd Tapping Screw ........................... M3 x 10L ....................... 8 3 ................ BGB248-103 ............. Strain Relief .................................................
12.1.4 Motor and Base Assembly – Parts List – Model BGB-260-1 Index No Part No Description Size Qty 1 ................ BGB248-101 ............. Switch Box ............................................................... ...................................... 1 2 ................ 6295815 .................... Phillips Round Hd Tapping Screw ........................... M3 x 10L ....................... 8 3 ................ BGB248-103 ............. Strain Relief ...............................................
12.2.
12.2.2 Motor and Base Assembly – Parts List – Model BGB-260-3 Index No Part No Description Size Qty 1 ................ BGB260-3-101 .......... Switch Box ............................................................... ...................................... 1 2 ................ 6295815 .................... Phillips Round Hd Tapping Screw ........................... M3 x 10L ....................... 8 3 ................ BGB248-103 ............. Strain Relief ................................................
12.3.
12.3.2 Belt and Housing Assembly – Parts List – Model BGB-142 Index No Part No Description Size Qty 1 ................ BGB248-201 ............. Compression Spring ................................................ ...................................... 1 2 ................ TS-1502031 .............. Socket Head Cap Screw ......................................... M5-0.8P x 12L ............. 2 3 ................ BGB248-203 ............. Supporting Plate ......................................................
Index No Part No Description Size Qty 61 .............. BGB248-261 ............. Knob ........................................................................ ...................................... 1 62 .............. F010391 .................... Socket Head Set Screw ........................................... M5 x 0.8P x 5L ............. 1 63 .............. BGB248-263 ............. Hub Supporting Shaft .............................................. ...................................... 1 64 .........
12.4.
12.4.2 Belt and Housing Assembly – Parts List – Model BGB-248 Index No Part No Description Size Qty 1 ................ BGB248-201 ............. Compression Spring ................................................ ...................................... 1 2 ................ TS-1502031 .............. Socket Head Cap Screw ......................................... M5 x 0.8P x 12L ........... 2 3 ................ BGB248-203 ............. Supporting Plate ......................................................
Index No Part No Description Size Qty 61 .............. BGB248-261 ............. Knob ........................................................................ ...................................... 1 62 .............. F010391 .................... Socket Head Set Screw ........................................... M5 x 0.8P x 5L ............. 1 63 .............. BGB248-263 ............. Hub Supporting Shaft .............................................. ...................................... 1 64 .........
12.4.3 Belt and Housing Assembly – Parts List – Model BGB-260-1 Index No Part No Description Size Qty 1 ................ BGB248-201 ............. Compression Spring ................................................ ...................................... 1 2 ................ TS-1502031 .............. Socket Head Cap Screw ......................................... M5 x 0.8P x 12L ........... 2 3 ................ BGB248-203 ............. Supporting Plate .....................................................
Index No Part No Description Size Qty 61 .............. BGB248-261 ............. Knob ........................................................................ ...................................... 1 62 .............. F010391 .................... Socket Head Set Screw ........................................... M5 x 0.8P x 5L ............. 1 63 .............. BGB248-263 ............. Hub Supporting Shaft .............................................. ...................................... 1 64 .........
12.4.4 Belt and Housing Assembly – Parts List – Model BGB-260-3 Index No Part No Description Size Qty 1 ................ BGB248-201 ............. Compression Spring ................................................ ...................................... 1 2 ................ TS-1502031 .............. Socket Head Cap Screw ......................................... M5 x 0.8P x 12L ........... 2 3 ................ BGB248-203 ............. Supporting Plate .....................................................
Index No Part No Description Size Qty 61 .............. BGB248-261 ............. Knob ........................................................................ ...................................... 1 62 .............. F010391 .................... Socket Head Set Screw ........................................... M5 x 0.8P x 5L ............. 1 63 .............. BGB248-263 ............. Hub Supporting Shaft .............................................. ...................................... 1 64 .........
12.5.1 Adaptor Plate (OPTIONAL) – Exploded View – Model BGB-142/248 12.5.2 Adaptor Plate (OPTIONAL) – Parts List – Model BGB-142/248 Index No Part No Description Size Qty .................. 414832 ...................... Adaptor Plate Kit, BGB-142/248 (#1 thru 5) ............ ........................................ 1 ................ TS-149105 ................ Hex Cap Screw ........................................................ M10 x 1.5P x 35L ......... 4 2 ................ TS-2361101 ..............
12.6.1 Adaptor Plate (OPTIONAL) – Exploded View – Model BGB-260-1/260-3 12.6.2 Adaptor Plate (OPTIONAL) – Parts List – Model BGB-260-1/260-3 Index No Part No Description Size Qty .................. 414833 ...................... Adaptor Plate Kit, BGB-260-1/260-3 (#1 thru 5) ...... ........................................ 1 ................ TS-149105 ................ Hex Cap Screw ........................................................ M10 x 1.5P x 35L ......... 4 2 ................ TS-2361101 ........
13.0 Electrical Connections 13.
13.
Power Light Running Light E-Stop ON Switch 33 8 2 7 1 BK WH RD 5 4 BK RD WH BK 3 9 6 RD WH,1 BK GN BK,1 Control Panel BK 2 T1 T2 4 T2 T3 L3 5 4 6 L2 3 WH 14 13 A2 6 T3 BK WH RD T1 2 L1 1 A1 RD Motor, 3Ph, 230V WH,1 WH BK BK,1 RD Magnetic Switch 3Ph, 230V GN GN PE GN: Green BK: Black RD: Red GY: Grey YE: Yellow Color Symbol: Terminal Box 13.
Power Light Running Light E-Stop ON Switch 34 8 2 7 1 BK WH RD 5 4 BK RD WH BK 3 9 6 RD WH,1 BK GN BK,1 Control Panel BK 2 T1 T2 4 T2 T3 L3 5 4 6 L2 3 WH 13 A2 6 T3 14 BK WH RD T1 2 L1 1 A1 RD Motor, 3Ph, 460V WH,1 WH BK BK,1 RD Magnetic Switch 3Ph, 460V GN GN PE GN: Green BK: Black RD: Red GY: Grey YE: Yellow Color Symbol: Terminal Box 13.
14.0 Warranty and service JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product.
427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
