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7/10/2013 BRAKES_SENSIFLEX_BK_MANUAL Page 1 of 5

Installation & Maintenance Instructions

SENSIFLEX® TENSION CONTROL BRAKES

Patent No. 6,578,691 B1

Catalog Products:

38BK & 38BK-ULOW

58BK & 58BK-ULOW

78BK & 78BK-ULOW

98BK & 98BK-ULOW

And non-catalog variations

of this brake design

Mach III Technical Support

Toll Free: 866-291-0849

International: 01-859-291-0849

Email:

engineering@machiii.com

www.machiii.com

Spec sheets and 3D models are available on the Mach III website:

http://www.machiii.com/Products/Tension-Control/Pneumatic-Brake/SensiFlex-Tension-Control-Brakes.asp

Please contact Mach III to obtain parts list drawings.

This product includes rotating equipment and should be guarded according to OSHA

requirements and other Federal, State and local regulations.

It is the responsibility of the user to provide necessary guarding.

CLICK on product numbers above

to obtain the product detail sheet

which includes dimensional data

helpful during installation.

Summary of content (5 pages)

PAGE 1
Installation & Maintenance Instructions SENSIFLEX® TENSION CONTROL BRAKES Patent No. 6,578,691 B1 Catalog Products: 38BK & 38BK-ULOW 58BK & 58BK-ULOW 78BK & 78BK-ULOW 98BK & 98BK-ULOW And non-catalog variations of this brake design CLICK on product numbers above to obtain the product detail sheet which includes dimensional data helpful during installation. Mach III Technical Support Toll Free: 866-291-0849 International: 01-859-291-0849 Email: engineering@machiii.com www.machiii.
PAGE 2
Reference Diagram: MOUNTING HOLES AIR INLET DRIVE DISC NYLON PT. SET SCREW NUT DRIVE HUB SPANNER HOLES FRICTION DISC CYLINDER PISTON **IMPORTANT** The gap between the friction and drive surface is factory set between 0.010 and 0.020 Inch. This is the ideal clearance for proper performance. Increasing this gap may result in air leaks and damage to the diaphragm actuator. Decreasing this gap prevents full disengagement of the brake. I. Installation A.
PAGE 3
Installation (Continued) B. AIR LINE CONNECTION Air supply should be both filtered and regulated. Contamination in the air supply will cause damage to the brake, particularly to the diaphragm actuator. Connect a flexible air line to the air inlet using a thread sealing compound. Do not use rigid piping. Cycle the brake with the machine off to assure engagement and release. II. Operation Torque (stopping force) is proportional to air pressure.
PAGE 4
IV. Repair Procedure Tools Needed Hex wrench set Spanner wrench Retainer (snap) ring pliers Flat head screw driver Scraper (if replacing bearings) 0.010 Inch feeler gauge Compounds Required Grease O-Ring lubricant Loctite® #609 Retaining Compound Anti-Seize Lubricant A. Friction Disc Replacement Loosen set screws and bolts from flange and slide the brake off of the shaft. Place brake in a horizontal position with the cylinder facing downward. Loosen nylon point set screw in retainer nut.
PAGE 5
Diaphragm Replacement (Continued) by applying pressure while gliding a finger along each perimeter of the diaphragm and then assure that the lips are fully seated by running your thumb across the surface of the diaphragm in a clockwise motion several times. 2. Bearing Inspection & Replacement Check bearing for external damage (missing seal, etc.). Make sure the bearing rotates freely and smoothly by hand. OD of bearing is press fit into the cylinder.