Mach III Clutch 118SI & 118SI-ULOW - Manual (Page 3)

7/10/2013 CLUTCH_SENSIFLEX_SI_MANUAL Page 3 of 5
B. AIR LINE CONNECTION
Air supply should be both filtered and regulated. Contamination in the air supply will
cause damage to the clutch, particularly to the diaphragm actuator. Connect a flexible
airline to the air inlet using a thread sealing compound. Do not use rigid piping.
C. ANTI-ROTATION (REACTION) ARM CONNECTION
Install a reaction arm (bolt, rod, or other device) into hole provided. This is necessary
to prevent rotation of the air cylinder (due to the drag in the bearings) and to keep
pressure off of the air inlet. This arm should not be held rigidly.
Please refer to Mach III’s Anti-Rotation (Reaction) Arm Installation Instructions
document for illustrations of proper mounting. This document is available from the
Mach III website:
http://www.machiii.com/pdf/ReactionArmInstallation.pdf or by
calling Mach III to have a copy sent by email or fax.
D. FINAL INSPECTION & TESTING
Check alignment of the sprocket or pulley. Cycle the clutch with the machine off to
check for air leaks and to ensure proper engagement and release. After a short run,
check set screws and alignment.
II. Operation:
The SensiFlex® clutch is designed for use in slip applications, typically to maintain tension on a
web during rewinding or a similar tension control application.
III. Routine Maintenance:
Friction linings (discs) are a “wear” item and in a constant slip application, periodic
replacement of the friction disc will be necessary. The frequency of disc replacement varies
with each application. Screws are used to mount the friction disc on the drive disc. Wear of
the friction disc should be monitored so that it can be replaced prior to the point at which the
heads of the mounting screws would make contact with the input sleeve. See chart below for
replacement point recommendations. Mach III Clutch, Inc. should always be consulted to assist
with selection of a SensiFlex® Clutch to assure that required tension can be maintained while
dissipating the heat caused by constant slip.
Friction Disc Replacement Recommendations
Product Original Thickness
of Friction Disc
Replace When Worn To A
Thickness Of:
38SI/38SI-ULOW 3/16 Inch 9/64 Inch
58SI/58SI-ULOW 1/4 Inch 1/8 Inch
78SI/78SI-ULOW 5/16 Inch 3/16 Inch
98SI/98SI-ULOW 7/16 Inch 5/16 Inch
118SI/118SI-ULOW 7/16 Inch 5/16 Inch