Mach III Clutch X6J2G-STH User Manual
Page 2
7/9/2013
CLUTCHBR_SHAFT_DBLSPKT_MANUAL
Page 2 of 4
I.
New Clutch-Brake Torque
New clutch or brake torque is approximately 40% less than rated design torque until the
friction and drive discs are worn in (lapped, burnished). The length of time for wear-in to
occur depends upon the application.
II.
Clutch-Brake Installation
A. SHAFT PREPARATION & MOUNTING
Mach III Clutch products are bored to fit a precision plug gauge for the specified bore size and
should slide fit the mating shaft. Make certain that the shaft is free of burrs or nicks. It may be
necessary to file or sand the shaft to assure a slide fit. Never hammer the clutch-brake onto
the shaft. Hammering on the clutch-brake may cause evident damage or subtle injury that will
shorten the wear life of the unit, and will void the warranty.
(1)
Apply the anti-seize (E-Z Break
®
)
lubricant from the packet provided, or equivalent, to
the shaft.
(2)
Insert key (customer supplied) onto the shaft.
(3)
Slide clutch-brake over key on the shaft, align the sprocket or pulley.
(4)
Tighten set screws to secure the clutch to the shaft.
B. AIR LINE CONNECTION
Refer to the dimensional spec sheet for NPT size to obtain correct fitting. Install fitting using a
thread sealing compound to prevent air leakage. Connect a flexible air line to the fitting. Do not
use rigid piping. Air supply should be both filtered and regulated. Contamination in the air
supply may damage the clutch-brake.
C. ANTI-ROTATION (REACTION) ARM CONNECTION
The air cylinder portion of a Mach III through shaft style clutch is designed to remain stationary.
Due to friction in the bearing housed in the air cylinder, this member will rotate unless an anti-
rotation arm (a.k.a. reaction arm) is installed. A threaded hole is provided in the cylinder for the
installation of this arm. 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:
or by calling Mach III to
have a copy sent by email or fax.
Note that in all cases, the machine frame or bracket should not be tight against the
housing of the clutch as contact may impede piston movement and will shorten bearing
life.
D. FINAL INSPECTION & TESTING
Check alignment of the sprockets. Cycle the clutch-brake 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.
III.
Clutch-Brake Operation
The maximum operating pressure should not exceed 80 PSI. Operation at pressures
greater than that required for proper function will decrease the life of the bearings.
Special Note Regarding Friction Disc Contamination:
The friction material used in this product will absorb oil, water, chemicals and other
contaminants. Depending on the type of contamination, clutch or brake may either seize
up entirely or lose torque capacity. If friction discs become contaminated, they should be
replaced. See repair kit ordering information below.
IV.
Routine Maintenance
When installed and operated according to the preceding guidelines, Mach III Clutch
products should require little or no routine maintenance. A repair kit is available which
contains all parts subject to typical wear: friction discs, springs and O-rings.