Mach III Clutch MBR2K-STH User Manual
Page 2
7/9/2013
CLUTCH_MECH_W_ADAPT_AIR_HD_MANUAL
Page 2 of 4
I.
New Clutch Torque
New clutch 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.
Installing Adapter
Great care must be exercised to assure proper alignment to prevent premature torque
limiter failure.
Please use the links on page one of this document to obtain the detail sheet for your unit.
This sheet will include the pilot diameter and other dimensions needed to machine the
component which will be mated to the adapter.
Provide a pilot for clearance (slide fit) for bore in adaptor and drill standard clearance
holes for the number and type of screws on the corresponding bolt circle in the mating
component. The screws used to attach the component to the adapter should not be any
longer than the sum of the depth of the threaded hole in the adapter plus the thickness of
the component. Otherwise, the screws may bottom out. Tighten all screws to uniform
torque based on screw size and use proper Loctite® (or equivalent) compound to assure
a permanent mount.
III.
Clutch 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 onto the
shaft. Hammering on the clutch 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 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.
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 adapter. 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.