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

7/10/2013 CLUTCH_SENSIFLEX_FM_MANUAL Page 3 of 5
II. Operation
Torque is proportional to air pressure. SensiFlex® clutches are designed for use in slip
applications, typically to maintain tension on a web during rewinding or a similar tension control
application. 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.
III. Routine Maintenance
Friction 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.
Friction Disc Replacement Recommendations
Product
Original Thickness
of Friction Disc
Replace When Worn To A
Thickness of
38FM/38FM-ULOW 3/16 Inch 9/64 Inch
58FM/58FM-ULOW 1/4 Inch 1/8 Inch
78FM/78FM-ULOW 5/16 Inch 3/16 Inch
98FM/98FM-ULOW 7/16 Inch 5/16 Inch
Repair Parts & Services
Kits Available Contents Part Numbers
Facing Kit Friction Disc & Mounting Screws 38FM-FCGK, 38FM-ULOW-FCGK,
58FM-FCGK, Etc.
Repair Kit Friction Disc, Mounting Screws,
Spring(s), Diaphragm 38FM-RPRK, 38FM-ULOW-RPRK,
58FM-RPRK, Etc.
For parts not included in the kits, please contact Mach III Clutch, Inc. or your distributor.
Factory repair is also available. A return materials authorization (RMA) number must be
obtained prior to sending any unit in for repair. Mach III Clutch is not responsible for products
returned without authorization.