Falk
®
Rigid Moment Couplings
•
Installation & Maintenance
Type MCF
•
Size 1135
(Page 1 of 4)
Rexnord
CP3-006
5555 S. Moorland Rd., New Berlin, WI 53151-7953
February 2015
Telephone: 262-796-4060 Fax: 262-796-4064 www.rexnord.com
NEW
How to Use This Manual
This manual provides detailed instructions on installation,
removal, maintenance, and part descriptions. Use the table
of contents below to locate required information.
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 1 thru 3
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Part Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
CAREFULLY FOLLOW THE INSTRUCTIONS IN THIS
MANUAL FOR OPTIMUM PERFORMANCE AND
TROUBLE-FREE SERVICE.
Introduction
This manual applies to Type MCF rigid moment couplings,
size 1135. The couplings are designed to shaft mount
a gear drive to a shaft. The couplings will generally be
mounted horizontally but they can be mounted vertically
as well. MCF couplings are available with interference fit
hubs with key (Type 2), keyless interference fit hubs with
hydraulic removal (Type 6), or a combination of Type 2 and
Type 6 hubs. See Figure 1.
The performance and life of couplings depend largely
upon how you install and service them.
WARNING
: Consult applicable local and national safety
codes for proper guarding of rotating members. Observe
all safety rules when installing or servicing couplings.
WARNING
: Lockout starting switch of prime mover and
remove all external loads from drive before installing or
servicing couplings.
WARNING
: Do not service the coupling without
first completely reading installation, alignment, and
maintenance instructions. The compressive fit between
the shaft and hub provides both support for the drive
assembly and transmits the torque. Failure to achieve
correct fit between the shaft and hub, and between the two
hubs, can result in damage to the system components and
has the potential to cause serious injury to personnel in the
immediate vicinity.
WARNING
: Visual movement of the drive and assembly
is normal. The movement is due to shaft and coupling
connection runout. DO NOT restrain this movement; to do
so will adversely load the reducer low-speed shaft and the
connected shaft, and may result in shaft or hub failures.
Installation
1. Thoroughly clean, degrease, and dry coupling hub
flange mounting faces, drive and driven shafts. Clean
with a non-flammable solvent. See Figure 2.
2. Check both shafts for runout to ensure shafts are not
bent. Refer to Figure 4.
3. Shaft ends must be chamfered to provide a lead for hub
mounting.
4. Shafts and bores must be free of burrs. Any rust or
corrosion in the interference area must be removed
before assembly.
5. If a key seat is present in the driven shaft, the edges of the
key seat should be broken with a file and free of burrs.
6. Mount hubs on shafts.
a. Clean all parts. Heat hub to between 450°F (232°C)
and 500°F (260°C) using an oven, torch, or an
induction heater.
WARNING
: Do not use an oil bath to heat hub.
When an oxy-acetylene or blow torch is used, use an
excess acetylene mixture. Mark hub near the center
of its length in several places on hub body with
temperature-sensitive crayons, one 450°F (232°C)
and one 500°F (260°C) melt temperature. Direct
flame toward hub bore using constant motion to
avoid overheating an area.
b. Mount hub flush with face of shaft. Allow hub to cool
before proceeding. Refer to Figure 4.
PREVAILING
TORQUE
LOCKNUT
HEX SOCKET
PIPE PLUG
HEX HEAD
CAP SCREW
KEYLESS
FIT HUB
INTERFERENCE
FIT HUB WITH KEY
Figure 1 — TYPE 2 FEMALE HUB & TYPE 6 MALE HUB
IMPORTANT
CAREFULLY CLEAN
SHAFT & HUB BORE
& KEEP FREE OF
ANY GREASE
HUB
DEGREASE
FACE
Figure 2
