How to Use This Manual
This manual provides detailed instructions on maintenance,
lubrication, installation, and parts identification. Use the table
of contents below to locate required information.
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Lube Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Limited End Float . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 1-2
Installation & Alignment Instructions. . . . . . . . . . . . Pages 2-4
Annual Maintenance, Relube & Disassembly . . . . . . . . Page 5
Installation & Alignment Data. . . . . . . . . . . . . . . . . . . Page 6
Parts Identification & Parts Interchangeability . . . . . . . . Page 7
CAREFULLY FOLLOW THE INSTRUCTIONS IN THIS
MANUAL FOR OPTIMUM PERFORMANCE AND TROUBLE
FREE SERVICE.
INTRODUCTION
This manual applies to Sizes 1020T thru 1140T and 20T thru
140T35 standard Falk SteelfIex Spacer Couplings. Unless
otherwise stated, information for Sizes 1020T thru 1140T applies
to Sizes 20T thru 140T respectively, e.g. 1020T = 20T, 1100T =
100T, etc. For couplings furnished with special features, refer to
assembly drawing furnished with coupling for proper assembly
arrangement and any additional installation or maintenance
requirements. The Spacer Assembly permits installation (or
removal, as shown on Page 5) without disturbing connected
equipment. These couplings are designed to operate in either the
horizontal or vertical position without modification. However, for
vertical applications, the cover match mark shown on Page 4 must
be up. Current couplings are supplied with one set of metric cover
fasteners. Older couplings may have inch cover fasteners.
The performance and life of the couplings depend largely upon
how you install and service them.
WARNING:
Consult applicable local and national safety
codes for proper guarding of rotating members. Lockout
starting switch of prime mover and remove all external loads from
drive before installing or servicing couplings. Observe all safety
rules when installing or servicing couplings.
WARNING:
Mixing grid coupling components from different
manufacturers may cause premature failure and personal or
property damage from flying debris.
LUBE FITTINGS
Cover halves have
1
/
8
NPT Iube holes. Use a standard grease
gun and Iube fitting as instructed on Page 5.
LIMITED END FLOAT
When electric motors, generators, and other machines are
fitted with sleeve or straight roller bearings, limited axial end
float kits are recommended for protecting the bearings. Falk
Steelflex couplings are easily modified to limit end float; refer
to Manual 428-820 for instructions.
LUBRICATION
Adequate lubrication is essential for satisfactory operation.
Because of its superior lubricating characteristics and low
centrifuge properties, Falk Long Term Grease (LTG) is highly
recommended. Sizes 1020T to 1090T35 are furnished with a
pre-measured amount of LTG grease for each coupling. The
grease can be ordered for larger size couplings.
The use of general purpose grease requires re-lubrication of
the coupling at least every six months. If coupling leaks
grease, is exposed to extreme temperatures, excessive
moisture, experiences frequent reversals or axial movements;
more frequent lubrication may be required.
Long Term Grease (LTG)
The high centrifugal forces encountered in couplings separate the
base oil and thickener of general purpose greases. Heavy
thickener, which has no lubrication qualities, accumulates in the
grid-groove area of Steelflex couplings resulting in premature hub
or grid failure unless periodic lubrication cycles are maintained.
Falk Long Term Grease (LTG) was developed specifically for
couplings. It resists separation of the oil and thickener. The
consistency of Falk LTG changes with operating conditions. As
manufactured, it is an NLG1 # ½ grade. Working of the
lubricant under actual service conditions causes it to become
semifluid while the grease near the seals will set to a heavier
grade, helping to prevent leakage.
LTG is highly resistant to separation, easily out performing all
other lubricants tested. The resistance to separation allows the
lubricant to be used for relatively long periods of time.
Steelflex couplings initially lubricated with LTG will not
require re-lubrication until the connected equipment is
stopped for servicing. If a coupling leaks grease, is exposed
to extreme temperatures, excessive moisture, or experiences
frequent reversals, more frequent lubrication may be required.
Although LTG grease is compatible with most other coupling
greases, the mixing of greases may dilute the benefits of LTG.
USDA Approval
LTG has the United States Department of Agriculture Food Safety
& Inspection Service approval for applications where there is no
possibility of contact with edible products. (H-2 ratings).
CAUTION:
Do not use LTG in bearings.
Specifications — Falk LTG
The values shown are typical and slight variations are
permissible.
AMBIENT TEMPERATURE RANGE — –20°F (–29°C) to
250°F (121°C). Min. Pump = 20°F (–7°C)
MINIMUM BASE OIL VISCOSITY — 3300SSU (715cST) @
100°F (38°C)
THICKENER — Lithium & soap/polymer.
Rexnord Industries, LLC, Coupling Group
428-312
5555 S. Moorland Rd., New Berlin, WI 53151-7953 USA Telephone : 262-796-4060
April 2005
Fax: 262-796-4064 e-mail: [email protected] web: www.rexnord.com
Supersedes 4-99
Falk™ Steelflex
®
Spacer Couplings
•
Installation & Maintenance
Type T35
•
Sizes 1020-1140 & 20-140
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