Couplings

Couplings
REX ® THOMAS ® COUPLING APPLICATION GUIDE
Coupling Type
Typical Applications
Torque
Range*
(lb.-in.)
RPM*
Range
Max.*
Bore
(in.)
Page
Number
Max. Ang.
Misalignment
Per Disc Pack
SN
SF
Turbines, Pumps, Compressors, Test
Stands, Generators, Speed Increasers,
Fans (Cooling Tower, Mine Ventilating,
Forced and Induced Draft), Paper Mill
Drives, Line Shafts, Printing Machines,
Pumps. Available as a standard in
corrosion-resistant materials
Up Up
to to 10.12 26, 27 1 /3°
1,466,000 3,600
Vertical Drives such as Sewage Pumps,
Printing Machines, Marine Pumps.
Available as a standard in corrosionresistant
materials
Up Up
to to 10.12 26, 27 1 /3°
1,466,000 3,600
SV
ST
Accommodates angular misalignment
only. Three-bearing applications where
radial load is supported by the coupling,
such as single-bearing generators, V-belt
sheaves, etc.
Up Up
to to 8 28 1 /3°
200,000 2,500
BMR Single
SN Single
THP
Accommodates angular misalignment
only. May be used with solid intermediate
shafts for applications listed for BMR. Not
intended as a radial-load-supporting
coupling
Accommodates angular misalignment
only. May be used with intermediate solid
shaft for applications similar to BMR, but
with high speed capacity. Available in
corrosion-resistant materials
Turbines, Pumps, Compressors, Speed
Increasers, Test Stands
Up Up
to to 9.25 29 1 /3°
1,040,000 2,500
Up Up
to to 8 30 1 /3°
838,800 7,100
Up Up
to to 5 31 1 /4°, 1 /3°
579,000 28,500
Series 63
Turbines, Pumps, Compressors, Test
Stands, Generators, Speed Increasers
Up Up
to to 8.84 32, 33 1
/4°
1,150,000 36,000
Miniature Couplings
Tachometers, Encoders, Switches, Ball
Screws, Test Stands, Pumps,
Compressors, Centrifuges, Theodolites,
Sonar, Radar, Scales, Carburetors
Up Up
to to 1.25 34 - 36 1 /2° - 2 °
700 150,000
Adjustable Length SN
Same applications as SN but where axial
and/or angular adjustment is desired.
Many sizes in stock for emergency break
down replacement
Up Up
to to 3.12 39 1 /3°
22,200 1,800
* These ratings are for cataloged coupling sizes. For special requirements, consult Rexnord Industries, Inc.
Note: Dimensions subject to change. Certified dimensions of ordered material furnished on request. 5