Size: 4178


XTSR71 couplings replace the Series 71 and 71-8 with upgraded features that include modular disc packs, improved torque ratings, reduced weight and ease-of-assembly features. Designed for applications requiring a spacer-type coupling such as ANSI, API and other process pumps. They are most commonly applied on motor, turbine, and gear driven pumps, compressors and blowers. XTSR71 can retrofit Thomas Series 71, 71-8 and John Crane Metastream hubs. The simple 3-piece design, fast ‘drop-out’ center assembly, and dynamic balance characteristics compliment a disc design that allows for low flexing forces and high overload capacity.

4178 Specifications

Maximum Continuous Torque Rating: Up to
1130000 inch/lb
Distance Between Shaft Ends Range:
13.43000 to 36.00000 inches
Bore Capacity:
0.50000000 to 12.25000 inches
Maximum Operating Speed:
3900 rpm (balanced)