Thomas (Rexnord) G1AMR312 AMR Standard Disc Coupling, size 312, rough bore. This torsionally rigid, all-metal, maintenance-free flexible disc coupling requires no lubrication and accommodates angular, parallel, and axial misalignment.

The Rexnord Thomas AMR coupling is ideal for heavy-duty, slow to medium speed applications, where high-starting torque, shock loads, torque reversals or continuous alternating torques are present. The open lug type center member provides ample clearance for assembly while minimizing the space required for coupling installations. The AMR coupling is available with a variety of coatings as well as compatible with a range of hub sizes. Typical applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers. AMR couplings are compatible with a range of hub sizes and available in 21 sizes ranging from 162 through 1550. The Thomas AMR Coupling is engineered to accomodate torque loads up to 3,124,000 lb-in and shaft diameters up to 16.0 inches.