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TransDrive RM Rigid Coupling

The RM rigid coupling consists of two cast iron taper lock halves, a male & female flange, fully machined.

TransDrive RM Rigid Coupling FF

RM Rigid couplings are used to rigidly connect two shafts. Rigid couplings are often used to facilitate ease-of-maintenance or simply to aid machine assembly. TaperFit bushes provide a secure fit on the driving and driven shafts, ensuring installation and removal is simple.

The RM rigid coupling consists of two cast iron taper lock halves, a male & female flange, fully machined. The male hubs are available with taper lock entry from the Hub side H or the Flange side F. The female hub is available only from the Flange side F. This allows two alternative coupling assemblies as drawn below. For vertical applications use FF assembly only.

We can sell you a variety of couplings that will do this job for shafts as low as 6mm and up to 300mm or larger on request.

Selection Procedure 

  1. Select a size of rigid coupling to fit the larger of the driving or driven shafts.
  2. For severe applications, select the next size up rigid coupling.

Note: HF or FF assemblies can be used on horizontal shafts, only FF assemblies are to be used on vertical shafts.

Ordering instructions

  • Couplings are supplied as complete assemblies in either HF or FF Configuration (e.g a RM25 configured as a HF is specified RM25HF).
  • Couplings require Bushes which must be ordered as separate items (specifying bush size and the required bores).
TransDrive Rigid RM Coupling Diagram
TransDrive Rigid RM Coupling Diagram.
DimensionsRM12RM16RM25RM30RM35RM40RM45RM50
TF Bush Size: F & H Flanges1210*1615*251730303535404045455050
Maximum Bore: F & H Flanges3242657590100110125
D – Outside Diameter118127178216248298330362
H – Hub Diameter8380123146178210230266
L – Assembled Length578397159185210235260
M – Gap77777777
N – Outer Length3543516575768692
W – Wrench Clearance (H Flange only)3838485467798692
Total Weight (kg)3.54.51123386488155
All values are in mm unless otherwise stated.

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