Flexible Couplings

Flexible CouplingsMCS Couplings

This three-piece coupling adopts an aluminum alloy hub and a resin spider. The simple construction ensures that the high torque generated by a gear motor can be transmitted reliably. The proper elasticity of the spider suppresses motor vibration.

Selecting a Coupling

Select the Coupling Type below based on your Motor Item. When selecting a coupling please note the motor shaft diameter can be used for either D1 or D2 of the coupling. Once the motor shaft diameter is determined, the driven shaft diameter can be selected from the alternate value.

Geared Motor

Gear Ratio

Coupling Type

Motor Shaft Diameter

Nominal Torque

SMK0A-

3 ~ 50

MCS14

0.1969 in. 
(5 mm)

17.7 lb-in
(2 N•m)

60 ~ 120

MCS20

44 lb-in
(5 N•m)

Gearhead Model

Load Type

Coupling Type

Motor Shaft Diameter

Nominal Torque

2GN_SA

Uniform Load

MCL20

0.3125 in.
(7.937 mm)

44 lb-in
(5 N•m)

Shock Load

MCL30

110 lb-in
(12.5 N•m)

5GN_SA

Uniform Load

MCL30

0.5 in.
(12.7 mm)

110 lb-in
(12.5 N•m)

Shock Load

MCL40

220 lb-in
(25.0 N•m)