Selection according to torque

To calculate the dimensioning moment TD, please multiply your drive torque TA with the corresponding performance factor F and the expected load factor K.

Select the anticipated operating speed of your application combined with the desired service life in hour.

Example:
Anticipated operating speed : 1,000 rpm
Desired service life : 10,000 h

Performance factor F: 3

Load factor K
Uniform	Light shocks	Medium shocks	Heavy shocks
1,0	1,25	1,75	2,25

T_KN > T_D

Select a coupling whose rated torque T_KN is larger than the calculated dimensioning torque T_D

※ Make sure that the maximum torque of coupling T_{K max} is not exceeded.

Selection example (Application: Roller drive in automatic lamination machine)

Required conditions

Requested maximum radial offset △K_r : 40mm

Drive torque T_A : 50Nm

Operating speed : 200 rpm

Desired service life : 10,000 h

Expected load factor K : 1.25 (light shocks)

Selection

Performance factor F : 2

Dimensional torque T_D = 50Nm x 2 x 1.25 = 125 Nm

Select a coupling whose rated torque T_KN is larger than the calculated dimensioning torque 125 Nm

Appropriate size: SK 7.7.9/3 (TKN: 150 Nm / TKmax: 290 Nm)

Lubrication Period

The Schmidt-Kupplung, except for size SK 4.2.6/3, SK 4.2.8/5, SK 4.5.6/3 and SK 4.5.8/5, has a lubrication fitting for regreasing. Adequate lubrication is required for full operating life. The Schmidt-Kupplung, should be regreased exclusively with Klüber Staburags NBU 12-300 KP. Mixing lubrication is not recommended and will reduce coupling operating life.