R+W: Safety Coupling ST2, Torque Limiters, Torque Limiter Couplings

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Torque Limiters SK

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Couplings BK

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Couplings EK

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SK Torque Limiters

MODEL SERIES ST / SK 0.1 - 160,000 NM|

Model ST2 technical information

Torque Limiter with integral elastomer jaw coupling for direct drives

Series from 1000 - 160.000 Nm

Data table Torque Limiter ST2

ST2 Series		10			25			60			160
Adjustment range		1-6	2-10	6-18	2-8	4-15	10-25	8-18	15-35	30-60	20-50	40-100	80-160
available from - to (KNm)		3xST 15	6xST 15	9xST 15	3xST 15	6xST 15	9xST 15	3xST 30	6xST 30	9xST 30	3xST 70	6xST 70	9xST 70
Overall length ± 2 (mm)	A₁	360			437			580			730
Length of torque limiting portion (mm)	A₂	183			230			320			410
Flange OD (ST portion) (mm)	B₁	270			318			459			648
Flange OD (elastomer portion) (mm)	B₂	290			330			432			553
Fit length/keyway length D1 (mm)	C₁	97			116			160			230
Fit length/keyway length D2 (mm)	C₂	120			155			220			290
Bore depth (torque limiting portion) (mm)	C₃	158			200			275			360
Bore diameter (elastomer portion) Ø – Ø F7 (mm)	D₁	40-105*			60-130*			80-160*			100-200*
Bore diameter (torque limiting portion) Ø – Ø F7 (mm)	D₂	40-110			60-140			80-200			100-290
Bore diameter (elastomer portion) Ø – Ø F7 (inch)	D₁	1.625"- 4.000"*			2.400"- 5.000"*			3.125"- 6.250"*			4.000"- 7.875"*
Bore diameter (torque limiting portion) Ø – Ø F7 (inch)	D₂	1.625"- 4.250"			2.400"- 5.500"			3.125"- 7.875"			4.000"- 11.375"
Length to cover (mm)	E₁	70			87			112			152
Length to (cover removed) (mm)	E₂	22			26			40			65
Hub diameter (mm)	F	160			200			255			300
Bore for fastening screw	G	max. 110			max. 140			max. 200			max. 290
Distance (mm)	L	45			83			96			136
Distance (mm)	M	95			130			165			225
Actuation path (mm)	N	4			4			7,5			10
Bolt circle diameter ST (mm)	O	220			270			376			532
Hub outside diameter (mm)	P	170			218			295			418
Moment of inertia (approx.) D max. (10¯³ kgm²)		854			1850			8960			36858
Speed max. (1/min.)		2700			2300			1800			1500
Approx. weight at D max. (kg)		80			115			287			729
axial (mm)		1,5			1,5			2			2,5
lateral (mm)		0,4			0,5			0,6			0,7
angular (Grad)		1			1			1			1
Dynamic torsional stiffness at TKN (Standard A Insert) (10³ Nm/rad)		145			230			580			1000

* larger bore diameters upon request.

Mounting example with sprocket and keyway connection

Order example for Torque Limiter St1 Order example for Torque Limiter ST2

Last update: 08.04.2010