CSK One Way Sprag Type Freewheel Clutch from china factory-TIANNIU

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CSK One Way Sprag Type Freewheel Clutch

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CSK(CSK...2RS) One Way Sprag Type Freewheel Clutch

The CSK One Way Sprag Type Freewheel Clutch is a precision-engineered, integrated unit that functions as a reliable freewheel clutch. It employs a high-capacity sprag mechanism to ensure smooth and silent free rotation (overrunning) in one direction while delivering immediate and positive engagement for torque transmission in the reverse direction. This clutch is typically pre-lubricated and sealed, designed for direct shaft mounting. It is an excellent choice for demanding applications in printing presses, heavy-duty gearboxes, and industrial drives where consistent overrunning and reliable backstopping performance are essential.

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CSK(CSK...2RS) One Way Sprag Type Freewheel Clutch

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Product Detail

Fearures:

Type CSK is a sprag type freewheel integrated into a 62 series ball bearing (except sizes 8 and 40). It is bearing supported, delivered grease lubricated and protected against dust of more than 0,3 mm. The use of additional “nylos” type seals is recommended especially when the working temperature exceeds 50°C. Oil bath lubrication is also possible.
All the CSK versions are equipped with “formchromed” sprags. This process increases several times the overrunning life time. Torque transmission is ensured by a press fit assembly into a rigid outer housing with N6 tolerance, and onto a shaft with n6 tolerance. The initial bearing radial clearance is set at C5, and is reduced if using the press fit as specified.
Please contact us when either the ambient or the operating temperature is not within the range +5°C to +60°C. CSK..2RS is 5 mm wider but is equiped with lip seals to be water splash resistant.

Dimensions and Capacities:

Type	Size	Bearing series					Bearing loads		Weight	Drag torque
Type	Size	Bearing series					dynamic	static	Weight	Drag torque
CSK(KK)	d		TKN1)	N max	D	L	C	C0		TR
	[mm]		[Nm]	[min-1]	[mm]	[mm]	[kN]	[kN]	[kg]	[Ncm]
	8*	–	2.5	15000	22	9	3.28	0.86	0.015	0.5
	12	6201	9.3	10000	32	10	6.1	2.77	0.04	0.7
	15	6202	17	8400	35	11	7.4	3.42	0.06	0.9
	17	6203	30	7350	40	12	7.9	3.8	0.07	1.1
	20	6204	50	6000	47	14	9.4	4.46	0.11	1.3
	25	6205	85	5200	52	15	10.7	5.46	0.14	2
	30	6206	138	4200	62	16	11.7	6.45	0.21	4.4
	35	6207	175	3600	72	17	12.6	7.28	0.3	5.8
	40	–	325	3000	80	22	15.54	12.25	0.5	7
CSK..2RS	8**		2.5	15000	22	9	3.28	0.86	0.015	0.8
	12	–	9.3	10000	32	14	6.1	2.77	0.05	3
	15		17	8400	35	16	7.4	3.42	0.07	4
	17		30	7350	40	17	7.9	3.8	0.09	5.6
	20		50	6000	47	19	9.4	4.46	0.145	6
	25		85	5200	52	20	10.7	5.46	0.175	6
	30		138	4200	62	21	11.7	6.45	0.27	7.5
	35		175	3600	72	22	12.6	7.28	0.4	8.2
	40	–	325	3000	80	27	15.54	12.25	0.6	10

Note:

1) T max = 2 × T KN
*) One Z seal on the bearing side only. Looking from this side, the outer race runs free in the counterclockwise direction
**) Only one RS seal on the ball bearing side looking from this side, the outer race runs free in the counterclock-wise direction

Mounting example: