Sprag Freewheels
2
3
4

Csk Bearings

Send Inquiry

Product Introduction

The wedge type unidirectional clutch consists of an outer ring, a figure-eight wedge, a holding spring, and an inner ring, which operate in a similar manner to the rollers in a roller type unidirectional clutch. As THE OUTER RING ROTATES COUNTERCLOCKWISE WITH RESPECT TO THE INNER RING IN THE DIAGRAM, THE WEDGE IS PUSHED TO TILT, ALLOWING SPACE BETWEEN THE INNER AND OUTER RINGS SO THAT THE CLUTCH WILL NOT LOCK. In other words, the WEDGE TYPE uniDIRECTIONAL CLUTCH shown in the FIGURE allows the outer ring to rotate counterclockwise with respect to the inner ring, or the inner ring to rotate clockwise with respect to the outer ring at all times.

However, if the outer ring tries to turn clockwise with respect to the inner ring, the wedge will not be able to move between the inner ring and the outer ring due to its geometry, thus locking the two together. This is to say, once the wedge is stuck inside and outside the ring, the unidirectional clutch appears locked, so that the outer ring can not rotate clockwise with respect to the inner ring, or the inner ring rotates counterclockwise with respect to the outer ring. In ORDER TO ENSURE THAT THE WEDGE CAN be reliably WEDged between the inner and outer rings, a HOLDING spring is FITTED in this UNIDIRECTIONAL CLUTCH SO THAT THE WEDGE can be locked in the direction of the two rings, always maintaining a little tilt.

Wedge type one-way clutch failure form and manufacturing materials, are the same as the roller type one-way clutch. Including seat and set out the inner race seat, outer and inner race seat radial distance between each other and coaxial set in relative rotation, multiple set between the outer circle and inner race of wedge, is used to transmit torque, the maintaining of wedge ring frame, as well as spring, the wedge between cage and the bearing in the mesh along one direction biasing wedge, its characteristic is that, The hold is provided with a cylindrical part, a window part with a radial extension, a wedge mounted in the window part for pivoting motion, and a spring is guided along an essentially circular direction by the outer circumferential surface of the cylindrical part.

TCL model is wedge type one-way clutch with bearing support and oil seal. It contains lubricating oil when leaving the factory. This model is mainly used for overrunning speed clutches. Please specify the rotation direction of the ring from direction A when ordering. The moment transmitted by the elastic overbearing coupling shall be less than the nominal moment of the elastic overbearing coupling. The drive device installed in the clutch shall not have obvious vibration when running. The clutch guard must be installed to ensure complete service.

DC TYPE is WEDGE REtainer unidirectional clutch without inner ring and outer ring. This model must be compatible with customer designed inner ring and outer ring, bearing support axial and radial load, and lubricating grease and oil seal.

The space tolerance of the contact surface of the irregular actuator must be within the range, the width of the contact surface between the outer ring and the inner ring must not be less than size "E", and the contact surface must not have any grooves to ensure normal function.

Standard strctural part		Bore diameter	Carrying capacity
Standard strctural part		Bore diameter	Carrying capacity
Model	Torque Nm	d	dynamic	static	B	D
		d	dynamic	static	B	D
		mm	C	C	mm	mm
		mm	N	N	mm	mm
ZZ8	2.5	8	3280	860	9	22
ZZ6201	9.3	12	6100	2770	10	32
ZZ6202L	13	15	6000	3700	11	35
ZZ6202M	26	15	6000	3700	11	35
ZZ6203L	17	17	7350	4550	12	40
ZZ6203M	34	17	7350	4500	12	40
ZZ6204L	32	20	10000	6300	14	47
ZZ6204M	65	20	10000	6300	14	47
ZZ6205L	40	25	11000	7000	15	52
ZZ6205M	80	25	11000	7000	15	52
ZZ6206M	110	30	15000	10000	16	62
ZZ6206S	170	30	15000	10000	16	62
ZZ6207	175	35	15600	7280	17	72
ZZ40	325	40	15540	12250	22	80
ZZ6206/25M	110	25*	15000	10000	16	62
ZZ6206/25	170	25*	15000	10000	16	62

Type	Size Bearing series Bearing loads								Weight	Friction Resistan
Type	Size Bearing series Bearing loads								Weight	Friction Resistan
CSK (kk)	d		TKN)1	nmax.	D	L	C	Co		TR
	(mm)		[Nm]	[min-1]	[mm]	[mm]	[kN]	[KN]	[kg]	[Ncm]
	8	-	2	15000	22	9	3.28	0.86	0.015	0.5
	12	6201	7.4	10000	32	10	6.1	2.77	0.04	0.7
	15	6202	13.5	8400	35	11	7.4	3.42	0.06	0.9
	17	6203	24.5	7350	40	12	7.9	3.8	0.07	1.1
	20	6204	40	6000	47	14	9.4	4.46	0.11	1.3
	25	6205	68	5200	52	15	10.7	5.46	0.14	2
	30	6206	110	4200	62	15	11.7	6.45	0.21	4.4
	35	6207	140	3600	72	17	12.6	7.28	0.3	5.8
CSK..2RS	40	-	260	3000	80	22	15.54	12.25	0.5	7
	8**		2	15000	22	9	3.28	0.86	0.015	0.8
	12	-	7.4	10000	32	14	6.1	2.77	0.5	3
	15		13.5	8400	35	16	7.4	3.42	0.07	4
	17		24.5	7350	40	17	7.9	3.8	0.09	5.6
	20		40	6000	47	19	9.4	4.46	0.145	6
	25		68	5200	52	20	10.7	5.46	0.175	6
	30		110	4200	62	21	11.7	6.45	0.27	7.5
	35		140	3600	72	22	12.6	7.28	0.4	8.2
	40·	-	260	3000	80	27	15.54	12.25	0.6	10

Type	Size	Overrunning speeds			Bearing series	Loads							Weight


						Rollers dyn.	Balls dyn.	Rollers stat.	Balls stat.


GFK	d	TKN1	nmax2)	nmax3)		C	C	Co	Co	D	L	r
	[mm]	[Nm]	[uiu]	[min']	5904	[N]	[N]	[N]	[N]	[mm]	[mm]	[mm]	[kg]
	20	41	5500	4000	5905	5600	4400	2900	2750	37	23	0.5	0.09
	25	52	5300	3800	5906	6300	5300	3450	3350	42	23	0.5	0.11
	30	62	5000	3500	5907	7700	5500	4600	3650	47	23	0.5	0.13
	35	106	4600	3200	5908	8200	8500	5200	5700	55	27	1	0.2
	40	148	4200	3000	5909	8650	8300	5750	5700	62	30	1	0.3
	45	220	3800	2500	5910	9200	9560	6350	7200	68	30	1	0.34
	50	240	3400	2200		9650	10000	6950	7800	72	30	1	0.36

Type	Size Number of boresxφ																CHIPSIIOIG UUN
	Size Number of boresxφ																CHIPSIIOIG UUN
	dH7 (mm)	LG (mm)	LH (mm)	LJ (mm)	Dj6 (mm)	T (mm)	Di0.008 0.005 (mm)	L (mm)	SAn6 (mm)	b1P10 (mm)	t (mm)	B8s6 (mm)	SCg6 (mm)	DL±0.1 (mm)		Da±0.013 (mm)	DC3809A
	dH7 (mm)	LG (mm)	LH (mm)	LJ (mm)	Dj6 (mm)	T (mm)	Di0.008 0.005 (mm)	L (mm)	SAn6 (mm)	b1P10 (mm)	t (mm)	B8s6 (mm)	SCg6 (mm)	DL±0.1 (mm)		Da±0.013 (mm)
DC230A								16	72	6	3.5					54752
DC230B								16				72				54752
DC230C								16					95	78	8x7	54752
DC230 G-10	10	16					38092
DC230 G-15	15	16					38092
DC230 G-20	20	16					38092
DC230H-10	10		33		35	17	38092
DC230H-15	15		33		35	17	38092
DC230H-20	20		33		35	17	38092							.
DC230J-10	10			50	35	17	38092
DC230J-15	15			50	35	17	38092
DC230J-20	20			50	35	17	38092
DC167A								16	90	10	5					71425	DC5476A DC5476A(4C)
DC167B								16				90				71425
DC167C								16					110	95	8x9	71425
DC167G-25	25	16					54765
DC167G-30	30	16					54765
DC167G-35	35	16					54765
DC167H-25	25		35		50	19	54765
DC167H-30	30		35		50	19	54765
DC167H-35	35		35		50	19	54765
DC167J-25	25			54	50	19	54765
DC167J-30	30			54	50	19	54765
DC167J-35	35			54	50	19	54765
DC168A								21	110	14	5.5					88877	DC7221(5C) DC7221B DC7221B(5C)
DC168B								21				110				88877
DC168C								21					140	120	8x11	88877
DC168G-40	40						72217
DC168G-45	45						72217
DC168G-50	50						72217
DC168H-40	40	21					72217
DC168H-45	45	21					72217
DC168H-50	50	21					72217
DC168J-40	40		42		65	21	72217
DC168J-45	45		42		65	21	72217
DC168J-50	50		42		65	21	72217
DC235A				63	65	21		16	150	20	7.5					119891	DC10323(3C)
DC235B				63	65	21		16				150				119891
DC235C				63	65	21		16					190	170	8x11	119891
DC235G-55	55	16					103231
DC235G-60	60	16					103213
DC235G-70	70	16					103213
DC235H-55	55		43		100	27	103213
DC235H-60	60		43		100	27	103213
DC235H-70	70		43		100	27	103213
DC235J-55	55			70	100	27	103213
DC235J-60	60			70	100	27	103213

Type	Size	Bearing series							Bearing series dyn. stat.		Weight	Friction Resistance


CSK..P2)	d		TKN)1	nmax.	D	L	b	t	C	Co		TR
	[mm]		[Nm]	[min1]	[mm]	[mm]	[mm]	[mm]	[kN]	[kN]	[kg]	[Ncm]
	15	6202	13.5	8400	35	11			7.4	3.42	0.06	0.9
	17	6203	24.5	7350	40	12			7.9	3.8	0.07	1.1
	20	6204	40	6000	47	14			9.4	4.46	0.14	1.3
	25	6205	68	5200	52	15			10.7	5.46	0.11	2
	30	6206	110	4200	62	16			11.7	6.45	0.21	4.4
	35	6207	140	3600	72	17			12.6	7.28	0.3	5.8
	40*	-	260	3000	80	22			15.54	12.25	0.5	7
CSK..PP2)	15	6202	13.5	8400	35	11	2	0.6	7.4	3.42	0.06	0.9
	17	6203	24.5	7350	40	12	2	1	7.9	3.8	0.07	1.1
	20	6204	40	6000	47	14	3	1.5	9.4	4.46	0.14	1.3
	25	6205	68	5200	52	15	6	2	10.7	5.46	0.11	2
	30	6206	110	4200	62	16	6	2	11.7	6.45	0.21	4.4
	35	6207	140	3600	72	17	8	2.5	12.6	7.28	0.3	5.8
	40	-	260	3000	80	22	10	3	15.54	12.25	0.5	7

Type	Sprag space							Number of clips	Number of sprags	Weight


	TKN1)	Φa+0.008 -0.005	ΦC±0013		emin	Φdmin	Φbmax
	INm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]			[kg]
DC2222G	50	22,225	38,885	8.33±0.075	10	50	17	-	12	0.03
DC2776	95	27,762	44,422	8.33±0.075	13.5	58	21	-	14	0.055
DC3034	99	30,340	47,000	8.33±0.075	13.5	62	23	-	14	0.06
DC3175(3C)	127	31,750	48,410	8.33±0.075	13.5	63	24	3	16	0.06
DC3809A	220	38,092	54,752	8.33±0.075	16	71	29	-	18	0.085
DC4127(3C)	179	41,275	57,935	8.33±0.075	13.5	75	32	3	18	0.09
DC4445A	290	44,450	61,110	8.33±0.075	16	79	34	-	20	0.095
DC4972(4C)	245	49,721	66,381	8.33±0.075	13.5	86	38	4	22	0.1
DC5476A	420	54,765	71,425	8.33±0.075	16	92	42	-	24	0.11
DC5476A(4C)	420	54,765	71,425	8.33±0.075	16	92	42	4	24	0.13
DC5476B(4C)	615	54,765	71,425	8.33±0.075	21	92	42	4	24	0.18
DC5476C(4C)	792	54,765	71,425	8.33±0.075	25.4	92	42	4	24	0.2
DC5776A	483	57,760	74,420	8.33±0.075	16	98	44	-	26	0.11
DC6334B	645	63,340	80,000	8.33±0.075	21	104	50	-	26	0.175
DC7221(5C)	540	72,217	88,877	8.33±0.075	13.5	115	56	5	30	0.145
DC7221B	1023	72,217	88,877	8.33±0.075	21	115	56	-	30	0.185
DC7221B(5C)	1023	72,217	88,877	8.33±0.075	21	115	56	5	30	0.21
DC7969C(5C)	1630	79,698	96,358	8.33±0.075	25.4	124	61	5	34	0.28
DC8334C	1645	83,340	100,000	8.33±0.075	25.4	132	65	-	34	0.27
DC8729A	1000	87,290	103,960	8.33±0.075	16	134	67	-	34	0.165
DC10323A(3C)*	1290	103,231**	119,891	8.33±0.075	16	155	80	3	40	0.205
DC12334C	3840	123,340**	140,000	8.33±0.075	25.4	184	96	-	50	0.4
DC12388C(11C)	3900	123,881	142,880	8.5±0.075	25.4	186	96	11	44	0.4

Why choose us?

Our commitment to quality and customer satisfaction is unwavering.
We are recognized and praised by our customers for our rich practical experience and deep theoretical foundation, reliable quality, reasonable price, and considerate after-sales service.
Our needle roller bearings are manufactured with exceptional precision and quality.
In addition, our company has strong technical force, complete management system, a professional research team, advanced production line, advanced production equipment, advanced management mode and modern information network system, and we can provide high-quality and low-cost Csk Bearings to all walks of life.
Our company is committed to providing exceptional customer service.
In the course of development, we gather strong spiritual power to boost the leap forward development of enterprises.
We offer a wide range of needle roller bearings to meet various applications.
Please really feel free to send us your requirements and we'll respond to you asap.
Our company has a wealth of expertise in designing and manufacturing needle roller bearings.
Our company has been adhering to the enterprise concept of 'developing with the society', grasping the business principle of 'science and technology first' and keeping pace with the times.

Drawn Cup Roller Clutches

Solid Collar Needle Roller Bearing