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DC7221 sprag clutch BWC/BWX/X series Sprag freewheel one way clutch

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Changzhou Lisongtai Industrial Motion Technology Co.,LtD

City: changzhou

Province/State:jiangsu

Country/Region:china

Tel:86-519-68254183

Contact Person:
Ms.Sun View Contact Details

DC7221 sprag clutch BWC/BWX/X series Sprag freewheel one way clutch

Brand Name	LST
Model Number	DC7221,B,C
Certification	SGS
Place of Origin	Jiangsu,China
Minimum Order Quantity	10pcs
Price	USD15.00-20.00/pcs
Supply Ability	100000pcs/per month
Packaging Details	Industrial packing and commercial packing
Sprag Material	Gcr15
Model	DC7221,B,C
Application	,textile machine,elevator machine, Strap/belt tighteners • Bucket conveyors • Belt reversing locks
ID	72.21mm
OD	88.877mm
Height	13.5mm,21mm,25.4mm,26.7mm
Torqure capacity	1279N.M
Weight	0.14kg/pcs
Number of Sprag	30pcs
Cage material	ST 12

Detailed Product Description

China Bearing Factory Sprag Clutch DC One Way Bearing

Product Description

Data Sheet

Item	DC
Outer Diameter	38.885-142.88mm
Bore Size	22.225-123.881 mm
Norminal Torque	63-4785 Nm
Weight	0.03-0.4 kg
Sprags Quantity	12-44
Overrunning Speed(outer race)	750-4300 min-1
Overrunning Speed (inner race)	1500-8600 min-1
Precision Rate	P6
Port	Shanghai;Ningbo
Delivery Time	7-10 days

Feature

Type DC is a sprag type freewheel cage without inner or outer races. It must be installed in a design providing races, bearing support for axial and radial loads, lubrication and sealing.

The DC type version-N accepts all types of lubricants currently used in the power transmis-sion equipement.

-Tolearance

The sprag space tolerance must not be exceeded. Inner and outer races must both have a minimum plain width "e", without any recess, to ensure the freewheel functions correctly as shown on following data sheet.

-Hardness
Surface hardness of the finished part should be HRC 60 to 62, for a depth of 0, 6 mm minimum.
Core hardness to be HRC35 to 45. Surface roughness not to exceed 22CLA.

Maximum taper between races: 0, 007 mm for 25 mm width.

Different Sizes for Your Reference

DC series

Type	Drag torque	Size(mm)						Number of clips
Type	Tkn(NM)	a	c	sprag space	e	d	b	Number of clips
DC2222G	50	22.225	38.885	8.33	10	50	17
DC2776	95	27.762	44.422	8.33	13.5	58	21
DC3034	99	30.34	47	8.33	13.5	62	23
DC3175(3C)	127	31.75	48.41	8.33	13.5	63	24	3
DC3809A	220	38.092	54.752	8.33	16	71	29
DC4127(3C)	179	41.275	57.935	8.33	13.5	75	32	3
DC4445A	290	44.45	61.11	8.33	16	79	34
DC4972(4C)	245	49.721	66.381	8.33	13.5	86	38	4
DC5476A	420	54.765	71.425	8.33	16	92	42
DC5476A(4C)	420	54.765	71.425	8.33	16	92	42	4
DC5476B(4C)	615	54.765	71.425	8.33	21	92	42	4
DC5476C(4C)	792	54.765	71.425	8.33	25.4	92	42	4
DC5776A	483	57.76	74.42	8.33	16	98	44
DC6334B	645	63.34	80	8.33	21	104	50
DC7221(5C)	540	72.217	88.877	8.33	13.5	115	56	5
DC7221B	1023	72.217	88.877	8.33	21	115	56
DC7221B(5C)	1023	72.217	88.877	8.33	21	115	56	5
DC7969C(5C)	1630	79.698	96.358	8.33	25.4	124	61	5
DC8334C	1645	83.34	100	8.33	25.4	132	65
DC8729A	1000	87.29	103.96	8.33	16	134	67
DC10323A(3C) *	1290	103.231 **	119.891	8.33	16	155	80	3
DC12334C *	3840	123.34 **	140	8.33	25.4	184	96
DC12388C(11C)	3900	123.881	142.88	9.5	25.4	196	96	11

Cage Freewheels BWX series
for assembly with inner and outer ring
with sprags

Features
Cage Freewheels BWX are sprag freewheels to be installed between customer-supplied inner
and outer rings. The freewheels BWX are used as:
Backstops
Overrunning Clutches
Indexing Freewheels
Nominal torques up to 4 900 Nm.

Freewheel Size	Type	Nominal t orque	J	D	B	K	Sprags Quantity	Drag strips	Brake clips	Design as ill.	Weight
		MN	+0,008	±0,013 mm	mm	mm		Quantity	Quantity		kg
		Nm	-0,005 mm
BWX133590A	Disengaging	63	22,225	38,887	10,0	44,0	12			109-2	0,03
BWX13143A	Engaging	120	27,767	44,425	13,5	51,0	14			109-2	0,06
BWX133392	Disengaging	280	38,092	54,750	16,0	71,0	18			109-3	0,09
BWX1310145	Disengaging	180	41,275	57,937	13,5	74,2	14		3	109-2	0,07
BWX132909A	Disengaging	360	44,450	61,112	16,0	78,5	20	2	3	109-2	0,10
BWX133339	Disengaging	310	49,721	66,383	13,5	85,0	22	2	4	109-2	0,09
BWX1310003	Disengaging	310	49,721	66,383	13,5	85,0	22		4	109-2	0,09
BWX137222	Engaging	570	49,721	66,383	19,0	85,0	22			109-2	0,12
BWX1310445	Disengaging	400	54,765	71,427	13,5	91,7	24			109-2	0,09
BWX1310172	Engaging	540	54,765	71,427	16,0	91,7	24			109-2	0,12
BWX1310226	Disengaging	520	54,765	71,427	16,0	91,7	24	2	4	109-2	0,12
BWX136709	Engaging	770	54,765	71,427	21,0	91,7	24	3	10	109-2	0,16
BWX1310147	Disengaging	1 000	54,765	71,427	25,4	91,7	24	3	8	109-2	0,20
BWX136324	Engaging	600	57,760	74,427	19,0	95,0	26			109-3	0,14
BWX1310080	Disengaging	670	72,217	88,882	13,5	115,0	30		4	109-2	0,12
BWX13168	Engaging	1 300	72,217	88,882	21,0	115,0	30			109-3	0,20
BWX134012	Engaging	1 300	72,217	88,882	21,0	115,0	30	4	10	109-3	0,20
BWX137322	Disengaging	2 000	79,6982	96,363	25,4	124,0	34	5	12	109-2	0,28
BWX138316	Disengaging	2 960	83,5972	102,596	25,4	131,6	34	5	12	109-2	0,30
BWX13261A1	Disengaging	1 600	103,2312	119,893	16,0	154,0	40	6	10	109-3	0,19
BWX13236	Disengaging	1 700	117,3912	136,391	16,0	175,3	30	5	6	109-3	0,25
BWX133403B	Engaging	4 900	123,8812	142,880	25,4	188,0	44		11	109-2	0,46

Disengaging
When the outer ring is rotating the centrifugal force causes the sprags to lift off from the inner
race. This reduces wear during freewheeling operation.
Engaging
When the outer ring is rotating the centrifugal force presses the sprags against the inner ring.
This enhances the ability of the sprags to engage immediately when torque is applied.
Drag strips
To reduce wear during freewheeling operation between sprags and the inner race, drag strips
made from wear-resistant beryllium copper alloy are attached to the inner cage. This results in increased friction between inner cage and inner race. This counteracts individual sprag activation during freewheeling operation, thereby greatly reducing sprag pressure on the inner race.
Brake clips
Some freewheel sizes are available with brake clips fitted on the outer cage to prevent further
automatic rotation of the Cage Freewheel during rapid acceleration and deceleration of
Type DC BWC BWX is a sprag type freewheel cage without inner or outer races. It must be installed in a design providing races, bearing support for axial and radial loads, lubrication and sealing.

BW BWC X series sprag freewheel clutches

Type	Inside shaft Diameter		Outside Shaft Diameter		Maximum Width	Rated Drag Torque
Type	Di	Sprag Space	De	Sprag Space	B	N.M (kgf.m)
x-135006	54.572	+0.008-0.005	71.211	±0.013	20.5	799 (81.5)
BW-13231	54.765	-	71.427	-	13.5	402 (41.0)
BW-13214					15.9	363 (37.0)
BW-13167					15.9	569 (58.0)
BW-13209	57.760	-	74.427	-	13.5	554 (56.5)
BWC-13239B					15.9	711 (72.5)
BW-13238					21.0	1050 (107)
X-133401	59.538	-	76.200	-	25.4	1350 (138)
X-135402C	68.600	-	85.262	-	11.7	(56.5)
BW-13243	72.217	-	88.882	-	13.5	637 (65.0)
BWC-13168					21.0	1510 (154)
BWC-13229					21.6	1325 (135)
BW-13255					26.7	1920 (196)
X-133614C	83.596	±0.013	102.555	-	25.4	3040 (310)
X-133402	85.776	-	104.775	-	25.4	3090 (315)
BWC-13251	103.231	-	119.944	-	15.4	789 (80.5)
BWC-13261	103.231	-	119.944	-	15.4	1580 (161)
X-135705	137.000	-	156.000	-	21.0	(480)
BWC-13236	117.391	-	136.390	-	15.9	(204)
X-133639	103.231	-	122.230	-	25.4	4410 (450)
X-133403	123.881	-	142.880	-	25.4	5740 (585)

Details size:

Part Number	Dimensions (mm)
Part Number	Di	de	B min
X-133818T	20.345	37.008	10.00
X-134939	22.225	38.887	10.00
X-135052	31.881	48.548	13.50
X-135014	37.317	53.980	12.00
X-133399	37.317	53.980	15.90
X-135005	38.568	55.207	20.50
X-133400	40.485	57.150	22.30
X-1350567	41.275	57.937	17.40
X-135041	44.450	61.112	13.50
X-135349	47.325	63.987	13.50
X-135036	47.408	64.075	22.30
X-134398	49.720	66.383	19.10
X-135006	54.572	71.211	20.50
X-133401	59.538	76.200	25.40
X-133614C	83.596	102.555	25.40
X-133402	85.776	104.775	25.40
X-133639	103.231	122.230	25.40
X-133403	123.881	142.880	25.40
X-134935B	27.762	44.425	13.50
X-133399M	37.317	53.980	15.90
X-133400M	40.485	57.150	22.30
X-133401M	59.538	76.200	25.40
X-134908C	72.217	88.882	21.00
X-134944	72.217	88.882	21.00
X-134943	72.217	88.882	26.70
X-133614M	83.596	102.555	25.40
X-137032	83.596	102.555	25.40
X-133402M	85.776	104.775	25.40
X-134951	103.231	122.230	25.40
X-133639M	103.231	122.230	25.40
X-134954	121.530	140.530	30.00
X-133403M	123.881	142.880	25.40

Company Information

Changzhou RenBen Bearing Factory(Changzhou Global Bearing Factory)is a manufacturer specialized in Producing Various cam clutch, one way bearing, needle roller bearings,one way clutch, backstop clutch, overrunning clutch and other bearings with high technology.

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