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Product Details:
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| Sprag Material: | Gcr15 | Model: | DC7221,B,C |
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| 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 |
China Bearing Factory Sprag Clutch DC One Way Bearing
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 | |||||
| Tkn(NM) | a | c | sprag space | e | d | b | ||
| 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 | ||
| 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 |
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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 | 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: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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.
Contact Person: Ms. Sun
Tel: +8615895075912
Fax: 86-519-68254183
