Changzhou Suma Precision Machinery Co., Ltd
| Type | sprag |
| Precision Rating | P0 |
| Seals Type | non-sealed |
| Height | 13.5 mm |
| Drag Torque | 540 N.m |
| Race Material | GCr15 |
| Overrunning Speed | 2600 min-1 |
| Inner Diameter | 72.217 mm |
| Outer Diameter | 88.877 mm |
| Sprag Space | 8.33 mm |
| Minimum Width | 13.5 mm |
| Minimum Shaft Diameter | 115 mm |
| Maximum Housing Diameter | 56 mm |
| Number of Clips | 5 |
| Number of Sprags | 30 |
| Weight | 0.210 kg |
| Brand Name | SUMA or OEM |
| Model Number | DC7221(5C) |
| Place of Origin | Jiangsu, China |
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Product Specification
| Type | sprag | Precision Rating | P0 |
| Seals Type | non-sealed | Height | 13.5 mm |
| Drag Torque | 540 N.m | Race Material | GCr15 |
| Overrunning Speed | 2600 min-1 | Inner Diameter | 72.217 mm |
| Outer Diameter | 88.877 mm | Sprag Space | 8.33 mm |
| Minimum Width | 13.5 mm | Minimum Shaft Diameter | 115 mm |
| Maximum Housing Diameter | 56 mm | Number of Clips | 5 |
| Number of Sprags | 30 | Weight | 0.210 kg |
| Brand Name | SUMA or OEM | Model Number | DC7221(5C) |
| Place of Origin | Jiangsu, China | ||
| High Light | DC7221B sprag clutch bearing ，one way clutch bearing DC7221 ，5C sprag type clutch bearing | ||
DC 7221(5C) One Way Clutch Bearing with sprag type
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.
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 pages.
Alternatively, races can be made in case hardened steel shafts, or housings, to the specification below. 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.
| Size | Torque | Overrunning speeds | Øa + 0,008 - 0,005 | Øc ± 0,013
| Sprag space | emin | Ødmin | Øbmax | Number of clips | Number of sprags | Weight | |
|
| TKN1[Nm] | nimax2 [min-1] | Namax2 [min-1] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [kg] | ||
| DC2222G | 63 | 8600 | 4300 | 22.225 | 38.885 | 8.33 | 10.0 | 50 | 15 | - | 12 | 0.030 |
| DC2776 | 119 | 6900 | 3400 | 27.762 | 44.422 | 8.33 | 13.5 | 58 | 18 | - | 14 | 0.055 |
| DC3034 | 124 | 6300 | 3100 | 30.340 | 47.000 | 8.33 | 13.5 | 62 | 20 | - | 14 | 0.060 |
| DC3175(3C) | 159 | 6000 | 3000 | 31.750 | 48.410 | 8.33 | 13.5 | 63 | 24 | 3 | 16 | 0.060 |
| DC3809A | 275 | 5000 | 2500 | 38.092 | 54.752 | 8.33 | 16 | 71 | 29 | - | 18 | 0.085 |
| DC4127(3C) | 224 | 4600 | 2300 | 41.275 | 57.935 | 8.33 | 13.5 | 75 | 32 | 3 | 18 | 0.090 |
| DC4445A | 363 | 4300 | 2100 | 44.450 | 61.11 | 8.33 | 16 | 79 | 34 | - | 20 | 0.095 |
| DC4972(4C) | 306 | 3800 | 1900 | 49.721 | 66.381 | 8.33 | 13.5 | 86 | 38 | 4 | 22 | 0.100 |
| DC5476A | 525 | 3500 | 1700 | 54.765 | 71.425 | 8.33 | 16 | 92 | 42 | - | 24 | 0.110 |
| DC5476A(4C) | 525 | 3500 | 1700 | 54.765 | 71.425 | 8.33 | 16 | 92 | 42 | 4 | 24 | 0.130 |
| DC5476B(4C) | 769 | 3500 | 1700 | 54.765 | 71.425 | 8.33 | 21 | 92 | 42 | 4 | 24 | 0.180 |
| DC5476C(4C) | 990 | 3500 | 1700 | 54.765 | 71.425 | 8.33 | 25.4 | 92 | 42 | 4 | 24 | 0.200 |
| DC5776A | 604 | 3300 | 1600 | 57.760 | 74.420 | 8.33 | 16 | 98 | 44 | - | 26 | 0.110 |
| DC6334B | 806 | 3000 | 1500 | 63.340 | 80.000 | 8.33 | 21 | 104 | 50 | - | 26 | 0.175 |
| DC7221(5C) | 675 | 2600 | 1300 | 72.217 | 88.877 | 8.33 | 13.5 | 115 | 56 | 5 | 30 | 0.140 |
| DC7221B | 1279 | 2600 | 1300 | 72.217 | 88.877 | 8.33 | 21 | 115 | 56 | - | 30 | 0.185 |
| DC7221B(5C) | 1279 | 2600 | 1300 | 72.217 | 88.877 | 8.33 | 21 | 115 | 56 | 5 | 30 | 0.210 |
| DC7969C(5C) | 2038 | 2400 | 1200 | 79.698 | 96.358 | 8.33 | 25.4 | 124 | 61 | 5 | 34 | 0.280 |
| DC8334C | 2055 | 2300 | 1100 | 83.340 | 100.00 | 8.33 | 25.4 | 132 | 65 | - | 34 | 0.270 |
| DC8729A | 1250 | 2200 | 1100 | 87.290 | 103.96 | 8.33 | 16 | 134 | 67 | - | 34 | 0.165 |
| DC10323A(3C)* | 1612 | 1800 | 900 | 103.231** | 119.891 | 8.33 | 16 | 155 | 80 | 3 | 40 | 0.205 |
| DC12334C* | 4800 | 1500 | 750 | 123.34** | 140.00 | 8.33 | 25.4 | 184 | 96 | - | 50 | 0.400 |
| DC12388C(11C) | 4875 | 1500 | 750 | 123.881 | 142.88 | 9.5 | 25.4 | 196 | 96 | 11 | 44 | 0.400 |
Q: How do you pack the goods?
Each in small white box or Roll Pack or Tube pack - in 19x18x9CM carton box - 29*28*19CM carton box - Wooden box / Wooden pallet
Q: Can i get the samples from you?
A: It is highly encouraged to ask for the samples for quality check.
Q: Can you promise to deliver the goods in time?
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2005
Total Annual:
1000000-2000000
Employee Number:
50~51
Ecer Certification：
Verified Supplier
Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales . The main Catagories are : One Way Cl... Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales . The main Catagories are : One Way Cl...
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