DWR Bearing Co., Ltd
| Payment Terms | T/T, Western Union, MoneyGram |
| Supply Ability | 10000pcs/month |
| Packaging Details | NEUTRAL PACKAGE |
| Type | Angular Contact Ball Bearing |
| Material | Bearing steel |
| Clearance | C0,C2,C3,C4 |
| Precision Rating | P6 |
| Brand Name | NTN |
| Model Number | QJ311 |
| Certification | ISO9001:2008 |
| Place of Origin | Japan |
View Detail Information
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Product Specification
| Payment Terms | T/T, Western Union, MoneyGram | Supply Ability | 10000pcs/month |
| Packaging Details | NEUTRAL PACKAGE | Type | Angular Contact Ball Bearing |
| Material | Bearing steel | Clearance | C0,C2,C3,C4 |
| Precision Rating | P6 | Brand Name | NTN |
| Model Number | QJ311 | Certification | ISO9001:2008 |
| Place of Origin | Japan | ||
| High Light | double row angular contact bearing ，sealed angular contact bearings | ||
High Precision Angular Contact NTN Ball Bearing QJ311 Series With Less Coefficient Friction
Detailed Product Description
Angular contact ball bearing can withstand radial load and axial load simultaneously, as well as the pure axle loads. They have higher limit speed. High precision and high speed bearings usually take 15 degrees contact Angle. The contact angle decide the capacity of axial load. Retainers are made of brass, synthetic resins or others subject to individual bearing features and application conditions.
Single-row angular contact ball bearings can accommodate axial load in one direction, if enduring radial load, it will raise additional axial force. And only limited axial displacement of the shaft or housing in one direction. The contact angle of angular contact ball bearings is 40, so you can afford a large axial load. Design of angular contact ball bearing is non-separable, shoulder height on both sides of the inners and outer rings are different. In order to increase the bearing load capacity, lower one side of the shoulder, so that the bearing can be mounted into more balls.
Pairs of angular contact ball bearings can accommodate radial loads as the principal combined radial and axial bi-directional load or under purely radial load. Tandem configuration can only take a single direction axial load, other configurations can be subjected to either direction of axial loads. This type of bearings are generally submitted by manufacturers combine matching users, pre-loading interference after installation, rings and balls of steel in the axial pre-load state, thus improving the supporting stiffness and running accuracy of bearing the whole group as a single.
Features of angular contact ball bearing:
(1) Angular contact ball bearings are particularly suitable for carrying combined (axial and radial) loads. Sometimes, they also can carry pure axial load and operate in higher speed. Under radial load, axial component force will be produced which must be counteracted. So the bearings are normally adjust against a second bearing.
(2) Single row angular contact ball bearings can carry axial load acting in one direction only. In many applications, angular contact ball bearings in pairs or muti-arrangement should be used. The axial load carrying capacity of angular contact ball bearings increase with the increase of contact angle.
(3) Angular contact ball bearings have raceways in the inner and outer rings that are displaced with respect to each other in the direction of the bearing axis. This means that they are designed to accommodate combined loads, i.e.simultaneously acting radial and axial loads.
The size includes
(0)2 series and (0)3 series
Product Show:
some of them are listed below
| Boundary dimensions(mm) | Basic load ratings(kN) | Limiting speeds(rpm) | Mass(Kg) | Bearing Number | |||||
| d | D | B | Cr | Cor | Grease | Oil | (Approx.) | HDBB | NTN |
| 40 | 80 | 18 | 40.5 | 37 | 6700 | 9000 | 0.391 | QJ 208 | QJ208 |
| 65 | 120 | 23 | 90 | 83 | 4300 | 5600 | 1.2 | QJ 213 | QJ213 |
| 120 | 215 | 40 | 280 | 275 | 2200 | 3200 | 6.49 | QJ 224 | QJ224 |
| 30 | 72 | 19 | 44.5 | 31.2 | 6700 | 9000 | 0.42 | QJ 306 | QJ306 |
| 55 | 120 | 29 | 115 | 86.5 | 4000 | 5300 | 1.48 | QJ 311 | QJ311 |
| 110 | 240 | 50 | 328 | 345 | 2000 | 3000 | 12.4 | QJ 322 | QJ322 |
Competitive Advantage
1. Quality level: reach the same level as the Japanese and European bearings
2. Less coefficient of friction
3. High limiting speed
4. Large size range
5. variations of structure
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1998
Total Annual:
1000000-2000000
Employee Number:
50~100
Ecer Certification：
Active Member
DWR Bearing Co., Ltd. was founded in 1998, after more than 10 years of development, nowadays has become into a group corporation with several subsidiaries. Our factory covers an area of 30, 000 square meters, construction area of 19, 000 squre meters, along with advanced production line and modern t... DWR Bearing Co., Ltd. was founded in 1998, after more than 10 years of development, nowadays has become into a group corporation with several subsidiaries. Our factory covers an area of 30, 000 square meters, construction area of 19, 000 squre meters, along with advanced production line and modern t...
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