- Thrust Ball Bearings[2]
- Other Bearings[9]
- Needle Bearings[10]
- Auto Bearing[8]
- Other Universal Parts[4]
- Spherical Roller Bearings[3]
- Cylindrical Roller Bearings[4]
- Road Roller[1]
- Bearing Rollers[3]
- Other Auto Parts[1]
- Other Bearing Accessories[8]
- Taper Roller Bearings[1]
- Thrust Roller Bearings[1]
- Washers[1]
- Crank Mechanism[1]
- Contact Person : Mr. Zhang Michael
- Company Name : Changzhou Yunfan Bearing Co., Ltd.
- Tel : 0086-519-86528006
- Fax : 0086-519-86528005
- Address : Jiangsu,Changzhou,No.20,Longhui Rd.Wujin Hi-tech Industrial Zone
- Country/Region : China
- Zip : 213166
RNA4912 machined type needle roller bearing
Machined type needle roller bearing:
| Dimensions (metric) | F | 68 | Without Inner Race RNA |
| D | 85 | ||
| B | 25 | ||
| Approx.Wgt. lbs | .670 | ||
| Interchange | FAG | RNA 4912 | |
| FAG (Old No.) | RNU 4912 | ||
| INA | RNA 4912 | ||
| SKF | RNA 4912 | ||
| Torrington | RNA 4912 | ||
Machined type needle bearing without inner rings
Types of Designs:This kind of bearing has multiple structural styles for the choice of customers, such as narrow & broad series, with or without inner races, cages, ribs or sealings. It can be designed according to the special structural requirements of customers as well.Product Precision Accuracy:Dimensional tolerance and geometrical accuracy is based on GB/T5801.Mutual difference of needle roller diameter is 2μm, and the precision grade is G2 (ISO GB309).The diameter of inscribed circle conforms to tolerance grade F6 before the fitting of outer ring with cage and roller assembly.Bearing radial running clearance conforms to the value defined by 0 group of GB/T4604.Special precision grade is based on GB/T307.1For fuller information on the special requirements of bearing running clearance, inscribed circle and precision grade, please contact this company.Materials:Material for needle roller is GCr15 bearing steel, quench-hardening HRC60---65.Material for inner and outer races is GCr15 bearing steel, quench-hardening HRC61---65.Material for cages is quality low-carbon steel or reinforced nylon.Special Directions:Bearing running clearance and inner-cutting roundness should be regulated according to different conditions.Machine tools should be used for press-in fitting or thermal fitting of the bearingLimited by plastic cages (suffixed with TN) and sealing-element material, operating temperature is -300C---+1000C.For general-disposition design of bearings, refer to the relevant recommendation in the applied technology of rolling bearings.
RNA4912 machined type needle roller bearing
