Original Japna NTN RNA4915 needle roller bearing without inner ring
Specification: Original Japna NTN RNA4915 needle roller bearing without inner ring
Brand: NTN/ INA/ SKF/ IKO/ OEM
Size: 85*105*30mm/ Metric
Dynamic load rating: 84.2KN
Static load rating: 170KN
Reference speed: 4800r/min
Limited speed: 5300r/min
Introduction of needle roller bearing
A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter. Like all bearings, they are used to reduce the friction of a rotating surface.
Feather of needle roller bearing
Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Application of needle roller bearing
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.
Our company also offer other bearings for you to choose!
1.Deep groove ball bearing: 6000 series, 6200series, 6300 series, 6400 series;
2.Taper roller bearing: 30000 series, 31000 series, 32000 series, 33000 series;
3.Cylindrical roller bearing: NU series, NUP series, NJ series, N series;
4.Spherical roller bearing: 20000 series, 21000 series, 22000 series, 23000 series;
5.Angular contact ball bearing: 7100 series, 7200 series, 7300 series, 7400 series;
6.Self-aligning ball bearing: 1200 series, 1300 series, 2200 series, 2300 series;
7.Thrust ball bearing: 51100 series, 51200 series, 51300 series, 51400 series;
8.Pillow block bearing: UC series, UCP series, UCF series, UCFL series.
Jinan Kaiming Bearing Co., Ltd. is a famous bearing manufacturer authorized agent and is one of the world famous branded bearing sellers. Our company was established in the year of 1992, we have rich experience and our products sell well throughout the world. We have good reputation in the international market by the perfect service and sufficient supply.
1) Our company insists on the “quality first, credit first” business ideas and our product specification is well-founded.
2) High-quality bearing, fast delivery time and best price is our best service. You will be satisfied.