21304 Spherical Roller Bearings

21304 Spherical Roller Bearings

1.Abstract:
Spherical roller bearings use rollers that are thicker in the middle and thinner at the ends; the race is shaped to match. Spherical roller bearings can thus adjust to support misaligned loads. However, spherical rollers are difficult to produce and thus expensive, and the bearings have higher friction than a comparable ball bearing since different parts of the spherical rollers run at different speeds on the rounded race and thus there are opposing forces along the bearing/race contact.

2.product details:
Structure: Spherical 
Type: Roller 
Brand Name: ASK, FAG, HRB, NSK, NTN, SKF, HTZC 
Bore Size: 17 mm 
Outside Diameter: 52 mm 
Model Number: 21304 
Precision Rating: ABEC-1,ABEC-3 
Seals Type: OPEN 
Number of Row: other 
Place of Origin: Shandong China (Mainland)
Shield/Sealing: OPEN,Z,ZZ,2RS 
Material: chrome steel carbon steel
Quality standard: ISO90001:2000 
Cage: steel brass nylon 
Packing details: Industrial packing or as reque... 
Vibration: Z1V1,Z2V2,Z3V3 

3.Common Options:
E-- Extra Capacity style
J-- Steel cage
M-- Machined brass cage
K-- 1:12 Tapered Bore
C2-- tight internal clearance
C0-- Normal Clearance
C3-- Greater than normal Clearance
T41A-- Shaker Screen Style

4.features:
1) Good quality, reasonable prices
2) Wide application and attractive appearance
3) Widely used in all kinds of machinery
4)The range of inner diameter size is below 2000mm

5.applications:
Motorcycles, Electric Bicycles, Electric Motors (Scooters), Electric Tools, Fans, Sports Apparatus, Washing Machines, Dust Collectors, Ventilators, Textile, Machines, Running Machines (Treadmills), Household Appliances, Water Pumps, Agricultural Machines, Precision Machineries, etc.

Shijiazhuang Jianhan Machinery Import and export Co., ltd. is located in Shijiazhuang City, Hebei Province. Our operation principle is "credit and quality centric".

Besides, we mainly manufacture deep groove ball bearings, self-aligning bearings, tapered roller bearings in metric or inch size, thrust ball bearings, auto bearings, non-standard bearings, spherical bearings with housing and other forged works of inner or outer rings.

Most importantly, we conduct our production strictly according to ISO9000 standard. Yet, under the good principles of high quality, and reasonable prices, our company is highly appreciated by all our customers both from domestic and overseas markets. Generally, our overseas markets mainly spread in Southeast Asia, Europe, America and the Middle East.

Additionally, for many years, we have been dedicated to satisfying our customers by high quality products and excellent service. We are sincerely looking forward to establishing business relationships with customers both at home and abroad, and we will make continuous efforts to raise our production level and improve our service in the further time, so we are sincerely hoping that you could get satisfaction from us!