With advanced production equipment, perfect quality management and the principle of abiding by the contract and reputation, our 4.056 Combined Roller Bearing Needle Bearings, Agricultural Machinery Square Hole Bearing, Slewing Bearing DCO34 Stainless Steel is fully trusted by our customers. We are sincere to all colleagues, mutual trust, positive communication, sincere cooperation, and jointly promote the development of the company. Now our company is further strengthening the staff technical training, improve the technical level, inject high technology into the products, and strive for better quality and more affordable products. Regardless of the size of our customers, no matter how many orders, no matter how complicated the craftsmanship is, we will always serve our customers with meticulousness and excellence, fully embody the spirit of customers as God, and join hands with new and old customers to create a better future! We continue to innovate and challenge ourselves to be a growing, profitable, globally operating and diversified company.
NA6917-ZW is a needle bearing
main size: 85mm*120mm*63mm, dynamic load: 188000N,
static load: 400000N, limit speed: 4600 1/min,
reference speed: 2850 1/min, weight: 2200kg, axial displacement : 1mm
Needle roller bearings NA6917-ZW, dimension series 69, features: radial load,
without seals, grease lubrication, oil lubrication, compact design
NA6917-ZW bearing application range
Paper Machinery Injection Molding Machine Motorcycle Vacuum Pump and Compressor Sander Polisher Centerless
Grinder Crankshaft Grinder Planer
Needle bearings are important components in mechanical equipment.
Its main function is to support the mechanical torsion body to reduce the mechanical load friction coefficient of the equipment in the transmission
process. According to different load deflection or nominal contact angle, needle roller bearings are divided into radial needle roller bearings and
thrust bearings. According to the variety of rotating elements, they are: ball bearings and rolling bearings. According to whether the needle roller
bearings can be aligned, they can be self-aligning bearings and non-aligning bearings (rigid needle roller bearings). 
According to the number of rows of the rotating body, it is respectively: single-row needle roller bearings, double-row needle roller bearings
and multi-row needle roller bearings. According to whether the parts can be peeled off, they can be divided into: clutchable pressure plate
and non-clutchable bearing. In addition, it is classified and managed according to the layout characteristics, styles and dimensions.
What are the classifications of needle roller bearings?
1) Centripetal needle roller and cage assembly
2) RNA, NKI type needle roller bearings
3) RNA and NK needle roller bearings without inner ring
4) HK type drawn outer ring needle roller bearing
5) BK type drawn outer ring needle roller bearing
The drawn cup needle roller bearings installed on the shaft end have double-sided open type (1) and single-sided closed type (2). The base end face of the closed drawn outer ring can withstand low axial guiding forces.
We have always insisted on striving for survival by quality, striving for development by quality, and constantly exploring and innovating Needle Bearing Nk Rna Na Nki HK Bk Hf0306 Hf0406 Hf0608 Hf0612 Hf0812 Hf1012 development areas. Customer satisfaction and success are the most important yardsticks to measure our work performance. Our company has built a good reputation for high quality products, timely delivery and responsive customer service. We have always adhered to the corporate philosophy of honest management and the mission of providing superior performance products to our customers.