Solid collar needle roller bearing

1. The solid collar needle roller bearing has compact structure, small radial size and large load carrying capacity.

2. It is suitable for the parts of which the radial overall size is limited. It is also widely applied to the situation where the shaft or housing has the swinging motion.

3. In general, the needle roller bearing only withstands the radial load, not the axial load. When the shaft has axial load, it can be used in combination with other bearings.

4. However, it does not limit the axial shift of shaft or housing. The limiting rotational speed of needle roller bearing is lower.

5. In high rotational speed of main machine, the needle roller bearing with cage shall be chosen as far as possible. In compassion with other types of needle roller bearings, under the situation of same radial size, the needle roller bearing has the large load carrying capacity and high rigidity but has high friction torque.

6. This kind of bearing has many series with different structure and size. It is requested that the harness, processing accuracy and surface roughness of shaft journal surface and rolling surface of outer housing be same as those of the collar of bearing.

7. As for the needle roller with G2 class, the diameter varies within 2 μm in group.

Except the full complement needle roller bearings, they have the rigid cages, which cancorrectly guide the parallel axis line of needle roller.

Model NK needle roller bearings without inner ring

1. The needle roller bearing without inner ring is suitable for the parts of which the radial size is limited. 

   Because of no inner ring, the surface of shaft journal fitted with it is acted directly as rolling surface.

2. It is requested that the surface hardness be no less than HRC60, surface roughness, no more than 0.63μm. 

3. This kind of bearing does not limit the axial shift of shaft and housing and has high limiting rotational speed.

Main parameters of Nk needle roller bearing

1. It will be put in cartons, and it can be customized according to your requirements to package.

Operating since 1985
Jiangsu Jiujiu Traffic Facilities was founded in 1985. We are a new type of enterprise integrating research, manufacture and sale of auto parts in China.

Following Various Standards for Quality Assurance
Our company is committed to the development and production of special metric and inch needle bearings, steel jackets, and automotive two-point simple, self-lock two-point, emergency locking three-point, and pre-tensioner seat belts, as well as other related products.

We are strong in technology and own advanced production and testing machines. We strictly follow international standards during production, which makes our products conform to CCC, US DOT, CE and E-Mark (ECER16) standards. We also got ISO/TS 16949:2009 certification.

Furnished with Modern Machinery
Advanced technology:

• Tilting presses, instrument lathes, centerless grinding machines, 
• Wire cutting electrical discharge machines, abrasive finishing machines, 
• Computer knot tying machines, computer controlled lockstitch sewing machines,
• Ultrasonic welding machines, RCW-80-9 mesh belt heat treatment furnaces and other production equipment, 
• Totaling to over 100 pieces. 
• Hardness testers, metallurgical analysis apparatus, 
• Salt spray (corrosion) test chambers, machines for tensile, dust, retractor durability, restitution power, lock durability and opening force testing, 
• As well as high-low temperature testing chambers, to ensure the highest product quality.

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