What is the principle and structure of needle roller clutch bearing?

634 Published by Sep 06,2018

needle roller clutch bearing, also known as needle roller clutch, consists of a stamped outer ring and a plastic cage; the cage can be equipped with a plastic reed or a stainless steel reed to guide the needle, and the beveled raceway and needle on the outer ring Locking device. It has a groove on the surface, mainly for the Diabolo manufacturing enterprise, and has also introduced a physical ferrule type unidirectional needle roller bearing, mainly for fitness equipment enterprises, and also developed ultra-thin one-way needle roller bearings, mainly for precision machinery enterprises. At the same time specializing in the production of fishing gear retractor line with one-way bearings, special single bearings, remote control model car special one-way bearings.

needle roller clutch bearing NSK

The main structure of needle roller clutch bearing:

Bearing code structure features HF steel spring stamped outer ring needle roller clutch HF..KF plastic spring stamped outer ring needle roller clutch and bearing assembly HF..R steel spring stamped outer ring needle roller clutch, outer ring part knurling HF..KFR Plastic spring stamped outer ring needle roller clutch and bearing assembly, outer ring partially knurled HFL steel spring drawn outer ring needle roller clutch and bearing assembly, plain bearing or rolling bearing.

needle roller clutch bearing Japan

Principle of needle roller clutch bearing:

1. Slope and roller design
The single-needle roller bearings of the slope and the roller are basically composed of an outer ring of the inner diameter of the cylinder, an inner ring with a slope, and a set of rollers which are respectively subjected to the spring force and are always in close contact with the inner and outer rings. As long as the rotation of one of the raceways in its direction of motion has an effect on the other, this arrangement essentially ensures the instantaneousness of the speed of overrun and ensures immediate drive capability.

Application of needle roller clutch bearing:
This type of one-way bearing can be used for overtaking, indexing and non-reversal in various environments.

When used as a single needle roller bearing
Slope-type roller-type one-way bearings will be installed in this way, using the outer ring as a transcendental member. This is very important for high speed overtaking. In the application of the inner ring beyond, the centrifugal force acting on the roller will result in a limited speed of overrun.

NSK needle roller clutch bearing

When used as a non-return one-way bearing
Only the roller-roller one-way bearing with the inner ring rotating is suitable for relatively low speeds. Wedge type one-way bearings are recommended if the required speed is higher than the recommended speed.

When used as an indexing one-way bearing
The outer ring is often seen as a swaying element and the inner ring is often seen as a spur. Otherwise, the inertia of the rollers and springs will cause errors, especially at high frequency divisions. The use of diluted lubricants and powerful springs provides high-speed indexing accuracy and high quality.

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