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Tianchi

Intermediate ring for automotive gearbox

Detail

The intermediate ring of synchronizer is a crucial part of the automobile gearbox synchronizer. The ring is matched with the inner ring and the outer ring of the synchronizer assemblies, enabling, under the effect of friction moment, their synchronous rotation after the inner cone of the synchronizer ring contacts with the outer cone of the gear ring as it is joined. At such time, the speed of the gear relative to the synchronizer ring is idle, and the gear is further engaged with the gear ring to be joined, thus achieving the gear shifting.

Tianchi Bearing has provided supporting intermediate rings for several mainstream gearbox manufacturers in China, and has received recognition from various customers on quality and service.

Intermediate ring for automotive gearbox

Claw type intermediate ring

The claw type intermediate ring consists of the conical body and claw, wherein the claw is erected on the conical body.

According to the design functional requirements of synchronizer, the claw type intermediate ring mainly includes three-claw type, four-claw type and six-claw type.

Intermediate ring for automotive gearbox

Main parameters and tolerances:

Outer cone diameter di

exceed

To

size

Δdip

Li μm

VdP(△Cir)

△2ß

Sdi/10mm

Ki

Ra  μm

20

50

By product map

 

Generally take ±0.01;
Special requirements by customer map

3

0.008

±0.003

0.012

0.010

0.32

50

80

3

0.01

±0.003

0.008

0.012

0.4

80

120

4

0.012

±0.004

0.006

0.015

0.4

120

150

5

0.014

±0.004

0.005

0.018

0.4

150

220

6

0.016

±0.004

0.004

0.020

0.6


Inner cone diameter

exceed

To

size

ΔEep

VEP(△Cir)

Ke

Le μm

△2α

SE/10mm

Ra μm

10

30

By product map

 

 

Generally take ±0.01;
Special requirements by customer map

 

0.009

0.010

3

±0.003

0.012

0.32

30

50

0.010

0.012

3

±0.003

0.010

0.4

50

80

0.012

0.015

4

±0.003

0.009

0.4

80

120

0.014

0.018

4

±0.004

0.007

0.4

120

150

0.016

0.020

5

±0.004

0.006

0.4

150

210

0.018

0.020

6

±0.004

0.005

0.6

Material

Foreign intermediate ring products are mostly made of carburized steel while the products are made of GCr15. Through many bench tests and verification of market, the material fully meets the usability requirements.