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Flywheel Ring Gear

Posted at: Offers to Sell and Export | Posted on: Tue 15 Sep, 2009 8:12 am | Product Category: Flywheels [20]
flywheel ring gear
Products Photos CatalogFlywheel Ring Gear Photos Catalog

Best price high quality


1) Raw material.:steel, iron and any you request raw material


Produced according to your drawing or sample.

3) Quotation: If you could tell us the inner and outside diameter, height and the teeth number, material, port, then we could give you the price for your reference.


5) OEM:a drawing or sample

A starter ring gear, sometimes called a starter ring or ring gear, is a medium carbon steel ring with teeth that is fitted on the periphery of a flexplate or flywheel of an internal combustion engine, mostly for automotive applications.

The teeth of the starter ring are driven by the smaller gear (the pinion) of the starter motor. The primary function of the starter ring is to transfer torque from the starter motor pinion to the flywheel or flexplate to rotate the engine to begin the cycle.

The starter ring gear is most commonly made by forming a length of square or rectangular steel bar into a circle and welding the ends together. There then follow various heat-treatmentlike normalising and tempering and machining operations, including the machining of the teeth and finally a heat-treatment operation. The teeth of the starter ring need to be hardened in order to increase their strength and resist wear. The normal hardness at pitch circle diameter is 45-55 HRC. The hardness at the root of the teeth is about 40 HRC and at 2 mm below root the hardness is 35 Hrc max. The body of the ring is generally left untreated.

Engines with manual transmission usually have a heavy flywheel, typically 5 to 10 kg of cast iron, with the starter ring gear shrunk onto the outside. This is done by heating the ring to around 200 C to expand the ring which is then placed onto the flywheel, hold the ring gear with hydraulic pressure of 5 kg/cm2 for 1 min and allowed to cool the ring gear.The starter ring is thereby firmly attached to the flywheel.

Company Contact:

No member photo
Contact Name: Ethan
Company Name: Qingdao Chuntai Automobile Components Co., Ltd
Email: Email
Tel: 15063906192 or 86-0532-84813270
Fax: 086-0532-84825729
Street Address: 11 Binhai Road,
South Shijia Village, Licang District,
Qingdao City, Shandong, China 266043
Website: http://www.chuntai-autoparts.com.cn
Member name: qdchuntai
Country: China-CN China
Member Since: 15 September 2009
Total Leads: 3 qdchuntai Import Export Business Leads
Business focus: Manufacture Flywheel Ring Gear
Verify: Safe Import Export Tips
Product Category: Flywheels [20]

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