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overrunning alternator pulley in China

alternator pulley in China

clutch pulley in China

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GB Precision

TOP OE quality manufacture

Changzhou GB Precision Machinery Co., LTD. A professional manufacturer of one-way pulleys for car Alternators. Company has strong production and manufacturing capabilities and simultaneous development capabilities and test verification capabilities. It has an independent processing workshop and a dust-free assembly workshop. It has a certain influence in the international market in terms of technology, quality, capacity and variety. With independent one-way pulley development platform, in order to ensure the stability and consistency of the products, our company has added a fully automatic assembly line, which is far ahead of similar products in product stability.

The company's existing automotive generator one-way pulley series products more than 500 models, covering most of the world's models. Has a good quality reputation in the domestic and international markets. At present, the company's domestic customer base has covered 30% of the well-known OEMs, and provides OE services to domestic OEMs such as Jianghuai, Chery and Ankai; also  the suppliers of internationally renowned auto parts companies WAI, DENSO, VALEO. And in the United States, Mexico, South Korea, Australia, the United Kingdom, Poland, the Netherlands, Turkey, Germany, Russia and other countries have brand agents.

We strictly implements the ISO 9001/14001/TS16949 quality management system. To provide a more reliable guarantee for product quality, the company also set up a modern laboratory, including high-temperature emergency shift load test platform and corrosion-resistant salt spray test platform, full-speed full-load test platform, low-temperature start test machine, bearing performance test bench, CNC analog load test bench; and after Toyota Corolla 1.6/20 units/year, Chery 1.9D/10 units/years of millions of kilometers of road verification, ensuring comparable or superior performance with imported products and Life expectancy, product warranty period is 100000 km or 2 years (whichever comes first).

We are committed to providing the most competitive high quality products and prices for the Chinese automotive industry and global automotive users. We are sure to be your best partner!

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Alternator clutch Pulley

A alternator clutch pulley is the mechanical link between the alternator and the engine output crankshaft pulley. The pulley drives the alternator which allows the battery to be recharged. The Overrunning Alternator Pulley (OAP), also called the freewheel pulley, is a spare part of the complete alternator. It is composed of a pulley with an outside diameter suitable for fitting a “poly-V” belt (drive belt), a one-way clutch unit with bearing supports, an inner ring, two seals and an end cover in plastic.


The Freewheel Pulley is used to:

1.Protect belt drive system by filtering engine torsional vibrations to improve the belt drive longevity

2.Ensure belt drive N.V.H. (Noise-Vibration-Harshness) for optimum driving comfort

3.Stop friction losses caused by belt slippage

4.Allow the alternator rotor to turn in freewheel mode when the engine is slowing down or stopping for maximum system efficiency, fuel savings and CO2 emissions reduction


As one of the leading world experts in Electrical Systems, GB PRECISION presents a complementary range to its alternator portfolio to provide full packaged services for customers.



Master the complete certified R & D system. Core team have over ten years of experience in OAP&OAD.

Annual production capacity 100,0000 PCS .


A series of production processes such as feeding, spare parts production, assembly, and packaging are strictly implemented in accordance with ISO/TS16949 standards


The company supply  2 years or 100,000 kilometers quality guarantee (which ever comes first) for the OAP&OAD .


Compared with similar products, the price is competitive. Rapid response and professional service capabilitiesto ensure customer satisfaction.

Contact Us

Add :Beimiaoqiao Village Wujin District ChangZhou Jiangsu China  |  Tel:  0086-18758477626(what'sAPP)

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