Caterpillar Replacement Parts Hardness C7 Piston 238 2689 02 Cat Spare Parts

Caterpillar Replacement Parts Hardness C7 Piston 238 2689 02 Cat Spare Parts

Hardness C7 Piston 238-2689-02 For Excavator Diesel Engine High Wear Resistance For Cat

In recent years, in order to reduce the friction work, improve the mechanical efficiency, reduce the ring height and shorten the piston compression height and total height, the number of piston rings is decreasing.

From the 30 s 5~6 ring groove development to 2~3 ring groove. It was found that more than one compression ring was not necessary, because if the upper compression ring failed, the other compression rings could not seal the gas in the combustion chamber from leaking into the crankcase, nor could they control the oil up the cylinder wall into the combustion chamber.

Therefore, instead of increasing the number of piston rings, it is better to take measures to improve the performance of piston rings, with a compression ring and two oil ring grooves to ensure the completion of sealing gas and oil control.

Piston type and surface treatment : Alfin Reinforcement

Created for operation in high temperature environment like turbo engines.

Moly Skirt : Help produce less frictional heat and engine noise.
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Nitriding: The nitriding products have excellent wear resistance, fatigue resistance, corrosion resistance and high temperature resistance .

Product Description

Piston type & surface treatment

Alfin Reinforcement

Piston with alfin reinforcement are resistant to compression ring groove wear . the alfin reinforcement also act as a heat barrier minimizing heat conduction from piston skirt area. Such pistons can thus withstand the demand for higher load and highet performance engine .

Cooling Gallery

Created for operation in high temperature environment like turbo engines. Through oil circulation in the gallery, pistons are intensively cooled in the piston crown and ring belt area .

Anodized Crown

Anodization of piston crown creates a hard crown surface thus providing pistons with extra protection against crown piting and wear .

Tin Coating

Tin coated surface provides extra lubrication and smoother running of cylinder components resulting in longer engine lifetime .

Moly Skirt

Help produce less frictional heat and engine noise. The extra lubricative effect also minimize cylinder bore wear and prevent piston scuffing .

Phosphating

Reduce tge fructuib from with the cylinder liner . And to protect the piston from corrosion .

Nitriding

The nitriding products have excellent wear resistance, fatigue resistance, corrosion resistance and high temperature resistance .

Guangzhou Shangshun Engineering Machinery Parts Co., LTD.

Guangzhou Shangshun Engineering Machinery Parts Co., LTD., 14 years specializing in engine spare parts, a total of four subsidiary below: Guangzhou machinery spare parts, Guangzhou baiyikang machinery spare parts, Guangzhou zhongcheng machinery sapre parts , Guangzhou hongying engine maintenance center. The main products are: cylinder liner, piston, piston ring, valve, pipe, seat, bearings, water tank, crankshaft, Chassis spring, etc. They are all made of the host form a complete set of materials,quality are among the best in the industry. Business throughout the country to overseas states. The annual turnover of the company is about RMB 78 million. Now it is the general agent of OKJ heavy industries engine parts in China.

Our mission: Make a living at it, be good at it; High-profile work, low-key life; Customer first, mission will reach!

Our concept: OKJ make maintenance no longer difficult!

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