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For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant

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For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant

Brand Name : DEM

Model Number : BMW Motor 2.5L

Certification : ISO 9001:2008 ISO/TS16949

Place of Origin : Zhejiang

MOQ : 200 SETS

Price : Consult

Payment Terms : T, T/T, Western Union, MoneyGram

Supply Ability : 10000 SETS PER MONTH

Delivery Time : 15days

Packaging Details : CARTONS

Package : Cartons

Car make : BMW

Oem no. : M21D

DIA. : 80.0mm

Thickness : 80.0mm 2.5+2+3.5

No.cyl : 6

Type : PISTON RING

Size : Standard Size

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For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant

Model For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant
Weight 0.15 kg/PC
DIA. 80.0mm
SIZE 2.5+2+3.5
Application PISTON RING
Quality ISO 9001:2008 ISO/TS16949 standard
Precision 0.021mm
Service OEM available



Product Characteristics
For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant
For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant
For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant

Product Technology


Piston rings usually require heat treatment to improve their hardness and wear resistance. The heat treatment process includes steps such as heating and cooling, and the treatment parameters are determined based on specific material and product requirements. Heat treatment can endow piston rings with excellent mechanical properties and surface hardness.


Product Principle

The piston ring also has the function of guiding the piston to move on the cylinder wall, ensuring the stability and accuracy of the piston. Through close contact with the cylinder wall, the piston ring limits the axial and radial displacement of the piston, preventing it from deviating from its normal motion trajectory.

The piston ring also has the function of guiding the piston to move on the cylinder wall, ensuring the stability and accuracy of the piston. Through close contact with the cylinder wall, the piston ring limits the axial and radial displacement of the piston, preventing it from deviating from its normal motion trajectory.

The piston rings also perform lubrication functions. During operation, a small lubricating oil film is formed between the piston ring and the cylinder wall to reduce friction and wear. This helps to reduce energy consumption, extend piston ring life, and improve the efficiency of the engine or compressor.

The piston ring is used to seal the gap between the piston and the cylinder block to prevent leakage of lubricating oil and combustion chamber gas. High quality piston rings can provide excellent sealing performance, ensuring the normal operation of the engine or compressor, and minimizing energy loss and environmental pollution.

The piston ring is generally composed of several rings, closely connected on both sides. Common structures include oil rings, oil control rings, and upper and lower spiral grooves. The piston rings with different structures undertake different functions, such as sealing the cylinder, conducting heat, lubricating, etc.

For BMW Piston Ring Motor M21D 2.5L 80.0mm 2.5+2+3.5 Wear Resistant


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