The pistons we manufacture are always made of high-quality materials. Every part of the piston, such as the compression ring, wiper ring, oil ring, piston pin, etc., is manufactured with the utmost precision.
Strengths:
- Friction-side linings to maintain radial tension on the rings
- Long piston life
Characteristics:
- Made of AC8A aluminum material
- Compression rings manufactured to precision specifications from high-quality cast iron
- Manufactured under strict supervision to maintain quality
- Each component is tested, therefore there is no margin for error
- Compression ring made of DH 30 nodular cast iron
- DQ 20 steel composite wiper ring
- Oil rings made of DS 45 steel
- Piston pin made of 20 CrMo steel
- Piston available in bright silver finish, black finish, pewter finish
- ADC 12 raw material with a high copper content of 1.65%
- Maintain a sleeve tolerance level of 0.002 mm ~ 0.003 mm
- Heat treatment at 350 degrees
- Highly precise VMC machining
- Brinell hardness range ≥71 HBS
- Tensile strength range ≥ 125 MPa
- Ductility ≥ 1%
Related products
- Raw Material
- Manufacturing
- Evidence
Our process begins with the quality of our raw materials, and for piston kits, we use superior AC8A aluminum. Each component of the kit is manufactured with high-temperature resistant materials and has an internationally recognized quality finish.
| Parameter | Details | Elpra | Chinese Product | Advantages of Elpra |
|---|---|---|---|---|
| BOP (Parts Purchased) |
Piston rings | Internal Process | BOP | The more BOPs there are, the greater the chance of rejection. |
| Piston Pin | Internal Process | BOP | ||
| Bolt locks | BOP | BOP | ||
| Raw material | Pin | High-grade steel (20CrMo) | Low quality steel | Our product has high corrosion resistance |
| Rings | 1. High-grade ring material – Nodular cast iron 2. Wiper ring – (DQ20) STEEL 3. Oil ring – (DS45) STEEL |
Standard steel hoops | 1. We offer lightweight and structural materials . 2. With precise specifications for iron castings. |
|
| Piston | High-grade AC8A with a copper content of 1.65% | Substandard ADC12 with a copper content of 0.5-0.8%, which is below international standards. | We use a fresh raw material composition designed to reduce ductility and corrosion resistance. Increased ductility, specifically 1%, leads to greater versatility and higher performance at a lower cost. |
We focus on every step of manufacturing, from technology to finishing. See how we outperform the competition in each stage of the manufacturing process.
| Parameter | Details | Elpra | Chinese Product | Advantages of Elpra |
|---|---|---|---|---|
| Manufacturing | Production technology | Fully automated CNC machines with a capacity of 4 pistons per minute | Semi-automated CNC or Lathe machines | By using fully automated CNC machines, we offer products with minimal tolerance levels and negligible rejection at the final stage. |
| Vertical milling center | Fully automatic VMC (vertical milling center) | VMC is not available in most factories | The product is manufactured using VMC for precise oil grooves and bolt holes. These machines are only available from OEM manufacturers. | |
| Heat treatment | Heat treatment of 350 degrees | Maximum heat treatment of 250 degrees |
Maintain the Brinell hardness range of 741 HBS |
|
| Electroplated | Automatic plating workshop with different finishes available
3. Tin finish |
Semi-automatic or manual installations |
5. Long piston life |
We manufacture and market a wide range of pistons, piston pins, piston rings, and pin retainers, designed for the automotive market. Our 160 highly skilled team members manage our state-of-the-art R&D center, which comprises three distinct departments: technical, development, and mold making. We produce complex and specially shaped cylindrical bores. Utilizing advanced molding equipment, we manufacture all types of casting, die-casting, and forging molds with short production cycles, high production efficiency, and consistent quality. We offer graphite, tin-plated, and anti-oxidation coatings applied to piston skirts, which act as a self-cleaning buffer between the pistons and cylinder bores. As the pistons move, the coating wears away and fills any gaps in the skirt/cylinder bore. This creates an oil film layer to enhance piston durability and engine performance. For cans, the plating is relatively thick, providing tight tolerances and durability in addition to a flawless exterior; this quality lining
It offers benefits in many more aspects. A coating provides durable and reliable protection in high-performance applications. This coating is popular in most motorcycle builds. An excellent coating can protect this vital part and allow for better combustion, less heat and friction, and valuable protection of the component. In the piston kit, we offer different types of finishes: tin finish, standard bright finish, and graphite coating. In addition to giving the replacement part a perfect appearance, a good finish helps create a smoother surface for better overall motorcycle engine performance.
Raw Material Testing
| Raw material | AC8A | |||
|---|---|---|---|---|
| S.No. | Chemical Composition | STD | Elpra | Chinese Product |
| 1 | Yeah | 11-13 | 12.86 | 11.94 |
| 2 | Faith | =0.70 | 0.31 | 0.32 |
| 3 | Cu | 0.8˜1.3 | 1.09 | 1.01 |
| 4 | Mg | 0.8˜1.3 | 1.11 | 0.98 |
| 5 | Neither | 0.8˜1.5 | 0.93 | 0.95 |
| 6 | Zn | =0.15 | 0.01 | 0.01 |
| 7 | Mn | =0.15 | 0.02 | 0.01 |
| Rockwell Hardness | 63-75 HRB | 70 | 71 | |