Motomaxsfr
Search Product
Using 20CrMnTi alloy steel and precision gear hobbing technology, the tooth surface hardness is above HRC60, and the wear resistance life is over 25,000 kilometers. It is suitable for all-series models such as 420/428/520/530, meeting the customization needs of global importers and supplying stable goods.
20CrMnTi
Material
HRC58-62
Hardness
0.05mm
Accuracy
Selected 20CrMnTi carburized steel, compared with ordinary 45# steel, tensile strength increased by 35%, effectively preventing tooth breakage or deformation under high torque pulling, especially suitable for large displacement motorcycles.
Using high-frequency induction quenching and carburizing process, the depth of the hardened layer reaches 1.5 mm-2.0mm, and the surface hardness is maintained at about HRC60, ensuring that the tooth wear rate is reduced by 60% under high-speed operation.
The use of CNC gear hobbing machine processing, tooth profile tolerance control within 0.05mm, not only greatly reduce the chain meshing noise, but also improve the transmission efficiency to more than 98%, reduce power loss.
The surface is treated with electrophoretic black paint or galvanized, and passes the 72-hour neutral salt spray test (NSS Test), which does not rust in the high humidity environment of the shipping container, thus solving the problem of corrosion loss caused by long-term storage of inventory.
The optimized tooth root arc design perfectly fits the chain roller, reducing the impact and vibration during meshing. Compared with the traditional stamped sprocket, the riding noise is reduced by 5-8 decibels, and the end user experience is improved.
The mold library covers all mainstream pitches of ISO/DIN standard such as 420, 428, 520, 525, 530, etc. The number of teeth can be customized from 13T to 60T, which perfectly matches the after-sales market of mainstream models such as Honda and Yamaha.
| Parameter Items | Specifications Details |
| Product Name | Chain Sprocket for Motorcycle |
| Main material (front wheel) | 20CrMnTi (Carburized Steel) |
| Main material (rear wheel) | 1045 Steel (45#) / Aluminum Alloy 7075-T6 (optional) |
| Heat treatment hardness | Tooth surface HRC 58-62; Core HRC 35-45 |
| Hardened layer depth | 1.5mm – 2.0mm |
| Processing technology | CNC Milling / Hobbing |
| Flatness tolerance | < 0.15mm |
| Concentricity | < 0.10mm |
| Surface treatment | Zinc plating, sandblasting, black electrophoresis. |
| Compatible chain models | 420, 428, 428H, 520, 525, 530, 630 |
| Testing standards | DIN 8196 / ANSI B29.1 |
Ordinary commercially available sprockets often use simple surface blackening or shallow quenching, and the hardened layer is less than 0.5mm, causing the chain to “bite” through the hardened layer through wear after 5000 kilometers and enter the mild steel matrix to accelerate wear. This product adopts carburizing and quenching, and the hardened layer is more than 1.5mm deep. Even after 20,000 kilometers, the tooth surface still maintains high hardness, eliminating the premature appearance of “sharp teeth” and “hook teeth. The concentricity difference between the inner hole of the low-end sprocket and the ring gear (beating> 0.3mm) will cause the chain to tighten and loosen at high speed, causing severe jitter. This product through the CNC machining center a clamping molding, the radial runout control within 0.1mm. This high-precision processing not only extends the life of the chain, but also solves the problem of rear wheel swing and abnormal noise during high-speed riding.
For high-frequency express delivery motorcycles, the pain point that ordinary sprockets need to be replaced in 3 months is solved, and the replacement cycle is extended to more than 1 year.
For off-road and complex road conditions, the potential safety hazard of chain beating violently or even chain off due to sprocket tooth profile error is solved.
for the long-term shipping of transnational wholesale, it solves the economic loss of ordinary anti-rust oil in the wet salt spray environment, which leads to the rusting of goods to the port.
Suitable for importers who need to purchase a full range of models (e. g. 428-38T, 520-45T) to meet the after-sales replacement needs of different models. The independent packaging design facilitates distribution and inventory management.
For the pursuit of “low repair rate” repair chain, high-precision installation and long-life characteristics, can significantly reduce the quality of parts caused by customer complaints and secondary rework.
For small and medium-sized motorcycle manufacturers, we provide matching transmission parts in accordance with DIN/ANSI standards. Strict tolerance control (0.05mm) ensures that the transmission system of the whole vehicle is silent and smooth when it leaves the factory.
Suitable for sellers selling on Amazon or eBay, the product has undergone lightweight design and anti-rust packaging treatment. The weight of a single set is accurately controlled, and it can withstand long-distance logistics tests and reduce the return rate.
Always replace the sprocket and chain at the same time. The new chain with the old sprocket will accelerate the wear of the new chain, resulting in a mismatched spacing and shortening the life of the transmission system by more than 50%.
Check the tooth shape regularly. If it is found that the tooth tip becomes sharp or the tooth side presents a curved “hook shape”, it indicates that the hardened layer has been worn through and must be replaced immediately to prevent chain breakage.
During installation, use a laser alignment instrument or a pull wire method to ensure that the front and rear sprockets are on the same plane. A deviation of more than 1mm will cause the chain side plate to rub against the side of the sprocket, causing rattle and increased wear.
Every 500-1000 kilometers, use special chain wax or lubricating oil to spray on the contact surface between the tooth root and the chain roller. Avoid using high-pressure water gun to directly flush the sprocket bearing oil seal.
certificate
Welcome to our Frequently Asked Questions page. We have compiled answers to common questions you may have, hoping to provide you with clear and quick solutions. If you cannot find the information you need here, please feel free to contact our customer support team.
Using 20CrMnTi alloy steel and precision gear hobbing technology, the tooth surface hardness is above HRC60, and the wear resistance life is over 25,000 kilometers. It is suitable for all-series models such as 420/428/520/530, meeting the customization needs of global importers and supplying stable goods.
Material
20CrMnTi
Hardness
HRC58-62
Accuracy
0.05mm
Selected 20CrMnTi carburized steel, compared with ordinary 45# steel, tensile strength increased by 35%, effectively preventing tooth breakage or deformation under high torque pulling, especially suitable for large displacement motorcycles.
Using high-frequency induction quenching and carburizing process, the depth of the hardened layer reaches 1.5 mm-2.0mm, and the surface hardness is maintained at about HRC60, ensuring that the tooth wear rate is reduced by 60% under high-speed operation.
The use of CNC gear hobbing machine processing, tooth profile tolerance control within 0.05mm, not only greatly reduce the chain meshing noise, but also improve the transmission efficiency to more than 98%, reduce power loss.
The surface is treated with electrophoretic black paint or galvanized, and passes the 72-hour neutral salt spray test (NSS Test), which does not rust in the high humidity environment of the shipping container, thus solving the problem of corrosion loss caused by long-term storage of inventory.
The optimized tooth root arc design perfectly fits the chain roller, reducing the impact and vibration during meshing. Compared with the traditional stamped sprocket, the riding noise is reduced by 5-8 decibels, and the end user experience is improved.
The mold library covers all mainstream pitches of ISO/DIN standard such as 420, 428, 520, 525, 530, etc. The number of teeth can be customized from 13T to 60T, which perfectly matches the after-sales market of mainstream models such as Honda and Yamaha.
| Parameter Items | Specifications Details |
| Product Name | Chain Sprocket for Motorcycle |
| Main material (front wheel) | 20CrMnTi (Carburized Steel) |
| Main material (rear wheel) | 1045 Steel (45#) / Aluminum Alloy 7075-T6 (optional) |
| Heat treatment hardness | Tooth surface HRC 58-62; Core HRC 35-45 |
| Hardened layer depth | 1.5mm – 2.0mm |
| Processing technology | CNC Milling / Hobbing |
| Flatness tolerance | < 0.15mm |
| Concentricity | < 0.10mm |
| Surface treatment | Zinc plating, sandblasting, black electrophoresis. |
| Compatible chain models | 420, 428, 428H, 520, 525, 530, 630 |
| Testing standards | DIN 8196 / ANSI B29.1 |
For high-frequency express delivery motorcycles, the pain point that ordinary sprockets need to be replaced in 3 months is solved, and the replacement cycle is extended to more than 1 year.
For off-road and complex road conditions, the potential safety hazard of chain beating violently or even chain off due to sprocket tooth profile error is solved.
for the long-term shipping of transnational wholesale, it solves the economic loss of ordinary anti-rust oil in the wet salt spray environment, which leads to the rusting of goods to the port.
Suitable for importers who need to purchase a full range of models (e. g. 428-38T, 520-45T) to meet the after-sales replacement needs of different models. The independent packaging design facilitates distribution and inventory management.
For the pursuit of “low repair rate” repair chain, high-precision installation and long-life characteristics, can significantly reduce the quality of parts caused by customer complaints and secondary rework.
For small and medium-sized motorcycle manufacturers, we provide matching transmission parts in accordance with DIN/ANSI standards. Strict tolerance control (0.05mm) ensures that the transmission system of the whole vehicle is silent and smooth when it leaves the factory.
Suitable for sellers selling on Amazon or eBay, the product has undergone lightweight design and anti-rust packaging treatment. The weight of a single set is accurately controlled, and it can withstand long-distance logistics tests and reduce the return rate.
Always replace the sprocket and chain at the same time. The new chain with the old sprocket will accelerate the wear of the new chain, resulting in a mismatched spacing and shortening the life of the transmission system by more than 50%.
Check the tooth shape regularly. If it is found that the tooth tip becomes sharp or the tooth side presents a curved “hook shape”, it indicates that the hardened layer has been worn through and must be replaced immediately to prevent chain breakage.
During installation, use a laser alignment instrument or a pull wire method to ensure that the front and rear sprockets are on the same plane. A deviation of more than 1mm will cause the chain side plate to rub against the side of the sprocket, causing rattle and increased wear.
Every 500-1000 kilometers, use special chain wax or lubricating oil to spray on the contact surface between the tooth root and the chain roller. Avoid using high-pressure water gun to directly flush the sprocket bearing oil seal.