Motomaxsfr
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The motomaxsfr adopts high-quality 45 steel and 20CrMnTi alloy steel. After high-frequency quenching, the tooth surface hardness reaches HRC45 or more, and the wear resistance life exceeds 30000 kilometers. It is accurately adapted to the standards of multinational models and supports wholesale.
45 steel and alloy steel
Material
HRC40 to 50
Hardness
less than 0.1mm
Tolerance
High-frequency induction hardening technology is used to make the tooth top hardness reach HRC45 to 50, while maintaining the tooth root toughness. This hardness gradient design increases the fatigue strength of the sprocket by 40%, effectively preventing the risk of tooth breakage under long-term high-speed operation.
All products are hobbed by CNC machine tools, and the profile error is controlled within 0.05mm. The precise tooth engagement reduces the impact friction between the chain and the sprocket, reduces the transmission noise by about 15 decibels, and improves driving comfort.
The front sprocket is made of 20CrMnTi alloy carburizing steel, and the rear sprocket is made of national standard 45 high-quality carbon structural steel. The tensile strength of the material is above 600Mpa, ensuring that no plastic deformation occurs under high load conditions above 8000 revolutions.
Provide a variety of surface processes such as galvanizing, chrome plating and blackening treatment, and the salt spray test duration exceeds 72 hours. Even if it is used in wet, muddy or coastal high salt spray environment, it can effectively prevent surface oxidation and rust and maintain a smooth appearance.
Through automatic detection equipment, the plane runout and radial runout are strictly controlled within 0.15mm. The extremely low runout tolerance reduces chain jitter, increases power transmission efficiency to more than 98%, and reduces power loss.
Covering a full range of chain pitches from 420 and 428 to 520 and 530, the number of teeth ranges from 13 to 56 teeth. The mold library contains more than 2000 specifications, perfectly matching the interfaces of mainstream models such as Honda, Yamaha, Suzuki and Kawasaki.
| Parameter Items | Technical Specifications/Specifications |
| Product Name | Motorcycle Chain Sprocket |
| Front sprocket material | 20CrMnTi carburizing alloy steel |
| Rear sprocket material | 45 (1045) premium carbon structural steel / 7075-T6 aerospace aluminum alloy (can be selected for racing applications) |
| Heat treatment hardness | Tooth surface HRC 40-55; Induction hardened layer depth 1.5mm – 2.5mm |
| Applicable chain models | 415 / 420 / 428 / 520 / 525 / 530 |
| Processing technology | CNC gear hobbing, keyway drawing, precision stamping |
| Dimensional tolerances | Inner hole tolerance H7; Tooth thickness tolerance h11 |
| runout tolerance | Radial runout < 0.2mm; axial runout < 0.2mm |
| Surface treatment | Color zinc plating, white zinc plating, chrome plating, blackening, sandblasting, electrophoretic painting |
| Testing standards | Compliant with ISO 9001:2015 and GB/T 1243-2006 standards |
| Average service life | Under normal maintenance, it will last 25,000 to 30,000 kilometers. |
This group needs to purchase standard parts with complete specifications and high inventory turnover. This product covers more than 95% of the mainstream models in the market, and its stable quality can significantly reduce the after-sales return rate. It is suitable for use as a standing inventory for repair shops.
For users who need high-strength mud driving, our high-hardness sprockets can resist sand grinding. The precise gear ratio customization service can meet the needs of the team to adjust the acceleration performance or extreme speed performance, and adapt to the harsh competition environment.
For small and medium-sized vehicle manufacturers, we provide OEM standard supporting services. Strict tolerance control ensures fast installation on the assembly line without secondary debugging, which can effectively reduce assembly costs and improve vehicle quality.
For users who often ride across borders or provinces, the high wear resistance of the motomaxsfr sprocket means that there is no need to change the sprocket frequently during the journey of tens of thousands of kilometers, providing extremely high reliability and peace of mind.
For every 1000 kilometers, observe the sprocket tip shape. If the tooth tip becomes sharp and serrated or the tooth valley is obviously depressed, it indicates that the hardened layer has been worn through and must be replaced immediately, otherwise it will accelerate the damage of the chain.
When installing a new sprocket, you must use the laser alignment tool or the pull wire method to ensure that the front and rear sprockets are in the same plane. A deviation of more than 0.5mm will cause severe wear on the sprocket sides and may cause the chain to fall off.
It is forbidden to use strong acid or strong alkali cleaning agent to clean the sprocket. It is recommended to use kerosene or special chain cleaning agent with soft brush to remove sludge. After cleaning, wipe with a dry cloth and air dry to prevent the metal surface from corroding the cleaning agent residue.
When replacing the sprocket, it is strongly recommended that the front sprocket, rear sprocket and chain be replaced at the same time. Mixing old and new will cause pitch mismatch, and the new sprocket will be quickly worn by the old chain within a few hundred kilometers, causing great waste.
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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.
The motomaxsfr adopts high-quality 45 steel and 20CrMnTi alloy steel. After high-frequency quenching, the tooth surface hardness reaches HRC45 or more, and the wear resistance life exceeds 30000 kilometers. It is accurately adapted to the standards of multinational models and supports wholesale.
Material
45 steel and alloy steel
Hardness
HRC40 to 50
Tolerance
less than 0.1mm
High-frequency induction hardening technology is used to make the tooth top hardness reach HRC45 to 50, while maintaining the tooth root toughness. This hardness gradient design increases the fatigue strength of the sprocket by 40%, effectively preventing the risk of tooth breakage under long-term high-speed operation.
All products are hobbed by CNC machine tools, and the profile error is controlled within 0.05mm. The precise tooth engagement reduces the impact friction between the chain and the sprocket, reduces the transmission noise by about 15 decibels, and improves driving comfort.
The front sprocket is made of 20CrMnTi alloy carburizing steel, and the rear sprocket is made of national standard 45 high-quality carbon structural steel. The tensile strength of the material is above 600Mpa, ensuring that no plastic deformation occurs under high load conditions above 8000 revolutions.
Provide a variety of surface processes such as galvanizing, chrome plating and blackening treatment, and the salt spray test duration exceeds 72 hours. Even if it is used in wet, muddy or coastal high salt spray environment, it can effectively prevent surface oxidation and rust and maintain a smooth appearance.
Through automatic detection equipment, the plane runout and radial runout are strictly controlled within 0.15mm. The extremely low runout tolerance reduces chain jitter, increases power transmission efficiency to more than 98%, and reduces power loss.
Covering a full range of chain pitches from 420 and 428 to 520 and 530, the number of teeth ranges from 13 to 56 teeth. The mold library contains more than 2000 specifications, perfectly matching the interfaces of mainstream models such as Honda, Yamaha, Suzuki and Kawasaki.
| Parameter Items | Technical Specifications/Specifications |
| Product Name | Motorcycle Chain Sprocket |
| Front sprocket material | 20CrMnTi carburizing alloy steel |
| Rear sprocket material | 45 (1045) premium carbon structural steel / 7075-T6 aerospace aluminum alloy (can be selected for racing applications) |
| Heat treatment hardness | Tooth surface HRC 40-55; Induction hardened layer depth 1.5mm – 2.5mm |
| Applicable chain models | 415 / 420 / 428 / 520 / 525 / 530 |
| Processing technology | CNC gear hobbing, keyway drawing, precision stamping |
| Dimensional tolerances | Inner hole tolerance H7; Tooth thickness tolerance h11 |
| runout tolerance | Radial runout < 0.2mm; axial runout < 0.2mm |
| Surface treatment | Color zinc plating, white zinc plating, chrome plating, blackening, sandblasting, electrophoretic painting |
| Testing standards | Compliant with ISO 9001:2015 and GB/T 1243-2006 standards |
| Average service life | Under normal maintenance, it will last 25,000 to 30,000 kilometers. |
This group needs to purchase standard parts with complete specifications and high inventory turnover. This product covers more than 95% of the mainstream models in the market, and its stable quality can significantly reduce the after-sales return rate. It is suitable for use as a standing inventory for repair shops.
For users who need high-strength mud driving, our high-hardness sprockets can resist sand grinding. The precise gear ratio customization service can meet the needs of the team to adjust the acceleration performance or extreme speed performance, and adapt to the harsh competition environment.
For small and medium-sized vehicle manufacturers, we provide OEM standard supporting services. Strict tolerance control ensures fast installation on the assembly line without secondary debugging, which can effectively reduce assembly costs and improve vehicle quality.
For users who often ride across borders or provinces, the high wear resistance of the motomaxsfr sprocket means that there is no need to change the sprocket frequently during the journey of tens of thousands of kilometers, providing extremely high reliability and peace of mind.
For every 1000 kilometers, observe the sprocket tip shape. If the tooth tip becomes sharp and serrated or the tooth valley is obviously depressed, it indicates that the hardened layer has been worn through and must be replaced immediately, otherwise it will accelerate the damage of the chain.
When installing a new sprocket, you must use the laser alignment tool or the pull wire method to ensure that the front and rear sprockets are in the same plane. A deviation of more than 0.5mm will cause severe wear on the sprocket sides and may cause the chain to fall off.
It is forbidden to use strong acid or strong alkali cleaning agent to clean the sprocket. It is recommended to use kerosene or special chain cleaning agent with soft brush to remove sludge. After cleaning, wipe with a dry cloth and air dry to prevent the metal surface from corroding the cleaning agent residue.
When replacing the sprocket, it is strongly recommended that the front sprocket, rear sprocket and chain be replaced at the same time. Mixing old and new will cause pitch mismatch, and the new sprocket will be quickly worn by the old chain within a few hundred kilometers, causing great waste.