Motomaxsfr
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Motorcycle Chain Sprocket Customizable & OEM
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
Материал
HRC40 to 50
Твердость
less than 0.1mm
Tolerance
Motorcycle Chain Sprocket characteristics
Double heat treatment process to extend life
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.
CNC precision machining to reduce noise
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.
Optimization of raw materials to ensure structural strength
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.
Multi-layer surface treatment to prevent corrosion
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.
Strict coaxiality and runout control
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.
Wide pitch and number of teeth
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.
Motorcycle Chain Sprocket Detailed Specifications Table
| Элементы параметров | Technical Specifications/Specifications |
| Название продукта | Звездочка цепи мотоцикла |
| 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) |
| Твердость при термообработке | Tooth surface HRC 40-55; Induction hardened layer depth 1.5mm – 2.5mm |
| Applicable chain models | 415 / 420 / 428 / 520 / 525 / 530 |
| Технология обработки | 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 |
| Обработка поверхности | Color zinc plating, white zinc plating, chrome plating, blackening, sandblasting, electrophoretic painting |
| Стандарты тестирования | 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. |
Motorcycle Chain Sprocket contrast point
motomaxsfr motorcycle sprocket adopts advanced “tooth surface modification” technology. Compared with ordinary commercially available sprockets, we have optimized the arc radius at the bottom of the tooth valley. This slight geometric improvement makes the impact force of the chain roller at the moment of engagement more evenly distributed, thus reducing the comprehensive wear rate of the sprocket and chain by 25% under the same material, which is especially suitable for long-distance driving with complex road conditions. In terms of production consistency, motomaxsfr introduced a fully automated image screening system to scan 100 percent of each factory sprocket. Compared with the traditional manual sampling mode (usually only 5% sampling rate), we need to ensure that the installation hole error of each product delivered to wholesalers is zero, completely eliminating the problem that end users cannot install or have poor dynamic balance after installation due to hole deviation.
Eliminate the risk of tooth breakage and deformation under high torque
In view of the problem that the large-displacement motorcycle starting torque is too large, which leads to the tooth chipping of the ordinary sprocket, the motomaxsfr optimizes the induction heating frequency and accurately controls the depth of the hardened layer to ensure that the tooth root has sufficient impact resistance and toughness, and solves the problem of brittle fracture.
Eliminate the abnormal noise and jitter of the chain during high-speed driving
In view of the abnormal “click” of the chain caused by poor coaxiality of cheap sprockets on the market, we strictly control the circular runout tolerance within 0.15mm. The motomaxsfr sprocket ensures that the chain runs smoothly at high speeds and solves the problem of noise nuisance and excessive vibration in the transmission system.
Oversee the problem of rapid rust in harsh environments
In view of the problem that sprockets fed back by users in tropical rain forests or coastal areas are easy to rust and jam, the motomaxsfr upgraded the surface anti-corrosion process and adopted double-layer electrophoresis or thickened galvanizing treatment to solve the pain points of short storage period of common blackened sprockets, which not only affect beauty but also accelerate aging after use.
Motorcycle Chain Sprocket Applicable Crowd
Motorcycle after-sales repair and accessories wholesaler
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.
Off-road motorcycle modification clubs and teams
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.
Regional motorcycle assembly plant
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.
Long-distance motorcycle enthusiasts and heavy locomotive users
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.
Instructions for use Motorcycle Chain Sprocket
Periodic visual inspection of wear
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.
Axis alignment correction during installation
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.
Correct cleaning and decontamination methods
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.
Implementation of the replacement package principle
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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Q1: Why does the front sprocket usually wear out faster than the rear sprocket?
A1: The front sprocket has fewer teeth. Under the same driving distance, the number of turns and meshing times of the front sprocket are much more than those of the rear sprocket, and the unit pressure is also greater. Therefore, it is usually recommended to check twice the frequency of the rear sprocket.
Q2: What is the difference between 45 steel and 20CrMnTi material?
A2: 45 steel is a high-quality carbon structural steel with good comprehensive performance and is commonly used in large-size rear sprockets. 20CrMnTi is alloy carburized steel with higher surface hardness and wear resistance, which is more suitable for front sprockets with concentrated stress and small volume.
Q3: What does the “428-42T” mark on the sprocket mean?
A3: “428” represents the pitch model of the chain and must be used in conjunction with the same model chain; “42T” represents that the sprocket has 42 teeth. When purchasing, you must ensure that these two parameters are consistent with the original car specifications or modification requirements.
Q4: How long can your sprocket rust-proof treatment last?
A4: Our sprockets are thickened galvanized or electrophoretic process. Under normal storage environment (dry and ventilated), the unpacked package can be kept for more than 2 years without rust. After loading and use, it depends on the maintenance situation, and can usually maintain the whole service cycle without serious corrosion.
Q5: Aluminum alloy sprocket and steel sprocket which is better?
A5: Steel sprockets have excellent wear resistance, long life, high cost performance, suitable for daily commuting and commercial use; aluminum alloy is light in weight, which can reduce unsprung mass and improve control, but has a short life. It is mainly used for racing or lightweight Scenes with extreme requirements.
Q6: Does bulk purchase support custom tooth count or marking?
A6: Support. For B2B wholesale customers, we provide OEM service, which can customize special tooth number ratio according to customer needs, and can be laser marked on the surface of the product to mark the customer’s brand Logo or specific part number.
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Звездочка цепи мотоцикла
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.
Материал
45 steel and alloy steel
Твердость
HRC40 to 50
Tolerance
less than 0.1mm
Motorcycle Chain Sprocket characteristics
Double heat treatment process to extend life
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.
CNC precision machining to reduce noise
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.
Optimization of raw materials to ensure structural strength
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.
Multi-layer surface treatment to prevent corrosion
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.
Strict coaxiality and runout control
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.
Wide pitch and number of teeth
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.
Motorcycle Chain Sprocket Detailed Specifications Table
| Элементы параметров | Technical Specifications/Specifications |
| Название продукта | Звездочка цепи мотоцикла |
| 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) |
| Твердость при термообработке | Tooth surface HRC 40-55; Induction hardened layer depth 1.5mm – 2.5mm |
| Applicable chain models | 415 / 420 / 428 / 520 / 525 / 530 |
| Технология обработки | 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 |
| Обработка поверхности | Color zinc plating, white zinc plating, chrome plating, blackening, sandblasting, electrophoretic painting |
| Стандарты тестирования | 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. |
Motorcycle Chain Sprocket contrast point
Eliminate the risk of tooth breakage and deformation under high torque
In view of the problem that the large-displacement motorcycle starting torque is too large, which leads to the tooth chipping of the ordinary sprocket, the motomaxsfr optimizes the induction heating frequency and accurately controls the depth of the hardened layer to ensure that the tooth root has sufficient impact resistance and toughness, and solves the problem of brittle fracture.Eliminate the abnormal noise and jitter of the chain during high-speed driving
In view of the abnormal “click” of the chain caused by poor coaxiality of cheap sprockets on the market, we strictly control the circular runout tolerance within 0.15mm. The motomaxsfr sprocket ensures that the chain runs smoothly at high speeds and solves the problem of noise nuisance and excessive vibration in the transmission system.Oversee the problem of rapid rust in harsh environments
In view of the problem that sprockets fed back by users in tropical rain forests or coastal areas are easy to rust and jam, the motomaxsfr upgraded the surface anti-corrosion process and adopted double-layer electrophoresis or thickened galvanizing treatment to solve the pain points of short storage period of common blackened sprockets, which not only affect beauty but also accelerate aging after use.Motorcycle Chain Sprocket Applicable Crowd
Motorcycle after-sales repair and accessories wholesaler
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.
Off-road motorcycle modification clubs and teams
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.
Regional motorcycle assembly plant
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.
Long-distance motorcycle enthusiasts and heavy locomotive users
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.
Instructions for use Motorcycle Chain Sprocket
Periodic visual inspection of wear
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.
Axis alignment correction during installation
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.
Correct cleaning and decontamination methods
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.
Implementation of the replacement package principle
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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ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ
Q1: Why does the front sprocket usually wear out faster than the rear sprocket?
A1: The front sprocket has fewer teeth. Under the same driving distance, the number of turns and meshing times of the front sprocket are much more than those of the rear sprocket, and the unit pressure is also greater. Therefore, it is usually recommended to check twice the frequency of the rear sprocket.
Q2: What is the difference between 45 steel and 20CrMnTi material?
A2: 45 steel is a high-quality carbon structural steel with good comprehensive performance and is commonly used in large-size rear sprockets. 20CrMnTi is alloy carburized steel with higher surface hardness and wear resistance, which is more suitable for front sprockets with concentrated stress and small volume.
Q3: What does the “428-42T” mark on the sprocket mean?
A3: “428” represents the pitch model of the chain and must be used in conjunction with the same model chain; “42T” represents that the sprocket has 42 teeth. When purchasing, you must ensure that these two parameters are consistent with the original car specifications or modification requirements.
Q4: How long can your sprocket rust-proof treatment last?
A4: Our sprockets are thickened galvanized or electrophoretic process. Under normal storage environment (dry and ventilated), the unpacked package can be kept for more than 2 years without rust. After loading and use, it depends on the maintenance situation, and can usually maintain the whole service cycle without serious corrosion.
Q5: Aluminum alloy sprocket and steel sprocket which is better?
A5: Steel sprockets have excellent wear resistance, long life, high cost performance, suitable for daily commuting and commercial use; aluminum alloy is light in weight, which can reduce unsprung mass and improve control, but has a short life. It is mainly used for racing or lightweight Scenes with extreme requirements.
Q6: Does bulk purchase support custom tooth count or marking?
A6: Support. For B2B wholesale customers, we provide OEM service, which can customize special tooth number ratio according to customer needs, and can be laser marked on the surface of the product to mark the customer’s brand Logo or specific part number.
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