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SPROCKET

PRECISION SPROCKETS – CUSTOM
AND STANDARD SPROCKETS FOR ALL

Sprocket is a toothed mechanical component used to transmit power or motion in conjunction with a chain, commonly found in mechanical transmission systems, bicycles, motorcycles, industrial equipment, and other scenarios.

Structure And Classification Of Sprockets

Tooth Profile Design: Common tooth profiles include standard circular arc teeth, involute teeth, etc. The tooth profile needs to perfectly mesh with the chain rollers to reduce wear.
Number Of Teeth: directly affects the diameter and transmission ratio of the sprocket. The fewer teeth, the higher the contact frequency between the chain and sprocket, and the faster the wear.
Aperture: To match the installation shaft, it needs to be selected according to the nominal diameter and tolerance of the shaft.
Wheel Thickness: depends on the width of the chain and load requirements.

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TYPES OF SPROCKETS

SPROCKET SPECIFICATIONS

· By purpose: Power transmission sprockets (such as industrial equipment), conveyor sprockets (such as production lines), bicycle/motorcycle sprockets.

· According to the number of teeth: There are single row sprockets and double row sprockets (mostly used in high-power applications).

· According to installation methods: Tight fit sprocket (fixed with keyway), detachable sprocket (with flange or set screw).

Select materials and machining accuracy
Choose anti-corrosion/high-temperature resistant materials according to the environment, and precision machining of tooth surfaces is required at high speeds.

Installation compatibility verification: Ensure that the shaft hole tolerance, keyway size, and transmission system match.

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SPROCKETS APPLICATIONS AND INDUSTRIES

INDUSTRIAL PRODUCTION LINE

ELECTRIC BICYCLE

AGRICULTURAL MACHINERY

Key Points For Installation And Maintenance

Before installation, check the verticality of the chain and sprocket to avoid abnormal wear caused by deviation.

Regular lubrication (recommended lithium based grease or specialized chain oil).

Check the tension of the chain to avoid being too loose (slipping) or too tight (increasing load).

Common Problems and Solutions

Chain Jumping Teeth: Check the wear of the sprocket (sharp teeth or concave roots) or the elongation rate of the chain (>3% needs to be replaced).

Abnormal Noise: usually caused by insufficient lubrication or mismatched sprockets/chains.

Rapid Wear: The selection parameters may need to be rechecked due to excessive load or insufficient material strength.

MATERIAL SELECTION GUIDE

Corrosive Environment

Carbon steel has low cost, high strength, and requires surface heat treatment or coating for rust prevention. Suitable for general environments such as industrial machinery and agricultural equipment.

Stainless Steel

Stainless steel has strong corrosion resistance and is suitable for humid/chemical environments, but the cost is relatively high. Suitable for food machinery and marine equipment.

Nylon

Nylon/engineering plastics are lightweight, low-noise, and have low load-bearing capacity. Suitable for lightweight conveyor systems and fitness equipment.

Alloy Steel

Alloy steel has high fatigue resistance and excellent wear resistance after carburizing and quenching. Suitable for heavy machinery and mining equipment.

ADVANTAGES

As a leading brand specializing in the design and manufacturing of transmission components, PLW's sprocket products are renowned for their high precision, long lifespan, and diverse adaptability. The following is an analysis of the core advantages and applicable scenarios for choosing PLW sprockets:

Precision Technology And Material Advantages

High strength material: PLW sprockets are made of high-quality alloy steel (such as 40Cr, 20CrMnTi) or special stainless steel, and undergo processes such as carburizing, quenching, and nitriding. The surface hardness can reach HRC55-60, and the wear resistance is improved by more than 30%. They are especially suitable for high load scenarios such as mining machinery and heavy-duty transportation.

Precision tooth profile machining: Through CNC machining and tooth profile optimization design (such as involute correction of tooth profile), ensure smooth chain meshing, reduce "chain jamming" and stress concentration, and reduce transmission noise by 10% -15%.

Customized surface treatment: Provides various anti-corrosion treatments such as galvanizing, Dacromet coating, blackening, etc. to solve the problem of corrosion in humid and acidic environments, extending the service life to 2-3 times that of ordinary sprockets.

Strict Quality Control Standards

Compliant with international certification: PLW sprockets comply with strict specifications such as ISO 606 (roller chain drive standard) and ANSI B29.1, with dimensional tolerances controlled within ± 0.02mm to ensure perfect matching with various standard chains.

Full process inspection: from raw materials to finished products, implement spectral analysis, hardness testing, three-dimensional dimension verification, and dynamic balance testing to ensure that each product remains stable during high-speed operation (such as above 1000rpm).

Wide Application Adaptability

Diversified specification coverage: supports single row, double row, and multi row sprocket customization, covering mainstream chain numbers (such as # 25, # 35, # 40 to # 240), with a pitch range of 3mm~150mm, and can meet a maximum load demand of 10 tons.

Flexible installation design: Provides multiple shaft holes (through-hole, taper hole, flower key hole) and fixing methods (keyway, flange, tightening screw) to adapt to different equipment structures and shorten installation and debugging time.

Lightweight solution: Develop aluminum alloy chain wheels (tensile strength ≥ 300MPa) for fields such as drones and AGV vehicles, reducing weight by 40% while maintaining high durability.

Industry Scenario Adaptation Capability

Extreme environmental applications:
High temperature conditions: Chain wheels made of heat-resistant steel (such as 4Cr5MoSiV1) can operate stably at 350 ℃.

Food grade requirements: Stainless steel chain wheels have passed FDA certification, are non-toxic and pollution-free, and are suitable for food processing production lines.

High cost-effective alternative option: economical carbon steel sprocket (surface blackened treatment) meets general industrial scenarios, reducing costs by 20% -30% while ensuring a basic lifespan of 5000 hours.

Technical Support And After-Sales Service

Free selection service: providing technical support such as torque calculation, speed ratio optimization, failure analysis, etc., customizing transmission solutions for users to avoid faults caused by overload or improper matching.

Typical application cases
1. Logistics sorting system: PLW double row stainless steel chain wheels (# 80) are equipped with anti-corrosion chains to ensure 24-hour continuous operation with a failure rate of less than 0.1%.

2. New energy vehicle production line: Lightweight aluminum alloy sprockets reduce robot joint loads and improve assembly efficiency by 15%.

3. Offshore drilling platform: Dakro coated chain wheels are resistant to salt spray corrosion and have a lifespan of over 10 years in humid sea winds.

Choosing a PLW sprocket not only means obtaining high-precision and durable transmission components, but also means enjoying full chain technical support and scenario based solutions. Whether it is routine replacement or special requirements, PLW can provide professional choices that combine cost-effectiveness and reliability.

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Roller chains remain a reliable and cost-effective solution for mechanical power transmission, balancing power, speed, and durability based on operational demands.

Phone：+86 571 8617 7411

Mob：+86 137 3589 7880

E-mail: info@plwpt.com

Address: Hangzhou, China

Structure And Classification Of Sprockets

Key Points For Installation And Maintenance

Common Problems and Solutions

Corrosive Environment

Stainless Steel

Nylon

Alloy Steel

Precision Technology And Material Advantages

Strict Quality Control Standards

Wide Application Adaptability

Industry Scenario Adaptation Capability

Technical Support And After-Sales Service

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