Your Professional Axle Parts Supplier
Our goal is to become your true partner in the field of air suspension China. Shandong Paisen Machinery Manufacturing Co., Ltd. is a leading manufacturer specializing in high-precision mechanical parts, hydraulic components, and industrial machinery equipment. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
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Drum Type Optical Axle AssemblyOur Drum-Type Optical Axle Assembly represents the next evolution in heavy-duty axle technology, combining traditional drum brake reliability with advanced optical wheel speed monitoring. This fully integrated assembly features a...view more
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Wheel BearingOur Premium Wheel Bearing Kits are specifically engineered for the rigorous demands of semi-trailer applications, delivering unmatched durability and performance. Manufactured from aerospace-grade alloy steel and featuring advanced heat...view more
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Tab WasherOur High-Performance Tab Washers are precision-engineered locking components specifically designed for semi-trailer wheel end applications. These critical safety devices provide positive locking for axle nuts, preventing dangerous...view more
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Brake DrumOur High-Performance Brake Drum is precision-engineered for commercial semi-trailers, delivering unmatched durability and heat dissipation under the most demanding conditions. Manufactured from premium-grade cast iron with advanced...view more
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Brake Shoe AssemblyOur Premium Brake Shoe Assembly is engineered for commercial semi-trailers, delivering consistent braking performance and extended service life. Designed to meet the rigorous demands of heavy-duty applications, these pre-assembled brake...view more
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Shoe Repair KitOur Brake Shoe Repair Kit provides everything needed to service semi-trailer drum brake systems efficiently. This all-in-one kit contains premium quality components to restore braking performance while reducing maintenance downtime....view more
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M22 Wheel BoltOur M22 Wheel Bolts are precision-engineered fasteners designed specifically for heavy-duty semi-trailer applications. These critical components provide secure wheel mounting, ensuring safety and reliability under maximum load...view more
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M22 Flange NutOur M22 Flange Nuts are high-performance fasteners designed specifically for heavy-duty semi-trailer wheel assemblies. These precision-engineered nuts provide reliable clamping force to maintain wheel security under extreme loads and...view more
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S-Camshaft ROur Right-Hand S-Camshaft is a precision-engineered braking component designed for commercial semi-trailers. Manufactured to exacting standards, this camshaft ensures reliable brake actuation and consistent performance under heavy...view more
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S-Camshaft LOur Left-Hand S-Camshaft is a precision-engineered braking component designed specifically for commercial semi-trailers. Manufactured from premium alloy steel, this critical part ensures proper brake shoe activation on the left side of...view more
Why Choose Us
Customized Solutions
We understand that every client's needs are different, so we offer customized services. Our engineers will assist you in selecting suitable components based on your specific requirements and tailor-made design solutions according to your unique operational needs.
Production Equipment
Our company has 2 laser cutting machines, 8 stamping machines, 12 CO2 welding machines, 2 sawing machines, 1 CNC milling machine, 2 automatic welding machines, 2 welding robots, and 1 spray painting production line.
Quality Control
Our company strictly controls product quality, with rigorous inspection procedures. We use spectrometers, coordinate measuring machines, and pressure tests to ensure the durability and performance of our products.
Production Market
Our products are well-received in the market and are exported to North America, the Middle East, South Africa, and other countries and regions.

The axle parts produced by our company mainly include the following types:
Oil Seal
Our heavy-duty oil seal is engineered specifically for semi-trailer axle systems, providing superior contamination exclusion and lubricant retention in extreme operating conditions. Utilizing advanced sealing technology, this critical component prevents bearing grease leakage while blocking dirt, water, and road debris – extending drivetrain component life by up to 40%.
Tab Washer
Our high-performance tab washers are precision-engineered locking components specifically designed for semi-trailer wheel end applications. These critical safety devices provide positive locking for axle nuts, preventing dangerous loosening that can lead to wheel separation. Manufactured from hardened steel with laser-cut precision, our tab washers exceed oem specifications for durability and reliability in heavy-duty operations.
Advantages of Axle Parts
Oil Seal
Oil seal have many advantages, including:
Low levels of friction: The lubrication within the seal ensures that the seal lip does not come into contact with the rotary shaft, eliminating the risk of burning or wear.
Compact size and lightweight: Oil seals possess a small and lightweight design, which belies their strong endurance capabilities.
Reliable, rugged performance: Even under harsh conditions or extreme temperatures, these durable components will maintain their seal.
Simple construction: Easy to handle and assemble, oil seals only take a matter of minutes to replace as technicians do not have to take a machine apart.
Versatility: Standard lip seals are best for applications within dry environments, or those lacking lubrication. Oil seals can act as an alternative with increased functionality.
Tab Washer
Tab washer nut have many advantages, including:
Cost-effective: An affordable alternative to more complex solutions like conical washers or external tooth lock washers.
Corrosion resistance: Stainless steel options, akin to ss shim plates, are ideal for outdoor use.
Ease of use: Simple to install and maintain, much like a countersunk washer or a square washer.
Prevents loosening: Perfect for high-vibration environments like engines or turbines.
Enhances safety: Reduces the risk of fastener failure in applications requiring stud bolts or foundation j bolts.
Oil Seal
Oil seal can be used for a variety of purposes, including: Oil seals play a major role in mechanical assemblies. Their strength and flexibility allows them to be used in numerous industries (any automotive or industrial application that has a rotating and moving part assembly) such as gearboxes, electric motors, industrial pumps, fans, and customized equipment.
Tab Washer
Tab washer can be used for a variety of purposes, including:
Automotive: Keeps bolts secure in engines and transmissions.
Aerospace: Vital for safety in high-stakes environments.
Manufacturing: Often paired with machined washers to secure heavy machinery.
Construction: Works alongside anchor bolt manufacturers for structural integrity.
Marine applications: Stands up to corrosion and vibration in boats and ships.

Specification of Oil Seal
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Parameter |
Specification |
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Material |
Nitrile/FKM composite with 304SS case |
|
Pressure Rating |
30 PSI dynamic / 50 PSI static |
|
Shaft Speed |
Up to 2,500 RPM |
|
Service Life |
500,000 miles (80% survival rate) |
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Installation Torque |
15-20 ft-lbs with proper driver tool |
Features of Oil Seal
Triple-layer sealing technology
Primary nitrile lip (acm compound) for oil retention. Secondary dust lip (fkm material) for contaminant exclusion. Integrated steel case with anti-rotation notches.
Extreme environment resistance
-40°f to 300°f operational range. 15,000+ hour salt spray resistance (astm b117).
Performance-enhancing design
Laser-engraved directional helix pattern reduces friction by 25%. Spring-loaded tension maintains constant contact pressure.
Specification of Tab Washer
|
Parameter |
Standard Grade |
Premium Grade |
|
Material Thickness |
3.0mm |
4.0mm |
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Hardness |
RC 38-42 |
RC 40-44 |
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Temperature Range |
-40°F to 300°F |
-40°F to 400°F |
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Working Load |
25,000 lbs |
35,000 lbs |
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Surface Treatment |
Zinc Plated |
Dacromet Coated |
Features of Tab Washer
Premium material construction
Sae 1050 carbon steel, heat-treated to rc 38-42. Zinc-plated or phosphate-coated corrosion protection.
Precision engineering
Laser-cut tabs for perfect fitment (±0.002" tolerance). Multiple tab configurations (8,10,12 tab designs).
Enhanced safety design
Positive-lock "click" engagement system. Directional arrows for proper installation.
Packing and Shipping of Axle Parts
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Packing |
Tray |
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Shipping |
Shipped by road, sea, rail |
We're well-known as one of the leading axle parts manufacturers and suppliers in China. Our factory offers high quality axle parts made in China with competitive price. Welcome to contact us for quotation.
Brake Shoe Assembly, ABS Sensor Mounting Bracket, ABS Speed Sensor
