Heavy-Duty Bushing Sleeve for Mechanical Assemblies
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Heavy-Duty Bushing Sleeve for Mechanical Assemblies

Bushing Sleeve is a precision-machined mechanical component used to reduce friction, support rotating shafts, and improve the stability of moving parts. It provides accurate alignment between mating components and helps extend equipment lifespan by minimizing wear. Made from materials such as steel, brass, or alloy, bushing sleeves are widely used in machinery, automotive systems, and industrial equipment. Their durability, reliability, and cost-effectiveness make them essential parts for smooth and efficient mechanical operation.
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Product Advantage

1. High Precision & Stability

Our bushing sleeve provides highly accurate shaft alignment, ensuring smooth and consistent rotation in demanding applications. The tight-tolerance structure minimizes vibration, enhances operational stability, and improves the overall lifespan of mechanical systems. With its stable performance, the sleeve helps reduce maintenance needs and keeps equipment running efficiently under continuous operation. This makes it suitable for machinery that requires precise positioning and long-term reliability.

2. Durable & Wear-Resistant Materials

Manufactured from high-strength metals, the wear-resistant bushing sleeve delivers excellent hardness and superior wear resistance. It maintains structural integrity under heavy loads, high speeds, and harsh industrial environments. The optimized surface finish reduces friction between mating components, lowering energy consumption and preventing premature failure. This impressive durability ensures consistent performance, even in equipment that operates continuously or experiences frequent start-stop cycles.

3. Wide Compatibility & Industrial Application

Our precision bushing sleeve is designed for a broad range of industrial machinery, including pumps, motors, conveyors, and automation equipment. Its universal structure fits various shaft sizes and assembly requirements, making it easy to integrate into new or existing systems. The sleeve maintains stable performance in both low-speed and high-speed environments, supporting reliable operation across multiple industries such as manufacturing, transportation, and heavy mechanical processing.

4. Flexible Customization Options

We offer complete customization based on drawings, specifications, or samples, providing customers with high-quality custom machined bushing sleeve solutions. Whether you require special dimensions, unique materials, or enhanced performance features, our machining capability ensures precise and consistent results. This flexibility allows the product to meet specialized industrial standards, making it ideal for OEM projects and tailored equipment upgrades where accuracy and compatibility are critical.

Technical Parameters


Product ParametersContent
Product NameBushing Sleeve
ApplicationIndustrial Grinder
MaterialQ235
Surface TreatmentPolishing
Weight50–80 KG
Tolerance ClassIT:7
Minimum Order Quantity≥5EA
Surface RoughnessRa:0.2–0.4 μm
Processing TechnologyCNC Machining
Production VolumeOver 1000 Pieces Per Month
Heat TreatmentQuenching and Tempering
HardnessHRC 45-50
Testing MethodCMM

Product Uses

1. Heavy-Duty Industrial Grinders

Used in large industrial grinders, the bushing sleeve supports high-load rotating shafts, reduces friction, and maintains precise alignment, ensuring stable and efficient grinding operations in continuous heavy-duty use.

2. Mining & Mineral Processing Equipment

Installed in crushers and grinding mills, the sleeve provides durable wear resistance and reliable shaft support, extending the lifespan of machinery operating under harsh, abrasive conditions.

3. Cement & Construction Material Grinders

Essential for cement production and other construction material processing, the sleeve ensures smooth rotation, reduces maintenance needs, and improves operational efficiency in large-scale grinding systems.

FAQ

1. What materials are used for the bushing sleeve?

Our bushing sleeves are made from Q25 steel, selected for its high strength, wear resistance, and durability. Combined with precise heat treatment and optional surface finishing such as polishing, the material ensures reliable performance even under heavy loads and continuous operation in large industrial grinders.

2. What is the surface finish of the sleeve?

The sleeve undergoes polishing to achieve a smooth surface, typically with a Ra 0.2–0.4 µm roughness. This reduces friction, improves lubrication distribution, and enhances operational stability, extending the service life of both the bushing and the rotating shaft in demanding grinding applications.

3. How is the bushing sleeve tested?

Each sleeve undergoes rigorous inspection, including dimensional checks, surface roughness measurement, hardness testing (HRC 45–50), and runout/concentricity verification. Optional load or wear simulations ensure the sleeve meets high durability standards, guaranteeing precise alignment and smooth operation in large-scale grinding machinery.

4. Can you provide customized bushing sleeves?

Yes, we offer custom machined bushing sleeves based on your drawings, specifications, or samples. Customization includes dimensions, material treatments, and surface finishes, ensuring compatibility with specific industrial grinders or heavy-duty machinery while maintaining high precision and long-term reliability.



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We specialize in precision machining of metal mechanical components, serving high-end equipment industries such as agriculture, construction machinery, and machine tools.

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Phone: +86-13188955360
Email: sophia@krdmanufacturing.com
WhatsApp: +86-15254212083
Add: No. 108, Shuanyuan Road, Chengyang sub-district, Chengyang District, Qingdao City, ShanDong

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