The Hardened Bush is a precision-machined, wear-resistant cylindrical component designed to minimize friction and wear between moving parts in heavy-duty mechanical systems. Crafted from high-carbon or alloy steels such as 20MnCr5 or 52100, these hardened steel bushings undergo specialized heat treatments like induction or through-hardening that achieve a tough core and a surface hardness of HRC 58–64. This heat treatment process ensures superior durability, resistance to impact, wear, and fatigue, making them ideal for high-load applications. Available in multiple types including straight, flanged, headed, and shouldered bushes, these components offer customizable sizes with tolerances aligning to ISO H7/h7 standards for precision fits. Often featuring finely ground and polished inner diameters, and optional coatings such as black oxide or phosphate for corrosion resistance, hardened bushes are versatile solutions for critical roles in automotive steering and suspension systems, construction machinery pivots, die sets, hydraulic cylinders, and agricultural equipment. Their ability to withstand repeated impacts while maintaining alignment enhances machine reliability, reduces maintenance downtime, and extends the service life of mechanical assemblies. Manufactured in compliance with industry standards like DIN 9831 and ISO 9448, hardened bushes can be supplied with OEM certifications and are available through bulk orders tailored to custom CAD drawings, demonstrating their adaptability in highly demanding industrial environments.
Key Features
| Features | Description |
|---|---|
| Material | High-carbon steel (20MnCr5, 52100), alloy, or tool steel |
| Heat Treatment | Induction or through-hardening for surface hardness of HRC 58–64 |
| Wear Resistance | High wear resistance with tough ductile core |
| Form Factors | Straight, flanged, headed, and shouldered (locating) bushings |
| Surface Finish | Ground and polished inner diameter for precision fits |
| Dimensions | ID range from 10 mm to 200+ mm, length customizable |
| Tolerances | ISO H7/h7 or as per customer specification |
| Optional Coatings | Black oxide, phosphate, anti-rust oil |
| Applications | Die sets, automotive suspension and steering, construction equipment, hydraulic cylinders |
| Standards Compliance | DIN 9831, ISO 9448, ISO 9001, IATF 16949 certified supply available |
| Attributes | Description |
|---|---|
| Base Material | Alloy or carbon steel (e.g., 20MnCr5, 52100) |
| Surface Hardness | HRC 58–64 |
| Case Depth | 0.8–2.5 mm (customizable) |
| Dimensions | ID 10+ mm; length per custom application |
| Tolerance Grade | ISO H7/h7 |
| Surface Finish | Ground & polished inner diameter; outer diameter ground or precision-turned |
| Forms Available | Straight, flanged, headed, shouldered |
| Heat Treatment Method | Induction or through-hardening |
| Optional Coatings | Black oxide, phosphate, anti-rust oil |
| Supply Options | OEM, bulk orders, custom CAD drawing-based manufacturing |
| Compliance | DIN 9831, ISO 9448, ISO 9001, IATF 16949 certified |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
Hardened bushes are typically made from high-carbon steels such as 20MnCr5 or 52100, alloy steels, or tool steels, optimized for wear resistance and load capacity.
These bushes undergo induction or through-hardening heat treatments to develop a surface hardness between HRC 58 to 64 while maintaining a tough, ductile core.
Available types include straight, flanged, headed, and shouldered bushes, each providing different mounting and locating options tailored to specific mechanical assembly requirements.
Hardened bushes are precision-ground with inner diameter tolerances conforming to ISO H7/h7, ensuring tight fits and reliable performance in critical applications.
Yes, optional stainless steel versions and protective coatings such as black oxide or phosphate treatments can be applied for enhanced corrosion resistance.
Yes, manufacturing can be customized based on customer CAD drawings, with size ranges typically from 10 mm ID upward and configurable lengths and features.
They are widely used in automotive suspensions, die sets, construction machinery pivots, agricultural equipment joints, and hydraulic cylinder wear sleeves.
Brand: elpar
Country Of Origin: India
hardened bush is a precision-machined, wear-resistant cylindrical component used to reduce friction and wear between moving parts in mechanical systems. Typically made from hardened steel or alloy materials, these bushings are heat-treated to achieve superior hardness and durability, making them ideal for high-load and high-wear applications.
Key Features:
Manufactured from hardened and ground alloy or carbon steel
High wear resistance and long service life
Suitable for rotating, sliding, or oscillating motion
Available in flanged, straight, or custom forms
Can include inner/outer grinding for precision fits
Applications:
Automotive suspension and steering systems
Construction machinery and excavators
Press tools and dies
Agricultural equipment
Industrial machinery and jigs
Benefits:
Reduces metal-on-metal contact and extends component life
Maintains tight clearances in harsh operating conditions
Supports heavy radial loads
Easy to replace and maintain
Improves reliability and efficiency of mechanical systems
hardened bush (or hardened steel bushing) is a high-strength, cylindrical component used in mechanical assemblies to absorb wear, reduce friction, and guide or locate moving parts. It is commonly used in die sets, automotive linkages, heavy-duty machinery, and pivot points where frequent motion or heavy loads are present.
These bushings are heat-treated to achieve high surface hardness while maintaining a tough, ductile core, ensuring excellent resistance to wear, impact, and fatigue.
⚙️ Material & Hardening Process
Base Materials:
High-carbon steel (e.g., 20MnCr5, 52100, or equivalent)
Alloy steels or tool steels (for heavy-duty industrial applications)
Optional: Stainless steel for corrosion resistance
Heat Treatment:
Induction or through-hardening for uniform hardness
Typical surface hardness: HRC 58–64
Case depth: Customizable based on application (typically 0.8–2.5 mm)
Surface Finish:
Ground and polished inner diameter for tight tolerances
Outer diameter may be ground or precision turned
Coatings (optional): Black oxide, phosphate, or anti-rust oil
📏 Types & Dimensions
Straight Bushings
Flanged Bushings
Headed Bushings
Shouldered or Locating Bushes
Custom Machined to Drawing
Size Range:
Inner Diameter (ID): 10 mm to 200+ mm
Length: Based on application or drawing
Tolerances: ISO H7/h7 or as specified
🛠️ Applications
Die Sets & Moulds: Guide bushings for punch & die alignment
Automotive: Suspension arms, steering pivots, control arms
Construction Equipment: Pivot points on loaders, cranes
Mining & Agriculture: High-load joints on buckets, arms, or booms
Hydraulic Cylinders: Wear sleeves for rods and pistons
✅ Benefits
Withstands repeated impact and heavy radial loads
Reduces the need for frequent part replacement
Ensures precise alignment of moving components
Operates effectively under dry, greased, or lubricated conditions
Minimizes downtime and maintenance in industrial systems
📜 Standards & Customization
Manufactured to standards like DIN 9831, ISO 9448, or customer specifications
CAD models and custom drawings available
OEM and bulk supply options with quality certifications (ISO 9001, IATF 16949)
