Global Sliding Bearing Selection Guide

Global Sliding Bearing Selection Guide

High-Performance Self-Lubricating Bronze Bushing Solutions & Technologies. Minimize downtime, extend service life, and reduce costs for dynamic applications.

POM (MoS2)/lubrication pockets Steel copper-plated or tin-plated Sintered bronze bushing

Global Sliding Bearing Selection Guide

Technical Performance Comparison & Engineering Data
Compliant with DIN 1494 / ISO 3547 Standards

1. Comparative Performance Matrix

Bearing Type Material Structure Lubrication Mode Dynamic Load Capacity Maximum Sliding Speed Operating Temperature Friction Coefficient (μ)
SF-1 / SF-1D PTFE Composite + Steel/Bronze Backing Dry Running 140 N/mm² 5.0 m/s +280°C 0.03 – 0.18
SF-2 / SF-2Y POM Composite + Steel Backing Grease Lubricated 70 N/mm² 2.5 m/s +130°C 0.05 – 0.25
JDB Series Solid Bronze Alloy with Embedded Lubricants Self-Lubricating 100 N/mm² 10.0 m/s +400°C < 0.16
FB-090 / FB-092 CuSn8 Wrapped Bronze Grease or Oil Lubricated 75 N/mm² 2.5 m/s +350°C 0.05 – 0.12
JF-800 Steel-Backed Bimetal + Bronze Alloy Grease or Oil Lubricated 140 N/mm² 2.5 m/s +250°C 0.04 – 0.12
Turned Steel Bushings Hardened 20MnV6 Steel Oil Lubricated 150 N/mm² 0.6 m/s +250°C 0.05 – 0.25

2. Bearing Series Overview & Engineering Characteristics

SF-1 / SF-1D — PTFE Composite Bearings

Wrapped PTFE-lined composite bearings designed for dry-running applications with minimal maintenance requirements. Commonly used in hydraulic systems, shock absorbers, pumps, and oscillating motion assemblies.

Key Characteristics

Property Value
Maintenance Requirement Maintenance-Free
Static Load Capacity 250 N/mm²
Dynamic Load Capacity 140 N/mm²
Maximum Sliding Speed 5.0 m/s
Maximum PV Value (Dry) 4.3 N/mm²·m/s
Operating Temperature -195°C to +280°C

Typical Applications

  • Hydraulic cylinders
  • Automotive dampers
  • Pumps and motors
  • Agricultural equipment

SF-2 / SF-2Y — POM Composite Bearings

POM-based composite bushings developed for boundary-lubricated conditions. Suitable for environments exposed to dust, vibration, and intermittent lubrication.

Key Characteristics

Property Value
Maintenance Requirement Low Maintenance
Static Load Capacity 250 N/mm²
Dynamic Load Capacity 70 N/mm²
Maximum Sliding Speed 2.5 m/s
Maximum PV Value 22 N/mm²·m/s
Operating Temperature -40°C to +130°C

Typical Applications

  • Automotive chassis systems
  • Construction machinery
  • Steering assemblies
  • Industrial pivots

JDB Series — Solid Lubricant Bronze Bearings

Solid bronze bearings with embedded graphite or MoS₂ lubricating inserts. Designed for high-load, low-speed, and elevated-temperature operating conditions.

Key Characteristics

Property Value
Maintenance Requirement Maintenance-Free
Base Material Hardness > 210 HB
Dynamic Load Capacity 100 N/mm²
Maximum Sliding Speed 10.0 m/s
Friction Coefficient < 0.16
Maximum Operating Temperature +400°C

Typical Applications

  • Metallurgical equipment
  • Continuous casting machinery
  • Heavy lifting systems
  • Furnace and high-temperature mechanisms

FB-090 / FB-092 — Wrapped Bronze Bearings

CuSn8 phosphor bronze bearings with lubrication pockets for grease retention. Suitable for contaminated environments and moderate-speed operation.

Key Characteristics

Property Value
Maintenance Requirement Low Maintenance
Static Load Capacity 120 N/mm²
Dynamic Load Capacity 75 N/mm²
Maximum Sliding Speed 2.5 m/s
Material Hardness 90 – 120 HB
Operating Temperature -200°C to +350°C

Typical Applications

  • Lifting machinery
  • Agricultural systems
  • Material handling equipment
  • Construction machinery

JF-800 — Bimetal Bearings

Steel-backed bimetal bushings with CuPb10Sn10 bronze sliding layer, combining fatigue resistance with strong load-carrying capability.

Key Characteristics

Property Value
Maintenance Requirement Low Maintenance
Static Load Capacity 250 N/mm²
Dynamic Load Capacity 140 N/mm²
Maximum Sliding Speed 2.5 m/s
Alloy Hardness 70 – 100 HB
Operating Temperature -40°C to +250°C

Typical Applications

  • Truck suspension systems
  • Gearbox assemblies
  • Engine balancing systems
  • Heavy-duty industrial machinery

Turned Steel Bushings

Precision-machined and hardened steel bushings manufactured from 20MnV6 steel for applications requiring tight tolerances and high structural rigidity.

Key Characteristics

Property Value
Maintenance Requirement Continuous Lubrication Required
Static Load Capacity 250 N/mm²
Dynamic Load Capacity 150 N/mm²
Maximum Sliding Speed 0.6 m/s
Surface Hardness 58 – 62 HRC
Operating Temperature -100°C to +250°C

Typical Applications

  • Excavator joints
  • Mining equipment
  • Heavy-load pivots
  • Precision mechanical assemblies

3. Engineering Design & Installation Recommendations

A. Shaft Material & Surface Requirements

Contact Pressure Recommended Shaft Material Minimum Hardness Surface Roughness (Ra)
Up to 24.5 N/mm² Carbon or Alloy Steel (C45, 42CrMo4) ≥ HB 150 < 1.6 μm
24.5 – 49.0 N/mm² Induction Hardened or Carburized Steel ≥ HB 250 < 0.8 μm
49.0 – 98.0 N/mm² Nitrided or Hard Chrome-Plated Steel ≥ HRC 50 < 0.8 μm

B. Recommended Fits & Tolerances (ISO 3547)

Bearing Category Housing Bore Tolerance Shaft Tolerance Installed Inner Diameter
PTFE / Wrapped Bronze Bearings H7 f7 or h8 H9
POM Composite Bearings H7 h8 D9
Solid Bronze Bearings (JDB) H7 f7 or h6 R6 / E7

C. Installation & Maintenance Recommendations

Chamfer Design

  • Housing chamfer recommendation: minimum 1.5 mm × 15°–45°
  • Shaft lead-in chamfer recommendation: 5 mm × 15° with rounded edges

Press Fitting

  • Use a dedicated installation mandrel or hydraulic press during assembly
  • Avoid direct hammering or impact loading on the bearing surface
  • Apply grease to the outer diameter before installation to reduce scoring risk

Thermal Shrink Assembly

For solid bronze bearings with outer diameters exceeding Ø130 mm, thermal shrink fitting using dry ice or liquid nitrogen is recommended to simplify installation and reduce assembly stress.

Contamination Protection

Although self-lubricating bearings demonstrate relatively high tolerance to dust and particulate contamination, additional sealing and initial grease application can significantly improve service life and wear stability.

Metal Bushing (Lubricated Metal) -Self-Lubricating Bushing Materials

Bushings are specialized, self-lubricating metal components widely utilized across various industries due to their durability and low maintenance requirements. Self-lubricating metal bushings are engineered to function without additional lubrication in numerous applications, thereby minimizing maintenance needs. These bushings are available in various series and configurations, such as flanged bushings and split bearings, to meet specific application requirements.

Metal-Polymer Anti-Friction Plain Bearings

Metal-Polymer Composite Self-lubricating Bushing Material

Steel Back + Porous Bronze Sinter + PTFE

Metal-Polymer Plain Bearings Grease Lubricated
Metal-Polymer Plain Bearings Grease Lubricated
Bronze Bearings made of CuSn8 with Lubrication Indents
Bronze Bearings and Bronze Sleeve Bushings made of CuSn8 with Lubrication Indents
Cast Bronze Bushings with Solid Lubricant Inserts
Cast Bronze Bearings with Solid Lubricant Inserts
Bimetal Plain Bearings
Steel + CuPb10Sn10 with indents
Steel Bronze Bushing
Steel Backing and Bronze Overlay
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lubrication-free Bearing bushing products

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