Self-Lubricating Thrust Washers | Reduce Friction & Extend Service Life

Thrust Washer: Bronze and Graphite Impregnated Materials

Thrust washers are mechanical components designed to bear thrust loads. They are typically used in bearings, transmissions, and other machinery components to prevent relative motion or to provide necessary lubrication.

bronze thrust washer, bronze bushing self lubricating thrust bearing
thrust washer bearing, casting bronze thrust washer
Common Materials Used In Oilless Thrust Washers

Self-Lubricating Thrust Washer | Maintenance-Free Bearing Solutions

Most Common Self-lubricating Bronze Washers Material Selections (UNS / ASTM / SAE)

Phosphor Bronze (C51000 / C54400)

Phosphor Bronze is renowned for its exceptional fatigue strength and elasticity. It is the preferred choice for applications subjected to periodic loads and constant vibration.

•Why it’s used: High resistance to fatigue and stress relaxation, excellent spring properties, and good conductivity.
•Standard Reference: ASTM B103/B103M.
•Ideal Applications: Spring washers, electrical contact components, precision stamping parts, and light-to-medium load structures requiring high dimensional stability.

Aluminum Bronze (C95400 / C95500)

C95400 Aluminum Bronze Washers are the industry standard for heavy-duty and high-impact conditions. This alloy offers the highest strength combined with superior wear and corrosion resistance.
•Why it’s used: Exceptional toughness and resistance to galling and deformation under extreme pressure.
•Standard Reference: ASTM B148 (Standard Specification for Aluminum-Bronze Sand Castings).
•Ideal Applications: Heavy machinery, steel mills, mining equipment, and marine engineering where saltwater corrosion is a concern.
•Procurement Tip: Specify “C95400 Aluminum Bronze Washer, ASTM B148” for heavy-duty marine service.

Silicon Bronze (C65100 / C65500)

Silicon Bronze is a versatile alloy frequently used in fastener systems. It balances mechanical strength with outstanding resistance to saltwater corrosion.
•Why it’s used: High weldability and excellent corrosion resistance in coastal and marine environments.
•Standard Reference: ASTM B98/B98M or B99/B99M.
•Ideal Applications: Marine fasteners, coastal infrastructure, and projects requiring stable supply and general-purpose corrosion resistance.

Bearing Bronze / SAE 660 (C93200)

C93200 Bearing Bronze is the most common “all-purpose” material for industrial maintenance and general manufacturing. It is highly valued for its anti-friction properties and ease of machining.
•Why it’s used: Excellent anti-seizing characteristics and cost-effectiveness for MRO (Maintenance, Repair, and Operations).
•Standard Reference: SAE 660 / UNS C93200.
•Ideal Applications: General equipment maintenance, axial load support, and standard thrust washer replacements.

This Metallic Thrust Washer Is Made From Graphite-Impregnated Brass. It Is Available In Standard And Metric Sizes For Thrust Bearings

At , we understand that industrial maintenance often involves legacy equipment or unique engineering challenges. We offer comprehensive Custom Bronze Bushings and Washers services, including:
  • Non-Standard Dimensions: Custom ID, OD, and thickness to match your specific housing.
  • Advanced Machining: Oil grooves, chamfers, counterbores, and split structures.
  • Technical Support: Send us your drawings (PDF, DWG, STEP) or describe your operating conditions (load, speed, temperature, media), and our engineers will recommend the optimal UNS alloy and ASTM standard.
  • Fast Delivery: Small batch production and rapid prototyping for urgent MRO needs.
Bronze Alloy Chart, Self Lubricated Graphite Washer
Wide Selection of Standard and Custom Casting Bronze Thrust Washer
ASTM Bronze material Thrust Bearing
Graphite Impregnated Bronze Washer
Bronze Graphite Impregnated Thrust Washer Materials

Bronze Graphite Impregnated Thrust Washers – Self-Lubricating Solutions for High-Load

Bronze graphite impregnated thrust washers are widely recognized for their self-lubricating properties and outstanding performance in demanding operating conditions. Designed to control axial loads and minimize friction, these washers play a critical role in improving efficiency, reliability, and service life in mechanical systems.

  • Self-Lubricating Performance： The integration of solid graphite within the bronze matrix allows these thrust washers to operate effectively without external lubrication. This makes them ideal for dry-running conditions or applications where regular oiling and greasing are impractical. The self-lubricating design significantly reduces wear and extends component lifespan.
  • High Load Capacity：Engineered to withstand heavy axial loads, bronze graphite thrust washers deliver stable performance under high stress. Their robust construction makes them suitable for a wide range of industries, including automotive, construction equipment, and heavy machinery.
  • Excellent Corrosion Resistance：Thanks to the bronze base material, these thrust washers offer strong resistance to corrosion. They perform reliably in harsh environments exposed to moisture, chemicals, or corrosive substances.
  • Customizable Sizes and Dimensions：Available in both standard and metric sizes, these thrust washers can also be custom-manufactured to meet specific design requirements. Tailored dimensions ensure perfect fit, optimal compatibility, and maximum performance in your assembly.

Custom Services & Professional Advantages of bronzeoilless.com

As a specialized supplier of bronze thrust washers, bronzeoilless.com delivers comprehensive custom solutions tailored to specific application requirements. Our expertise, flexible manufacturing, and reliable delivery make us a trusted partner for industrial customers worldwide.

Advanced Custom Manufacturing

We produce non-standard bronze–graphite thrust washers strictly according to customer drawings and specifications.

  • Material Customization: Optimized bronze alloys and solid lubricant ratios selected to match operating conditions

  • Flexible Dimensions: From small washers (ID 20 mm × OD 25 mm × T 15 mm) to large industrial components

  • Multiple Product Forms: Thrust washers, bushings, flanged bearings, slide blocks, and other special shapes

graphite plugged bronze washer
graphite plugged bronze thrust washers

Bronze–Graphite Thrust Washers for Heavy Equipment & Industrial Machinery

In equipment such as excavators, heavy-duty vehicles, and industrial pumps, bronze–graphite thrust washers serve two essential functions: supporting axial loads and reducing friction between sliding surfaces.

Typical Application Locations：

  • Excavator Slewing Systems
    Installed between slewing ring gears and housings, thrust washers must withstand large axial overturning moments and impact loads. Bronze–graphite materials perform reliably under poor lubrication conditions and help prevent fretting wear.

  • Heavy Vehicle Gearboxes
    Used at the axial ends of gear shafts in trucks and construction machinery to prevent axial displacement while reducing friction at high rotational speeds.

  • Industrial Pumps (Centrifugal & Gear Pumps)
    Positioned at shaft or impeller ends, these washers handle axial forces while providing self-lubrication—ideal for environments with limited maintenance access or fluid washout risks.

  • Continuous Casting Machines & Metallurgical Equipment
    Operating under high temperature, low speed, and heavy load conditions, bronze–graphite thrust washers provide stable lubrication and reduce unplanned downtime.

Customization and Ordering

For engineers and procurement specialists looking to integrate these high-quality thrust washers into their projects, customization is straightforward. Dimensions, material specifications, and quantity can be tailored to meet specific operational needs. Our team provides comprehensive support throughout the design and ordering process, ensuring that each component is precisely crafted to your specifications.

Thrust washer Materials, Guide To graphite plugged bronze Thrust Bearings

Thrust washers are flat, disk-shaped components designed to support axial loads in rotating machinery.

These versatile thrust washers are employed in numerous fields including automotive, aerospace, and general industrial machinery. They are particularly beneficial in applications involving rotary and axial movement where metal-to-metal contact occurs, such as in gearboxes, pumps, and motors.

Standard Size Charts (Metric & Inch)

We maintain a large inventory of standard sizes for immediate shipment. If your required size is not listed, please contact us for a custom quote.

A. Metric (mm) Common Ranges

•Inner Diameter (ID): 6mm to 50mm (Standard increments)
•Outer Diameter (OD): 12mm to 100mm
•Thickness (T): 0.5mm to 6.0mm

B. Inch (Fractional) Common Ranges

Nominal ID (inch)
Approx. ID (mm)
Common OD (inch)
Common Thickness T (inch)
1/4″
6.35
1/2″, 9/16″
0.032″, 0.040″, 0.062″
3/8″
9.53
3/4″, 13/16″
0.032″, 0.062″, 0.093″
1/2″
12.70
1″, 1-1/16″
0.062″, 0.093″, 0.125″
5/8″
15.88
1-1/4″, 1-5/16″
0.093″, 0.125″
3/4″
19.05
1-1/2″, 1-5/8″
0.093″, 0.125″, 0.187″
1″
25.40
2″, 2-1/8″
0.125″, 0.187″, 0.250″
1-1/2″
38.10
3″, 3-1/4″
0.187″, 0.250″

Expert Consultation for Your Project

Not sure whether to choose C95400 (ASTM B148) for heavy-duty corrosion resistance or C93200 (SAE 660) for general maintenance? Our team is here to help. Provide us with your dimensions and application environment, and we will provide a technical recommendation based on North American industrial standards.
Contact today for a high-performance solution tailored to your needs.

1. Material Overview & Core Characteristics

Understanding the fundamental difference between a homogeneous alloy and a specialized composite is the first step in performance optimization.

Standard Bronze

Typically copper-tin alloys (e.g., SAE 841, CuSn6), these rely on balanced mechanical properties and external lubrication.

  • High Thermal Conductivity: Rapid heat dissipation prevents localized overheating.

  • Corrosion Resistance: Naturally resistant to many chemical and marine environments.

  • Machinability: Easy to customize with specific oil grooves or complex geometries.

Bronze–Graphite Composite

A “self-lubricating” system where solid lubricants (Graphite, $MoS_2$) are embedded into a bronze matrix.

  • Extreme Environment Adaptability: Reliable in high vacuum, radiation, or where liquid lubricants fail.

  • Maintenance-Free: Significantly reduces downtime and the cost of manual regreasing.

  • Shock Absorption: The graphite plugs help dampen mechanical vibrations and absorb impact loads.

2. Performance Comparison Matrix

The following table highlights the critical technical differences between the two materials:

Performance Index Standard Bronze Bronze–Graphite Composite Selection Guidance
Max Operating Temp ~220°C Up to 560°C Use Composite for high-heat zones.
Coefficient of Friction ($mu$) 0.10 – 0.20 0.05 – 0.15 Use Composite for higher energy efficiency.
Self-Lubrication Good (Requires oil/grease) Excellent (Solid film) Ideal for inaccessible or “clean” areas.
Load Capacity High Very High Composite is more stable under shock loads.
Service Life Medium Long Composite offers a lower Total Cost of Ownership.

3. Technical Parameters: Base Material Grades

Depending on the specific industrial demand, various bronze-graphite (JDB series) grades offer tailored mechanical properties:

Material Code Grade (Base Metal) Hardness (HB) Tensile Strength (N/mm²) Temp Range (°C) Max Dynamic Load (N/mm²)
JDB650 CuZn25Al6Fe3Mn3 >210 >750 -40 to +300 100
JDB650 S1 High-Strength Brass >250 >800 -40 to +150 120
JDB650 S2 CuAl9Fe4Ni4Mn2 >150 >800 -40 to +400 150
JDB650 S4 CuSn12 >80 >260 -40 to +400 70
JDB (HT250) Gray Cast Iron >190 >250 -40 to +400 90
JDB (Gcr15) Bearing Steel HRC >58 >1500 -40 to +400 200

4. Selection Guide: How to Decide?

Follow this logic flow when specifying thrust washers for your equipment:

Step 1: Evaluate Operating Conditions

  • Temperature: Above 200°C? – Select Bronze–Graphite.

  • Accessibility: Is frequent lubrication difficult? – Select Bronze–Graphite.

  • Speed/Load: Is the PV value high? – Select Bronze–Graphite.

Step 2: Match Base Material to Environment

  • Marine/Pump Apps: Use Aluminium Bronze (e.g., S2) for superior saltwater resistance.

  • Heavy Industrial/Low Speed: Use Bearing Steel or High-Strength Brass (e.g., S1/Gcr15) for maximum load.

  • Eco-Sensitive Apps: Specify Lead-free Eco-Alloys.

Step 3: Customization Capabilities

For non-standard machinery, custom engineering is often the best path.

  • Manufacturing: Production based on drawings (CAD/PDF).

  • Features: Inclusion of specific lubrication holes, positioning features, or flanged structures.

  • Quality: Adherence to GB/T 10446-2008 for flatness and tight tolerances.

5. Final Recommendation

Standard Bronze is a cost-effective choice for general industrial use with regular maintenance. Bronze–Graphite Composite is the premium solution for high-temperature, heavy-load, or maintenance-free “set-and-forget” applications.

When in doubt, calculate the PV Value (P = Pressure, V = Velocity) of your application to ensure the chosen grade stays within its safety margin.

    High-performance bronze thrust washer for heavy machinery