Self-Lubricating Graphite Bush Bronze Oilless Bushing with SGS EU Standards

SPB solid lubricated bearings are engineered with a base material of high-strength brass or tin bronze. Their core characteristic is the ability to operate reliably for extended periods under oil-free or simple water-lubricated conditions. This unique capability makes them exceptionally suitable for demanding, heavy-duty, and low-speed applications where forming a conventional oil film is challenging. They excel in environments involving complex motion patterns, including reciprocating, rotating, swinging, and intermittent motion, ensuring stable performance and reduced maintenance where traditional lubricants fail.

product details

Product Introduction

SPB Solid Lubricated Bearings are engineered with high-strength brass or tin bronze base materials that simultaneously facilitate smooth linear motion and transmit torque in rotary motion. Their key advantage lies in a uniquely compact and space-saving design, which facilitates integration into applications with severe spatial constraints. Engineered for exceptional rigidity and minimal runout, these bearings deliver outstanding positional accuracy and load capacity, ensuring reliable operation even at high speeds and under demanding conditions. Furthermore, the design incorporates external lubrication ports for both rotating and linear sections, significantly simplifying maintenance, reducing downtime, and extending service life. This combination of precision, durability, and ease of use makes SPB bearings a versatile and robust solution for a wide range of industries, from advanced robotics and automotive manufacturing to aerospace systems.

Features

1. SPB bearings feature high strength, high hardness, and exceptional load-bearing capacity.

2. SPB high load capacity makes them suitable for heavy-duty applications such as construction machinery and mining equipment.

3. SPB bearings offer wear and corrosion resistance, with excellent resistance to media including acids, alkalis, and seawater.

4. SPB bearings deliver superior shock absorption performance, ideal for high-frequency vibration or impact load conditions.

5. SPB bearings suitable for environments where refueling is not possible, high temperatures, vacuum, or pollution is sensitive built to withstand harsh operating conditions.

6. SPB bearings ‌have low friction coefficients as low as 0.16 and enhanced wear resistance, they improve equipment operational accuracy.

Application

SPB bearings are suitable for construction machinery such as excavator shafts Punch Forging Machinery and crusher bushings Ships and marine equipment: propeller bearings, deck machinery.

Parameters

Material	CuZn25Al5Mn4Fe3
Density	8g/cm3
abrasion coefficient	0.03～0.20
Tensile Strength	>750N/mm2
Yield strength	>340 N/mm²
Hardness	>210HB
Max Dynamic Load	98N/mm2
Max speed	Dry Lubrication 0.3m/s; Oil Lubrication 1.0 m/s
Friction	Oil Lubrication 0.03~0.08
Friction	Dry Lubrication 0.12~0.16
Working temperature	-40~+300°C