60% bronze powder-filled PTFE open bushing

A 60% bronze‑powder‑filled PTFE split bushing is a split‑type sliding bearing sleeve manufactured by compounding PTFE with 60% bronze powder as a reinforcing filler, followed by mixing, mold pressing and sintering, and precision finishing. Its split design allows direct assembly and replacement without disassembling the main shaft, offering excellent adaptability. By combining PTFE’s self‑lubricating properties with the high strength and superior thermal conductivity of bronze powder, this product overcomes the inherent drawbacks of pure PTFE—such as creep, poor wear resistance, and low mechanical strength—making it a high‑performance sliding bearing component ideally suited for medium‑load, continuous‑operation, dry‑run, maintenance‑free applications.

Core Performance Features

The product is equipped with High wear resistance, creep resistance, and low friction Its core advantages effectively reduce sliding wear and deformation‑induced failure. With outstanding thermal conductivity, it rapidly dissipates frictional heat, preventing overheating, thermal buildup, and seizing. It exhibits stable performance across a wide temperature range, capable of long‑term operation from –200°C to 260°C with minimal dimensional change and property degradation. Additionally, it offers excellent chemical resistance, resisting oils, moisture, and weak acids and bases, while remaining resistant to aging and corrosion. Featuring inherent dry self‑lubrication, it requires no frequent lubrication, operates quietly, prevents galling, and avoids shaft seizure. Its high mechanical strength ensures reliable performance under medium to heavy loads during continuous reciprocating motion and rotational sliding.

Main application areas

In the fields of industrial automation and construction machinery, it is used in transmission slides, connecting rods, and hydraulic/pneumatic components, providing friction reduction, wear resistance, stable operation, and reduced failure rates. In aerospace applications, it is tailored for precision lightweight mechanisms, meeting stringent requirements for extreme high‑ and low‑temperature conditions and high reliability. In medical equipment, it serves precision drive systems, ensuring clean operation free of oil contamination and dust, thereby guaranteeing stable, quiet performance. In the automotive and rail‑transit sectors, it is compatible with chassis, doors and windows, and brake‑assist sliding mechanisms, delivering vibration damping, noise reduction, and extended component life. Additionally, it is widely suited to a broad range of general‑purpose precision electromechanical devices, including motors, pumps, valves, and instrumentation.

Advantages compared to other materials

Compared with pure PTFE bushings, this product exhibits significantly improved strength, wear resistance, and creep resistance, making it less prone to deformation and loosening while delivering a longer service life. Compared with conventional metal or solid copper bushings, it requires no continuous oil lubrication; it offers excellent self‑lubrication, corrosion resistance, rust prevention, and a lower coefficient of friction, resulting in reduced operating noise. In contrast to standard plastic bushings, it boasts superior high‑temperature resistance, compressive strength, and aging resistance, making it well suited for continuous heavy‑load applications. Moreover, its split‑design facilitates easier assembly and disassembly than monolithic bushings, shortening maintenance downtime and lowering overall usage and operational costs, while expanding its applicability across a wider range of operating conditions.

Precautions for Use

Before assembly, clean the shaft surface and bore of any contaminants and burrs to prevent hard particles from causing scratches or other damage. During installation, avoid forceful hammering or excessive squeezing to prevent deformation or cracking of the bearing sleeve and ensure uniform fit clearance. This product is suitable for dry‑run and lightly lubricated operating conditions; do not expose it to prolonged high temperatures, extreme heavy loads, or highly corrosive environments. Routine maintenance does not require lubrication—simply remove surface dust and debris at regular intervals. Properly selecting the installation clearance can effectively reduce friction‑induced heat, minimize wear, and enhance equipment efficiency and the service life of the bearing sleeve.

Selection Guide

Selection is prioritized based on the equipment’s spindle outer diameter, mounting hole diameter, mating length, load requirements, and operating environment. Miniature models accommodate shaft diameters of 3–10 mm and are commonly used in precision instruments, medical devices, and small electric motors under light‑load, low‑noise conditions. Medium‑size models with shaft diameters of 12–25 mm are suited for automated systems, pneumatic and hydraulic applications, and automotive components operating under moderate loads and continuous duty. Large‑to‑medium‑size models with shaft diameters of 30–60 mm are designed for construction machinery and heavy‑duty, high‑wear applications on large production lines. Standard dimensions are kept in stock, while custom sizes and specialized operating conditions can be accommodated through non‑standard, made‑to‑order manufacturing.

Summary

The 60% bronze‑filled PTFE split bushing is a well‑balanced composite self‑lubricating sliding component that combines high strength, excellent wear resistance, corrosion resistance, and maintenance‑free operation, addressing the performance limitations of conventional plastics, pure PTFE, and metal bushings. Its split design ensures easy installation and versatile applicability, enabling reliable operation under harsh conditions such as extreme temperatures, high humidity, and dusty environments. It effectively reduces equipment wear and lowers maintenance costs while enhancing overall machine accuracy and stability, making it a cost‑effective, top‑choice component for a wide range of mechanical sliding‑drive systems.