As a specialist manufacturer, we provide split-type bushes that solve critical engineering challenges in dry-running or boundary-lubricated conditions.

Technical Architecture of Split-Type Bushes

The performance of a split-type bush is derived from its unique three-layer composite structure:

1. Steel Backing Layer: Provides the primary structural support and high mechanical strength required for heavy-duty interference fits.

2. Sintered Bronze Interlayer: A porous layer that serves as a thermal conductor and a secure mechanical bond for the sliding surface.

3. PTFE-Based Sliding Layer: A specialized mixture of PTFE and friction-modifiers. This layer creates a self-lubricating transfer film on the mating shaft, ensuring smooth operation.

Performance Specifications & Engineering Limits

Our split-type bushes are manufactured to rigorous engineering tolerances. Please refer to the following operational parameters:

• Permissible Pressure Upper Limit (Static): 250 N/mm²

• Permissible Pressure Upper Limit (Dynamic): 140 N/mm²

• Speed Upper Limit (Dry): 2.5 m/s

• Speed Upper Limit (Lubricated): 5.0 m/s

• Temperature Range: Functional from -200°C up to +280°C.

• Thermal Conductivity: 42 W/mK.

Key Applications for Split-Type Bushes

Engineers and procurement specialists select our split-type bushes for a variety of demanding industrial sectors:

• Hydraulic Systems: High-performance guide bushes for gear pumps and cylinders.

• Agricultural Equipment: Durable pivot points for harvesters, plows, and tractors.

• Material Handling: Low-maintenance joints for forklifts, cranes, and conveyor systems.

• Industrial Valves: Reliable stem bushings for butterfly and ball valves.

• Textile Machinery: Oilless operation to prevent fabric contamination.

Frequently Asked Questions (FAQs)

Q1: What are the primary advantages of using split-type bushes over solid bronze bearings?
A: Split-type bushes offer a much thinner wall section, allowing for more compact machine designs. Additionally, the PTFE-lined surface provides self-lubrication, which eliminates the need for manual greasing, reduces maintenance costs, and prevents the risk of seizure in dry conditions.

Q2: How are split-type bushes installed?
A: These bushes are designed for a press-fit installation into a housing bore. The “split” in the bush allows for a slight compression during assembly, which ensures the bearing remains securely seated through interference tension without the need for additional adhesives or fasteners.

Q3: Can these bushes be used in applications with oil or grease?
A: Yes. While our split-type bushes are engineered for dry-running, they also perform with high efficiency in lubricated environments. The presence of oil or grease can further enhance heat dissipation and extend the service life of the component.

Q4: What shaft materials and finishes are recommended?
A: For optimal performance, we recommend using ground and polished carbon steel shafts with a surface hardness of HRC 50 or higher. A surface roughness of Ra 0.4 μm or less is suggested to minimize wear on the PTFE sliding layer.

Q5: Are custom sizes available for split-type bushes?
A: Absolutely. While we stock a wide range of standard metric and imperial dimensions, we specialize in custom fabrication. We can manufacture split-type bushes, flanged bearings, and thrust washers to your specific CAD drawings or dimensions.

Why Partner With Us?

• Expert Technical Support: Our engineers assist in material selection and fitment calculations.

• Cost-Effective Procurement: Factory-direct supply ensures a competitive price-to-performance ratio.

• Quality Assurance: Each batch of split-type bushes undergoes rigorous dimensional and material integrity checks.

• Rapid Delivery: We maintain a large inventory of standard sizes for immediate dispatch.

Disclaimer

Technical Notice: All data provided is for informational purposes and based on standard engineering practices. Performance characteristics may be influenced by specific environmental factors, shaft quality, and duty cycles. This research and product range do not include conclusions or certifications for Military, Automotive, Food, Medical, Nuclear, or Aerospace airworthiness applications. The end-user is responsible for verifying the suitability of split-type bushes through independent testing for their specific use case. We exclude liability for damages resulting from improper installation or use exceeding the stated engineering limits.