Manufacturing of sliding bushings

• Friction reduction
  Bushings reduce friction between moving components, such as shafts and cylinders. This allows hydraulic mechanisms to operate smoothly and efficiently while minimizing energy losses.

• Wear protection
  Bushings protect other system components, such as shafts or cylinders, from mechanical wear, thereby extending the overall service life of the system.

• Load distribution
  Bushings evenly distribute loads at contact points between moving parts, reducing localized stresses and protecting the mechanism from deformation or failure.

• Stability assurance
  Sliding bushings provide stability to shafts or other moving components by reducing vibrations and ensuring precise, controlled movement.

• Self-lubrication
  Some bushings made from self-lubricating materials (e.g., PTFE, bronze, oil-impregnated materials) reduce the need for additional lubrication, simplifying maintenance and lowering operating costs.

• Sealing support
  Bushings are often combined with seals to ensure tightness against fluids (oil, water) or gases at contact points between moving components.

Steel
Offers high resistance to mechanical loads and impacts. Provides good surface adhesion when combined with protective coatings such as phosphating or chrome plating.
Suitable for structural and support bushings where high strength and long service life are required.

Bronze
Excellent sliding properties and high wear resistance. Provides good heat dissipation.
Suitable for heavily loaded sliding bushings where resistance to friction and fluids is important.

Polyamide (PA)
A lightweight, self-lubricating material resistant to wear and impact. Offers good chemical resistance to greases and oils.
Suitable for bushings used under lower loads or where weight reduction is a priority.

Polytetrafluoroethylene (PTFE)
Characterized by a very low coefficient of friction. Resistant to chemicals, high temperatures, and corrosion.
Ideal for specialized sliding bushings requiring minimal friction or operation in aggressive environments.

1. Material selection and blank preparation

The appropriate material is selected based on customer specifications and hydraulic system requirements. Blanks are prepared by cutting, drilling, or casting.

2. CNC machining

CNC machines ensure the high precision required for sliding bushings so that they fit shafts and other components accurately.

Processes include:

• Turning: Forming the outer and inner diameters of the bushing.

• Drilling and milling: Creating holes, grooves, and mounting features.

• Grinding: Ensuring surface quality and dimensional accuracy.

3. Surface treatment

To improve service life and operational performance, the following surface treatments may be applied:

• Phosphating or chrome plating (for steel bushings).

• Oil or grease impregnation (for bronze bushings).

• Surface polishing (for PTFE bushings).

4. Quality control

The following parameters are inspected:

• Dimensional accuracy (micron-level tolerances).

• Surface roughness.

• Mechanical properties (stiffness, tensile strength).

5. Preparation for installation

• Final machining: Cutting and finishing of grooves or mounting holes.

• Testing: Trial installations, pressure testing, or friction testing.

• Packaging: Bushings are packed in protective packaging to prevent surface damage during handling and transport.