The PFERD Medium-Hard Felt Polishing Point is designed for precise polishing tasks, especially when maintaining exact geometric shapes is essential. Its cylindrical shape with an end hole (ST-BO) is particularly suitable for face-down use, allowing for efficient polishing of flat surfaces.
- Shape: Cylindrical with end hole (ST-BO)
- Execution: Medium-hard (M)
- Maximum RPM: 19,000 RPM
- Optimal RPM Range: 4,000 to 8,000 RPM
- Shank Diameter: 6 mm
- Shank Length: 40 mm
- Outer Diameter: 25 mm
- Width: 30 mm
This polishing point is suitable for use on a variety of materials, including:
- Aluminium
- Brass
- Bronze
- Cast steel
- Cobalt-based alloys
- Copper
- Fibre-reinforced thermosetting plastics (GRP, CRP)
- Hardened, heat-treated steels over 1,200 N/mm² (< 38 HRC)
- Nickel-based alloys (e.g., Inconel and Hastelloy)
- Stainless steel (INOX)
- Steel materials with a hardness > 54 HRC
- Steels up to 1,200 N/mm² (< 38 HRC)
- Thermoplastics
- Titanium
- Titanium alloys
Compatibility Information: This polishing point is compatible with flexible shaft drives and straight grinders, making it versatile for various polishing applications.
Additional Details:
- Optimal Cutting Speed: For best results, use at a recommended cutting speed of 5–10 m/s. This provides an ideal compromise between stock removal rate, surface quality, thermal load on the workpiece, and tool wear.
- Recommended Polishing Pastes: Use diamond polishing pastes and polishing paste bars. When applying a different polishing paste, use a new, unused polishing tool.
- Safety Note: For safety reasons, the maximum permitted rotational speed indicated must never be exceeded.
