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Rubert 318 | Microsurf Roughness Comparator – Lapping & Superfinishing | Ra 0.025–0.2 µm, N1–N4, 4 + 4 Patches
The Rubert 318 is a Microsurf comparator for lapped and superfinished cylindrical parts. It carries 4 + 4 patches covering Ra 0.025–0.2 µm, with Rz 0.4–1.0 µm for lapping and 0.4–1.6 µm for superfinishing (N1–N4). Microsurf plates are the lightweight 300 series for office and design use, and each comes in a plastic wallet with an instruction card, making the 318 convenient for drawing offices specifying finishes. For workshop use, the heavy-duty Series 100 equivalent is the 118.
Key features
- Machining method: Cylindrical Lapping + Superfinishing
- Number of patches: 4 + 4
- Ra 0.025–0.2 µm, roughness grades N1–N4
- Rz Lapping 0.4–1.0, superfinishing 0.4–1.6 µm
- Lightweight Microsurf format in a plastic wallet with instruction card
- Specifications
| Part Number | 318 |
| Brand | Rubert |
| Series | Microsurf 300 (lightweight, office and design use) |
| Machining Method | Cylindrical Lapping + Superfinishing |
| Number of Patches | 4 + 4 |
| Ra Range (µm) | 0.025 to 0.2 |
| Rz Range (µm) | Lapping 0.4 to 1.0; superfinishing 0.4 to 1.6 |
| N-Groups | N1 to N4 |
| Presentation | Plastic wallet with instruction card |
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