N550 12mm x 15mm x 70mm x 20mm Guide Bush Open Standard-Range
- Guide bore diameter d1 is finely honed to ISO tolerance IT 3, Rz 0.5 - 1.5 µm depending on diameter.
- Roundness within 1/3 ISO-IT 3.
- Cylindricity within IT 1.
- Radial run-out of a shaft inserted under preloading is within 0.0005 mm.
- Tapered inside edges on both sides ensure smooth running.
- Outside diameter dB n4 with radial run-out error within IT 4, ground to guide bore diameter d1 lead-in taper on one side.
- Allows universal use.
- When used in combination with shaft diameter dw ISO-h3, preloading of the rotary stroke bearing is guaranteed.
- The ball cage can project out of the guide bush on both sides to permit longer stroke paths (note minimum contact length).
- Minimal installation space when used with Mini Range ball cages N 502.