N553 guide bush, sealed with sealing rings
N553 guide bush
Model same as N550, with permanently installed thrust washers on both sides and sealing rings.
- The preload of the ball bearing guide is guaranteed in combination with shaft diameter dw ISO-h3.
- Guide bush N 553 is intended for applications that might involve dirt.
- Sealing rings prevent impurities from getting in. (The ball bearing guide runs slightly less smoothly because of the sealing rings rubbing on the shaft.)
- Safe travel limit for the ball cage.
- Sealing and stop rings fixed on both sides.
- The closed guide bush and integrated ball cage form a separate component. 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.
- Outside diameter dB n4 with radial run-out error within IT 4, ground to guide bore diameter d1, lead-in taper on one side.
- The maximum stroke path Hmax of the rotary stroke bearing is determined from the length of guide bush l3 and the length of the ball cage l2: Hmax = 2 (l3-l2).
Trieda:
Professional line
