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-      28 M a r M o t i o n . H i g h - p re c i s i o n ro t a r y s t ro k e b e a r i n g s

 Mahr

Closed Guide Bush with Stop Rings

N 552 Mini Range

                  Suitability

                  Design as for N 550, with stop rings fixed on both sides for use with Mini Range
                  ball cage N 502.
                  • Minimal installation space when used with Mini Range ball cages N 502.
                  • When used in combination with shaft diameter dw ISO-h3, preloading of the

                   rotary stroke bearing is guaranteed.
                  • The stop rings ensure the cage is effectively restricted for linear and rotary

                   movements.
                  • Smooth running of the rotary stroke bearing is not impaired by the stop rings.

                  Features

                  • 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 m

                   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 is determined from the length of the guide

                   bush l3 and the length of the ball cage l2: Hmax = 2 (l3-l2).
                  • See page 37-41 for instructions on installation and servicing.

                  Material

                  • Special roller bearing steel 100 Cr 6 (1.2067 or 1.3505)
                  • Carefully heat-treated, hardness rating HRC 60–64/HV 720–815
                  • Steel stop rings

                  Special designs

                  Other dimensions or designs based on workpiece drawings are available.
                  These can also be produced using stainless steel (1.4112).

                  Order Information

                  Rotary stroke bearing consisting of:

                  Guide bush N 552/dw/d1/l1                                                     Order No. 5003 . . .
                  Ball cage N 502/dw/d1/l2                                                      Order No. 50002 . .

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