Rothe Erde Slewing Ring Bearing

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Most Rothe Erde slewing bearings for tunnelling machines are used as cutter head or erector bearings. Decisive for the selection of a suitable bearing design, that is a four-point contact ball bearing, a cross roller bearing or a three-row roller bearing, as a suitable design are the load spectra with the axial forces (compressive or traction forces), the radial forces (from weight and/or radial forces), and the resulting tilting moments from eccentric axial or eccentric radial forces. Further criteria are the effective torques, the revolutions per minute, the operating times as well as the life time and customer requirements. Rothe Erde rings The rings (forging as seamless rolled ring up to the final production stage) for the own slewing bearing production, for the sealing rings and other applications are produced in our plants. Sealing rings Any dirt penetrating into the slewing bearing will significantly shorten its life time. This is why bearings installed in tunnelling machines are protected by sealing systems which have been specially designed by the tunnelling machine manufacturers. It normally consists of a system of rings which hold the seals in place and/or provide the sliding surfaces for the seals. Fastening bolts The bolt connection greatly influences the functional safety of a slewing bearing. Therefore, the fastening bolts must be adequately dimensioned and preloaded in a manner to maintain the bolt preload throughout the complete life time of the bearing.

V5069A06 Slewing Ring Bearing with four point contact ball type

Standard Class 0
Radial One-way Clutch

high precision 61-MNR1177.86/209 slewing bearing

Bearing Steel No
Standard Grease Cylindrical Bore Set

Aerial working platform slew ring

Type B (Standard Typ Momi removing
Metric System Radial

62M3937.05.631 Industrial Slewing Bearings

10 mm 17 mm
21 mm 30.5 mm

single row four point slewing bearing

52.5 kN 53.5 mm
5.15 kg 32.8 kN

Solar tracking system slewing ring bearing

Bearing Steel With steel plate cov
No SH33M

Foundation Treatment Machinery Swing Bearing

7 Days Flanged Pilot Type
Square Type 4

lazy susan turntable slewing ring bearing

37.4 mm 14 kN
115 mm 7.88 kN

Stainless steel lazy susan turntable bearing

34.8 kN 5.118 Inch | 130 Mil
130 mm Brass