Koyo excavator Parts Komatsu PC120-6 Slewing Bearing , Low Friction
1. Single row four point contact ball series.
2. Single-row crossed roller series.
3. Double row ball series.
4. Three-row roller series.
5. Roller and ball combination series.
6. Lightweight outline slewing ring
slewing bearing is a rotational rolling-element bearing that typically supports a
heavy but slow-turning or slow-oscillating load, often a horizontal
platform such as a conventional crane, a swing yarder, or the
wind-facing platform of a horizontal-axis windmill.
Compared to other rolling-element bearings, slewing bearings are
thin in section and are often made in diameters of a metre or more;
the slewing bearings on the Falkirk Wheel are 4 metres diameter and
fit over a 3.5 metre axle. Slewing bearings resemble oversize aircraft control surface bearings.
Slewing bearings often use two rows of rolling elements. They often use three race
elements, such as an inner ring and two outer ring "halves" that
clamp together axially.
Slewing bearings are often made with gear teeth integral with the inner or outer
race, used to drive the platform relative to the base.
Slewing bearings are generally manufactured in very large diameters. For that
reason on site inspection capabilities is necessary. Backed by
years of slewing bearing application experience and manufacturing
|Redman Type||Ball track dia.||Outer Dia.||Inner Dia.||Height||Weight||Module||Teeth No.|
|Dl (mm)||Da (mm)||Di (mm)||H (mm)||G (kg)||m||z|