Page 8 of catalogue High precision bearings for combined loads of Schaeffler Technologies GmbH & Co. KG

Axial/radial bearings Axial Angular contact ball bearings
Features
Axial/radial bearings YRT, RTC and YRTSpeed and axial angular contact Ball bearings ZKLDF are ready-to-fit high precision bearings for high precision applications with combined loads. They can support radial loads, axial loads from both sides and tilting moments without clearance and are particularly suitable for bearing arrangements with high requirements for running accuracy, such as Rotary tables, face Plates, Milling heads and reversible clamps. Due to the fixing holes in the bearing rings, the units are very easy to fit. The bearings are radially and axially preloaded after fitting. The mounting dimensions of all series are identical. Axial/radial bearings are also available with an angular measuring system. The measuring system can measure angles to an accuracy of a few angular seconds by non-contact, magneto-resistive means, see page 32. For standard applications with low speeds and small operating durations – such as indexing Tables and swivel type milling heads – series YRT is generally the best suited, Figure 1. These bearings are available in two axial and radial runout accuracies. Where comparatively lower friction and higher speeds are required, RTC bearings can be used, Figure 1. For higher requirements in accuracy, these bearings are also available with restricted axial runout accuracy. For the bearing arrangements of direct drive Axes, there is the series YRTSpeed. Due to their high limiting speeds and very low, uniform frictional torque across the whole speed range, these bearings are particularly suitable for combination with torque Motors, Figure 1. Axial angular contact ball bearings ZKLDF are highly suitable for high speed applications with long operating duration, Figure 1. They are characterised by high tilting rigidity, low friction and low lubricant consumption.

With angular measuring system

Areas of application

1

2

ZKLDF YRTSpeed RTC YRT nG = limiting speed ckl = tilting rigidity

3 nG 4

Figure 1 Speed and tilting rigidity – comparison

ckl

Schaeffler Group Industrial

107 588

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