Axial/radial bearings with angular measuring system  YRTM series

The measuring system can measure angles to an accuracy of a few angular seconds by non-contact, magneto-resistive means.

Features

Axial/radial bearings with angular measuring system comprise:

■ an axial/radial bearing YRTM  with a dimensional scale,an electronic measuring system and signal leads 

The electronic measuring system comprises two measuring heads, two stacks of shims and an electronic evaluation system.The signal leads for connecting the measuring heads to the electronic evaluation system can be ordered individually in various designs. The electronic measuring system will continue to be available but should no longer be used for new designs.

Bearings of series YRTM  correspond in mechanical terms to axial/radial bearings YRT  but are additionally fitted with a magnetic dimensional scale. The measuring system can measure angles to an accuracy of a few angular seconds by non-contact, magneto-resistive means

Advantages of the angular measuring system

■ allows, due to the rigid connection to the adjacent construction very good control characteristics (control stability and dynamics)and is therefore particularly suitable for axes with torque motor drive

■ offers a high maximum speed of up to 16,5 m/s

■ operates by non-contact means and is therefore not subject to wear

■ carries out measurement irrespective of tilting and position

■ has automatically self-adjusting electronics

■ has a self-centring function

■ is unaffected by lubricants

■ is easy to fit, the measuring heads are easily adjustable,

there is no need for alignment of the bearing and a separate measuring system

■ requires no additional parts

– the dimensional scale and measuring heads are integrated in the bearing and adjacent construction respectively

– the resulting space saved can be used for the machining area of the machine

■ does not give any problems relating to supply cables.

The cables can be laid within the adjacent construction directly through the large bearing bore

■ gives savings on design envelope size and costs due tothe compact, integrated design requiring fewer components.

The series bearing is based on the YRT bearing; 

It is mounted with angle measuring system on the YRT bearing, in order to accurately measure and adjust the angle of the bearing rotating and make sure the high rotation speeds. 

Measuring system is composed of transmission chain and measuring scale. It adopts pure inductive measurement principle, so the signal, its precision and the precision of measuring is very high.And by using high protective measures, the measurement system will be not disturbed in operation from external ambience, such as Smoke and Dust, mild pollution and scratches, magnetic field. It can work reliably without too much maintenance; 

The application scope is very wide. It can be applied to high precision rotary table and axis rotation, index head, military radar, aviation, aerospace and the field with the high accuracy of Angle rotation in the measuring and the test.