All CNC Service & Sales is an authorized service provider of Heidenhain components and products. We are fully trained and qualified in Heidenhain maintenance servicing and repairs and also specialize in new, exchanged and repaired parts. 3-day turnaround is our standard, but "Rush-Service" is also available upon request.

Rotary Encoders

In rotary encoders with integral bearing and stator coupling, the graduated disk of the encoder is connected directly to the shaft to be measured. The scanning unit is guided on the shaft via ball bearings, supported by the stator coupling. During angular acceleration of the shaft, the stator coupling must absorb only that torque resulting from friction in the bearing, thereby minimizing both static and dynamic measuring error. Moreover, the coupling mounted on the stator compensates for axial motion of the measured shaft.

Other benefits of the stator coupling are:

• Simple mounting
• Short overall length
• High natural frequency of coupling
• Hollow-through shaft possible

Rotary encoders with integral bearing that are conceived for separate shaft couplings are designed with a solid shaft. The recommended coupling to the measured shaft compensates radial and axial tolerances. Angle encoders for separate shaft couplings permit higher shaft speeds.

Rotary encoders without integral bearings operate without friction. The two components - the scanning head and the scale disk, drum, or tape - are adjusted to each other during assembly.

The benefits are:

• Large diameter of hollow shaft
• High shaft speeds
• No additional starting torque

Linear Encoders and Scales

Sealed linear encoders from HEIDENHAIN are ideal for use on machine tools. Aluminum housing and elastic sealing lips protect the scale, scanning carriage and guideway from chips, swarf, dirt and splash water The scanning carriage travels in a low-friction guide within the scale unit. It is connected to the external mounting block by a coupling that compensates for unavoidable misalignment between the scale and the machine guideways.

Sealed linear encoders are available with full-size scale housings for high resistance to vibration (up to 30 m measuring length), as well as slimline scale housing for limited installation space up to 2040 mm measuring length.

Probes

3-D touch probes from HEIDENHAIN were conceived for use on machine tools – in particular, milling machines and machining centers. 3-D touch probes help to save costs: NC controls can automatically run setup, measuring and verification tasks – and most controls can also run them under program control.

Control Parts

The interface electronics from HEIDENHAIN adapt the encoder signals to the interface of the subsequent electronics. They are used when the subsequent electronics cannot directly process the output signals from HEIDENHAIN encoders, or if additional interpolation of the signals is necessary.