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Heidenhain: Incremental Rotary Encoder with Integral Bearing for Mounting by Stator Coupling ERN 1331
Heidenhain: Incremental Rotary Encoder with Integral Bearing for Mounting by Stator Coupling ERN 1331
 
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* ID#1169566-53 is the replacement of ID#735117-03 which is no longer available.

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Order #: ERN1331


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Heidenhain: Incremental Rotary Encoder with Integral Bearing for Mounting by Stator Coupling ERN 1331


Mounting variants

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 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 coupling 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 bearing 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

  • For high shaft speeds

  • No additional starting torque


Rotary encoders with integral bearing

HEIDENHAIN ERN, ECN and EQN rotary encoders with integral bearing and mounted stator coupling are characterized by simple mounting and short overall length. Possible applications range from simple measuring tasks to position and speed control on servo drives. The hollow shaft of these encoders is slid directly onto and fastened to the shaft to be measured.


ROD, ROC and ROQ rotary encoders from HEIDENHAIN have their own bearings and are sealed. They are robust and compact. These encoders are coupled by the rotor to the measured shaft through a separate coupling that compensates axial motion and misalignment between the encoder shaft and measured shaft.


ExN 1300 Features:

  • For integration in motors

  • Housing outside diameter 58 mm.

  • The stator coupling is suited for location bores with 65 mm inside diameter.

  • 1:10 taper shaft with 9.25 mm functional diameter for extremely stiff connection

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ID#: 1169566-52, 1169566-53

ID1169566-52
Part NameERN 1331 1024 62S12-30 K 0.00 .. 65B.. 40 09 .. HT RV HTL 20 01 ..

Description

ERN 1331
Incremental rotary encoder with integral bearing 
for mounting by stator coupling
Line count:              1024
Output signal:           HTL
Max. scanning frequency: 300.00 kHz
Power supply:            10 V ... 30 V
Coupling version:        without coupling
Shaft:                   Tapered shaft 1 to 10, 
                         functional diameter 9.25 
                         mm, back-off thread M10 
                         and M6
Degree of protection:    IP 40 (EN 60529)
Operating temperature:   -40/+100 °C
Electrical connection:   Plug connector, straight,
                         double-row, 12-pin, with 
                         locking mechanism and 
                         walls
Pin configuration:       D297243
Connecting direction:    Cable outlet for axial 
                         and radial use
Included part:           Mounting kit with spacer 
                         plates and central screw
Please pay attention to the product documentation!
ID1169566-53
Part NameERN 1331 2048 62S12-30 K 0.00 .. 65B.. 40 09 .. HT RV HTL 20 01 ..

Description

ERN 1331
Incremental rotary encoder with integral bearing 
for mounting by stator coupling
Line count:              2048
Output signal:           HTL
Max. scanning frequency: 300.00 kHz
Power supply:            10 V ... 30 V
Coupling version:        without coupling
Shaft:                   Tapered shaft 1 to 10, 
                         functional diameter 9.25 
                         mm, back-off thread M10 
                         and M6
Degree of protection:    IP 40 (EN 60529)
Operating temperature:   -40/+100 °C
Electrical connection:   Plug connector, straight,
                         double-row, 12-pin, with 
                         locking mechanism and 
                         walls
Pin configuration:       D297243
Connecting direction:    Cable outlet for axial 
                         and radial use
Included part:           Mounting kit with spacer 
                         plates and central screw
Please pay attention to the product documentation!

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