Heidenhain - Sealed Linear Encoder

Sealed linear encoders from Heidenhain are protected from dust, chips and splash fluids and are ideal for operation on machine tools.

• Accuracy grades as fine as ± 2 μm
• Measuring steps as fine as 0.001 μm
• Measuring lengths up to 30 m (to 72 m upon request)
• Fast and simple installation
• Large mounting tolerances
• High acceleration loading
• Protection against contamination

Sealed linear encoders are available with

• Full-size scale housing
  – For high vibration loading
  – Up to 30 m measuring length
• Slimline scale housing
  – For limited installation space
  – Up to 1 240 mm measuring length, up to 2 040 mm with mounting spar or tensioning elements
  

The aluminum housing of a Heidenhain sealed linear encoder protects the scale, scanning carriage, and its guideway from chips, dust, and fluids. Downward-oriented elastic lips seal the housing. The scanning carriage travels along the scale on a lowfriction guide. It is connected to the external mounting block by a coupling that compensates unavoidable misalignment between the scale and the machine guideways.

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Linear encoders for numerically controlled machine tools

Linear encoders from HEIDENHAIN for numerically controlled machine tools can be used nearly everywhere. They are ideal for machines and other equipment whose feed axes are in a servo loop, such as milling machines, machining centers, boring machines, lathes and grinding machines. The beneficial dynamic behavior of the linear encoders, their high permissible traversing speed, and their acceleration in the direction of measurement predestine them for use on highly-dynamic conventional axes as well as on direct drives.

Linear encoders with slimline scale housing

The linear encoders with slimline scale housing are designed for limited installation space. Larger measuring lengths and higher acceleration loads are made possible by using mounting spars or clamping elements.

 

	Accuracy grade	Measuring length ML	Incremental signals; Signal period	Absolute position values	Model
Absolute Linear Encoders for Safety-Related Applications	±5 μm ±3 μm	70 mm to 2040 mm	-	EnDat 2.2/22 DQ 01	LC 415 LC 495 S
Absolute position measurement • Glass scale	±5 μm ±3 μm	70 mm to 2040 mm	- 1 Vpp; 20 μm	EnDat 2.2/22 EnDat 2.2/02 DQ 01 Fanuc 05 Mit 03-04	LC 415 LC 485 LC 495 S LC 495 F LC 495 M
Incremental linear measurement with very high repeatability • Steel scale • Small signal period	±5 μm ±3 μm	50 mm to 1220 mm	1 Vpp; 4 μm	-	LF 485
Incremental linear measurement • Glass scale	±5 μm ±3 μm	70 mm to 2040 mm	1 Vpp; 20 μm TTL; to 1 μm	-  -	LS 487 LS 477

 

Linear encoders with full-size scale housing

The linear encoders with full-size scale housing are characterized by their sturdy construction, high resistance to vibration and large measuring lengths. The scanning carriage is connected with the mounting block over an oblique blade that permits mounting both in upright and reclining positions with the same protection rating.

 

	Accuracy grade	Measuring length ML	Incremental signals; Signal period	Absolute position values	Model
Absolute Linear Encoders for Safety-Related Applications	±5 μm ±3 μm	140 mm to 4240	-	EnDat 2.2/22 DQ 01	LC 115 LC 195 S
Absolute position measurement • Glass scale	±5 μm ±3 μm	140 mm to 4240 mm	- 1 Vpp; 20μm	EnDat 2.2/22 EnDat 2.2/02 DQ 01 Fanuc 05 Mit 03-04	LC 115 LC 185 LC 195 S LC 195 F LC 195 M
Absolute position measurement for large measuring lengths • Steel scale tape	±5 μm	440 mm to 28040 mm	- 1 Vpp; 40 μm	EnDat 2.2/22 EnDat 2.2/02	LC 201 - single-section LC 201 - multi-section
Incremental linear measurement with very high repeatability • Steel scale • Small signal period	±3 μm ±2 μm	140 mm to 1240 mm	1 Vpp; 4 μm	-	LF 185
Incremental linear measurement • Glass scale	±5 μm ±3 μm	140 mm bis 3040 mm	1 Vpp; 20 μm TTL; to 1 μm	- -	LS 187 LS 177
Incremental linear measurement for large measuring lengths • Steel scale tape	±5 μm	440 mm to 30040 mm Up to 72040 mm measuring length upon request	1 Vpp; 40 μm	-	LB 382 - single-section LB 382 - multi-section

Linear encoders for manually operated machine tools

For typical applications on manual machine tools such as milling machines or lathes, display steps of 10 µm or 5 µm are sufficient. Such display steps are provided by the LS 300 and LS 600 series linear encoders with an accuracy grade of ± 10 µm per meter traverse.

 

	Accuracy grade	Measuring lengths	Incremental signals Signal period	Model
Slimline	±10 μm	70 mm to 1040 mm	1 Vpp; 20 μm	LS 388C
	±10 μm	70 mm to 1040 mm	TTL, 20 μm	LS 328C
Full size	±10 μm	140 mm to 3040 mm	1 Vpp; 20 μm	LS 688C
	±10 μm	140 mm to 3040 mm	TTL, 20 μm	LS 628C

 

Incremental Linear Encoder LS 1679 with Integrated Roller Guide

The LS 1679 has been specially developed for press brakes. The basis for its high accuracy and repeatability is its precise glass scale and high-quality integral bearing. Thanks to the material of its steel track and steel roller bearing component pair it is very robust. There are many variants for connection to the machine frame, whereby the ball coupling offers the most degrees of freedom. Besides the standard resolution with 5 µm measuring step there is also a variant with 1 µm. For perfect mounting to the two C-columns there are variants with rightward and leftward cable outlets.

	Accuracy grade	Measuring length	Incremental signals Signal period	Model
Glass scale with DIADUR   graduation	±10 μm	70 mm to 470 mm	TTL; 20 μm	LS 1679