We hold a stock of 23 HEIDENHAIN LS series sealed linear encoders for CNC machine repair, maintenance and axis-encoder replacement. The full HEIDENHAIN ID number and serial number of every unit are listed below, so you can match your existing encoder exactly.
Condition: New Old Stock (NOS). All encoders are new and unused, in their original HEIDENHAIN packaging. They have been kept in long-term storage, so the outer cartons show shelf wear (scuffs, tape, handwritten marks). The encoders themselves have never been installed.
Product Overview
HEIDENHAIN LS series encoders are sealed incremental linear encoders for direct measurement of machine-axis position. They are widely used on machining centers, milling machines, lathes, grinding machines, EDM machines and other precision equipment.
- Replacement parts: for maintaining existing machines where the original encoder specification must be matched.
- Controller compatibility: a HEIDENHAIN CNC is not required. Compatibility depends on the encoder interface and the feedback input of the machine control.
- Match the exact ID: encoders of the same LS model can differ in signal, interpolation, reference marks, accuracy and connection details.
Current Stock – Quick Selection
Units with the same model, measuring length and HEIDENHAIN ID are grouped. Availability is subject to prior sale.
| Model | Measuring Length (ML) | HEIDENHAIN ID | Qty. |
|---|---|---|---|
| LS-176 | 640 mm | 336 959-1D | 2 |
| LS-176 | 940 mm | 336 959-1C | 1 |
| LS-176 | 1340 mm | 336 959-2E | 1 |
| LS-177 | 540 mm | 605 357-22 | 1 |
| LS-177 | 640 mm | 605 357-27 | 1 |
| LS-177 | 740 mm | 605 357-32 | 1 |
| LS-177 | 1540 mm | 605 357-74 | 1 |
| LS-186C | 440 mm | 336 963-15 | 1 |
| LS-187C | 640 mm | 526 974-06 | 1 |
| LS-187C | 840 mm | 526 974-08 | 1 |
| LS-476 | 620 mm | 329 986-B4 | 1 |
| LS-477 | 470 mm | 353 316-10 | 4 |
| LS-477 | 570 mm | 353 316-48 | 1 |
| LS-477 | 920 mm | 353 316-51 | 1 |
| LS-487 | 920 mm | 577 248-16 | 1 |
| LS-487C | 470 mm | 572 248-09 | 2 |
| LS-603C | 720 mm | 336 973-81 | 2 |
Detailed Inventory with Serial Numbers
Every physical unit is listed for exact replacement inquiries.
| No. | Model | ML | HEIDENHAIN ID | Serial No. |
|---|---|---|---|---|
| 1 | LS-176 | 640 mm | 336 959-1D | 23-290 959 |
| 2 | LS-176 | 640 mm | 336 959-1D | 23-290 963 |
| 3 | LS-176 | 940 mm | 336 959-1C | 23-087 010 |
| 4 | LS-176 | 1340 mm | 336 959-2E | 23-535 394 |
| 5 | LS-177 | 540 mm | 605 357-22 | 31-842 420 |
| 6 | LS-177 | 640 mm | 605 357-27 | 32-879 899 |
| 7 | LS-177 | 740 mm | 605 357-32 | 36-933 161 |
| 8 | LS-177 | 1540 mm | 605 357-74 | 36-585 333 |
| 9 | LS-186C | 440 mm | 336 963-15 | 19-994 481 |
| 10 | LS-187C | 640 mm | 526 974-06 | 30-794 275 |
| 11 | LS-187C | 840 mm | 526 974-08 | 37-220 396 |
| 12 | LS-476 | 620 mm | 329 986-B4 | 19-925 838 |
| 13 | LS-477 | 470 mm | 353 316-10 | 21-415 652 |
| 14 | LS-477 | 470 mm | 353 316-10 | 22-334 988 |
| 15 | LS-477 | 470 mm | 353 316-10 | 23-203 238 |
| 16 | LS-477 | 470 mm | 353 316-10 | 21-415 647 |
| 17 | LS-477 | 570 mm | 353 316-48 | 23-203 251 |
| 18 | LS-477 | 920 mm | 353 316-51 | 21-415 671 |
| 19 | LS-487 | 920 mm | 577 248-16 | 36-934 427 |
| 20 | LS-487C | 470 mm | 572 248-09 | 36-882 701 |
| 21 | LS-487C | 470 mm | 572 248-09 | 36-882 703 |
| 22 | LS-603C | 720 mm | 336 973-81 | 9-795 589 |
| 23 | LS-603C | 720 mm | 336 973-81 | 8-630 821 |
Compatibility notice: model and measuring length alone do not guarantee interchangeability. Please send a clear photo of the nameplate on your existing encoder. We recommend matching the complete HEIDENHAIN ID and confirming the electrical and mechanical specifications before ordering.
What to Check Before Replacement
- Identification: model, complete HEIDENHAIN ID, measuring length (ML) and serial number.
- Electrical: output signal / interface, interpolation or resolution, supply voltage, reference-mark configuration, connector and pin assignment.
- Mechanical: encoder profile, overall length, mounting dimensions, scanning-unit orientation, cable exit and installation space.
CNC & Drive Compatibility
HEIDENHAIN linear encoders can be used with non-HEIDENHAIN controls when the feedback interface is compatible. Compatibility should be determined from the original encoder ID and the machine’s feedback requirements, not from machine brand, CNC brand or axis travel alone.
How to Request a Quote
Send us a photo of your original encoder nameplate, or the complete HEIDENHAIN ID, model and ML. If available, also include the machine maker and model, the CNC control and the axis (X/Y/Z). We will check our physical stock for an exact match and reply with availability and price.
Stock list based on our latest physical inventory. Availability is subject to prior sale. HEIDENHAIN is a trademark of its respective owner. ACCuratech Dynamics Inc. does not imply manufacturer authorization unless expressly stated. Final compatibility must be verified before installation.