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Representative HEIDENHAIN rotary encoder image, not the exact ID
  • Representative HEIDENHAIN rotary encoder image, not the exact ID
  • Representative HEIDENHAIN rotary encoder image, not the exact ID
HEIDENHAIN ROC/ROQ 400 Series Absolute Rotary Encoder

HEIDENHAIN ROC/ROQ 400 Series Absolute Rotary Encoder

Key specifications

  • Solid shaft for separate shaft coupling
  • Very high positioning accuracy of down to ±10"
  • Available with stainless steel housing
  • Max. operating temperature: 100 °C
  • 33 554 432 positions/rev.
  • Multiturn functionality for up to 4096 revolutions
  • Absolute rotary encoders
  • Synchro flange or clamping flange
  • Available with functional safety
  • Very high positioning accuracy
  • Housing diameter ≈ 56 mm
  • Models: ROC 413, ROC 424, ROC 424 S, ROC 425, ROC 425 F, ROQ 425, ROQ 436, ROQ 436 S, ROQ 437, ROQ 437 F

Download current specifications (May 2026 PDF)

Current catalog specifications

May 2026 HEIDENHAIN Rotary Encoders catalog, 349529-2S. This supplement applies only to the current model and ID combinations listed below.

Current models in this supplement: ROC 425 and ROQ 437 with EnDat 22, 25-bit positions per revolution; ROC 413 and ROQ 425 with EnDat 01 or SSI, 13-bit positions per revolution. Multiturn models measure 4096 revolutions. ROC 425 and ROQ 437 have ±20 arc second system accuracy; other accuracy values depend on the line count. Standard synchro versions have a 6 mm shaft; clamping versions have a 10 mm stub shaft. Protection is IP 67 at the housing and IP 64 at the shaft inlet; IP 66 at the shaft inlet is an option. General temperature and mounting conditions apply.

Synchro IDs: ROC 425 1322268-xx; ROC 413 EnDat 01 1109254-xx and SSI 1353113-xx; ROQ 437 1322273-xx; ROQ 425 EnDat 01 1109256-xx and SSI 1353117-xx. Clamping IDs: ROC 425 1322269-xx; ROC 413 EnDat 01 1109255-xx and SSI 1353114-xx; ROQ 437 1322274-xx; ROQ 425 EnDat 01 1109257-xx and SSI 1353118-xx. The historical 2009 sheets cover RIC/RIQ and PROFIBUS configurations that are not in this current supplement.

ROC / ROQ 400 current specification sheet, May 2026 (PDF)

Historical configuration specifications

From the HEIDENHAIN Rotary Encoders catalog, October 2009. Values are catalog values; confirm your unit's configuration from its ID label.

  • Series values (individual models are on the sheets): ROC 425 EnDat 2.2, 25 bit, ±20", 3.6 to 14 V; ROC 413 EnDat 2.2 (13 bit), SSI or PROFIBUS DP; RIC 418 EnDat 2.1, 18 bit; ROQ 437 EnDat 2.2, 25 bit x 4 096 revolutions; ROQ 425 EnDat 2.2, SSI or PROFIBUS DP, 13 bit x 4 096 revolutions; RIQ 430 EnDat 2.1, 18 bit x 4 096 revolutions.
  • Shaft, speed, protection and weight differ by flange type (synchro or clamping); see the sheet for the flange you have.

Documents

Pricing and lead times on request. Use Request a Quote and include the model, line count or resolution, interface, and shaft/mounting version.