Optical incremental encoder
Renishaw QUANTiC
Incremental optical encoder on a 40 µm scale designed for quick installation and high speed, with digital or analogue output from the readhead. Suits general automation where coarser resolution is acceptable.
Key specifications
| Outer diameter | 52–550 mm |
|---|---|
| Ingress protection | IP40 |
| Linear speed (max) | 24 m/s |
| Resolution (finest) | 50 nm |
| Accuracy | RTLC40H-S ±5 µm/m; RTLC40-S ±15 µm/m; rotary ±4.6 to ±0.5 arc sec (RESM40) |
| Interface | RS422 digital, 1 Vpp analogue |
Summarised in our own words from Renishaw plc's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
Readhead 35 x 13.5 x 10 mm, 9 g; operating 0 to +70 °C. SDE < ±80 nm digital (linear). Rotary up to 8,800 rpm. Analogue 20 m/s (-3 dB).
Specify Motion is not affiliated with Renishaw plc. Renishaw and QUANTiC are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
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