Magnetic encoder
Renishaw RLS RM08
Very small non-contact rotary magnetic encoder for end-of-shaft mounting. Provides absolute or incremental output in an 8 mm body.
Key specifications
| Outer diameter | 8–8 mm |
|---|---|
| Resolution (max) | 12 bit |
| Accuracy | ±0.3° |
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
Presented on renishaw.com magnetic encoders page as an RLS product; figures from rls.si. Max 30,000 rpm. od_mm = body diameter.
Specify Motion is not affiliated with Renishaw plc. Renishaw and RLS RM08 are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a Renishaw part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Harsh-environment hollow-shaft Electric Encoder with higher shock/vibration tolerance; tested to MIL-STD-810.
| Published maximum | RLS RM08 | VLP |
|---|---|---|
| Resolution | 12 bit | 23 bit meets or exceeds |
Ultra-thin single-turn hollow-shaft capacitive encoder for general robotics and automation, with push-button calibration.
| Published maximum | RLS RM08 | VLX |
|---|---|---|
| Resolution | 12 bit | 23 bit meets or exceeds |
Extreme-temperature hollow-shaft encoder rated from -55 C to +125 C for aerospace.
| Published maximum | RLS RM08 | VLT |
|---|---|---|
| Resolution | 12 bit | 23 bit meets or exceeds |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Other magnetic encoder series
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