# RLS RM44 / RM58 Rotary Magnetic Shaft Encoder

![RLS RM44 / RM58 Rotary Magnetic Shaft Encoder](https://parts.trymaglev.com/img/ac-rls-rm44.webp)

44 mm or 58 mm housed magnetic encoder with its own shaft and bearings; an industrial-format output-side encoder when the joint has a stub shaft to couple.

- Maglev ID: ac-rls-rm44
- Brand: RLS
- MPN: RM44 / RM58 (configured)
- Category: actuators / Magnetic Encoders
- Origin: SI (maker HQ, factory not confirmed)
- Maker: RLS merilna tehnika d.o.o. (Renishaw associate) (brand, SI)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 9031.80.80.85 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- No public price. Request a quote via POST /api/rfq or the order pad.

## Specifications
- Resolution: up to 14 bit absolute SSI; up to 16,384 cpr incremental
- Accuracy: typ. ±0.5°; hysteresis 0.18°
- Max speed: 30,000 rpm (electrical, per datasheet tables); page states 60,000 rpm
- Interface: SSI; BiSS C; incremental RS422 / open collector / push-pull; analogue sin/cos; linear voltage
- Form: on-axis module: housed shaft encoder, Ø44 mm (RM44) or Ø58 mm (RM58) body
- Sensing: Hall (on-axis)
- Supply: 5 V ±5 % or 8 V to 26 V (24 V version)
- Bore / ring ID: n/a
- Operating temp: -40 °C to +125 °C (IP64) / -40 °C to +85 °C (IP68)

## Links
- Product: https://www.rls.si/eng/rm44-rm58
- Datasheet: https://cdn.rls.si/documents/datasheets/RM4458D01_01.pdf
- CAD: none

## Equivalents
- RLS RM22 Rotary Magnetic Modular Encoder (22 mm) (ac-rls-rm22)
- RLS RE22 Rotary Magnetic Shaft Encoder (22 mm, 4 mm shaft) (ac-rls-re22)

## Sources
- https://www.rls.si/eng/rm44-rm58 (specs, image)
- https://cdn.rls.si/documents/datasheets/RM4458D01_01.pdf (datasheet: accuracy, hysteresis, resolution, supply variants)