# RLS Artos Rotary Absolute Encoder with SAR057 Ring (45 mm bore)

![RLS Artos Rotary Absolute Encoder with SAR057 Ring (45 mm bore)](https://parts.trymaglev.com/img/ac-rls-artos-sar057.webp)

Radial-reading absolute magnetic ring encoder (board-level or housed readhead) on a 57 mm ring with 45 mm bore; for large hollow joints where AksIM rings are too small.

- Maglev ID: ac-rls-artos-sar057
- Brand: RLS
- MPN: Artos readhead + SAR057 ring (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 1,474,560 counts/rev on SAR057 (datasheet gives counts, not bits)
- Accuracy: ±70 mdeg (±0.07°) system accuracy on SAR057, excluding installation eccentricity
- Max speed: up to 30,000 rpm (SAR057; depends on resolution)
- Interface: BiSS-C; SSI (board-level PCB-A or housed readhead)
- Form: off-axis ring kit: Artos readhead + SAR057 radial magnetic ring
- Sensing: magnetic, radial reading (RLS states sensor technology in DBD01)
- Supply: 4.75 V to 30 V
- Bore / ring ID: 45 mm (SAR057 ID 45H6)
- Outer diameter: 56.7 mm ring OD
- Latency: <1 µs sensor and processing latency
- Operating temp: -40 °C to +85 °C

## Links
- Product: https://www.rls.si/eng/artos-rotary-absolute-magnetic-encoder-system
- Datasheet: https://cdn.rls.si/documents/datasheets/DBD01.pdf
- CAD: none

## Equivalents
- RLS Artos Rotary Absolute Encoder with SAR081 Ring (60 mm bore) (ac-rls-artos-sar081)

## Sources
- https://www.rls.si/eng/artos-rotary-absolute-magnetic-encoder-system (specs, image)
- https://cdn.rls.si/documents/datasheets/DBD01.pdf (readhead datasheet: latency, supply, interfaces)
- https://cdn.rls.si/documents/datasheets/SARD01.pdf (SAR ring datasheet: SAR057 resolution, accuracy, dimensions, speed)