# ZeroErr eCoder65 RS485 Absolute Magnetic Ring Encoder, 65 mm Bore

![ZeroErr eCoder65 RS485 Absolute Magnetic Ring Encoder, 65 mm Bore](https://parts.trymaglev.com/img/ac-zeroerr-ecoder65.webp)

ZeroErr's 65 mm bore ring encoder with a 77° arc readhead for large hollow joints (shoulder, hip, waist).

- Maglev ID: ac-zeroerr-ecoder65
- Brand: ZeroErr
- MPN: eCoder65
- Category: actuators / Joint Encoders
- Origin: CN (maker HQ, factory not confirmed)
- Maker: ZeroErr (brand, CN)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 9031.80.80.85 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: REPORTED

## Price
- 1+: $330 (distributor, 2026-10-30, https://aifitlab.com/products/zeroerr-ecoder65-magnetic-encoders; single-turn RS485 variant; backordered)

## Specifications
- Resolution: 17, 19 or 20-bit selectable
- Interface: RS-485
- Type: Axial-reading magnetic ring (65 mm ID / 84 mm OD) + 77° arc readhead; battery-backed multi-turn option
- Bore: 65 mm

## Links
- Product: https://aifitlab.com/products/zeroerr-ecoder65-magnetic-encoders
- Datasheet: none
- CAD: none

## Equivalents
- RLS AksIM-2 Off-Axis Absolute Rotary Encoder (ac-rls-aksim-2)
- Renishaw RESOLUTE Rotary Readhead, BiSS 32-bit, 150 mm Ring (ac-renishaw-resolute-ra32bba150b30f)
- KingKong MPP Series Large-Size Joint Magnetic Encoder (ac-kingkong-mpp)

## Sources
- https://aifitlab.com/products/zeroerr-ecoder65-magnetic-encoders (variants, price, <0.04° tolerance, ±5" repeatability, dimensions, stock)