# Apex Dynamics AB042 Helical Planetary Gearbox, 5:1

![Apex Dynamics AB042 Helical Planetary Gearbox, 5:1](https://parts.trymaglev.com/img/ac-apex-ab042-005.webp)

Small 42 mm helical planetary for light servo axes and small joints; 22 N·m nominal at 5:1.

- Maglev ID: ac-apex-ab042-005
- Brand: Apex Dynamics
- MPN: AB042-005-S1-P2 (motor adapter per order)
- Category: actuators / Precision Planetary Reducers
- Origin: TW (maker HQ, factory not confirmed)
- Maker: Apex Dynamics, Inc. (brand, TW)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8483.40.50
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

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

## Specifications
- Ratio: 5:1
- Nominal output torque T2N: 22 N·m
- Backlash: P1 ≤3 / P2 ≤5 arcmin
- Frame size: 42 mm
- Stages: 1
- Mass: 0.6 kg

## Links
- Product: https://apexdynamicsusa.com/product/ab-series-high-precision-planetary-gearboxes/
- Datasheet: https://apexdynamicsusa.com/wp-content/uploads/2026/08/ababr-catalog.pdf
- CAD: none

## Sources
- https://apexdynamicsusa.com/wp-content/uploads/2026/08/ababr-catalog.pdf (AB performance table and ordering code)
- https://apexdynamicsusa.com/product/ab-series-high-precision-planetary-gearboxes/ (product page)