# UHV Stepper Motor Gearheads

> UHV Planetary Gearhead for use with AML Stepper Motors

Canonical product page: [https://arunmicro.com/products/stepper-motor-gearheads/](https://arunmicro.com/products/stepper-motor-gearheads/)

UHV planetary gearheads for use with AML stepper motors to increase step resolution and torque.

## Product details

- Product code: `pg`
- Category: [Gearheads](https://arunmicro.com/products/category/gearheads/)
- Made in the UK
- UK-based support

## Order codes

| Order code | Description | Price |
| --- | --- | --- |
| pg42-005 | Planetary Gearhead for D42 motors (Ratio 5:1) | £2,774.00 |
| pg42-010 | Planetary Gearhead for D42 motors (Ratio 10:1) | £2,774.00 |
| pg42-020 | Planetary Gearhead for D42 motors (Ratio 20:1) | £3,069.00 |
| pg42-050 | Planetary Gearhead for D42 motors (Ratio 50:1) | £3,069.00 |
| pg42-100 | Planetary Gearhead for D42 motors (Ratio 100:1) | £3,069.00 |
| pg57-005 | Planetary Gearhead for D57 motors (Ratio 5:1) | £3,293.00 |
| pg57-010 | Planetary Gearhead for D57 motors (Ratio 10:1) | £3,293.00 |
| pg57-020 | Planetary Gearhead for D57 motors (Ratio 20:1) | £3,808.00 |
| pg57-050 | Planetary Gearhead for D57 motors (Ratio 50:1) | £3,808.00 |
| pg57-100 | Planetary Gearhead for D57 motors (Ratio 100:1) | £3,808.00 |

## Overview

The PG series gearheads couple directly to AML D42 or D57 stepper motors and are suitable for use in UHV environments. Primarily used for increasing resolution, torque multiplication and inertia matching. They are designed for maximum torque capacity, high efficiency and low backlash.

- Suitable for use below 1 x 10-10 mBar

- Multiple ratio options, 5:1 through 100:1

- Additional gear ratios available for special order.

- High efficiency, >94%

- Low inertia

- High precision, low backlash

- Bakeable to 200°C

Additional gear ratios available for special order. Please contact us for more information.

Gearheads cannot be dry lubricated.

## Documentation and downloads

- [PG42 Assembly Guide](https://arunmicro.com/documentation/PG42_Assembly_Instructions.pdf)
- [PG42 Datasheet](https://arunmicro.com/documentation/Datasheet_PG42.pdf)
- [PG57 Assembly Guide](https://arunmicro.com/documentation/PG57_Assembly_Instructions.pdf)
- [PG57 Datasheet](https://arunmicro.com/documentation/Datasheet_PG57.pdf)
- [RoHS](https://arunmicro.com/documentation/CE_PG.pdf)
- [PG42 CAD Models (.STEP)](https://arunmicro.com/downloads/CAD_PG42.zip)
- [PG57 CAD Models (.STEP)](https://arunmicro.com/downloads/CAD_PG57.zip)

## Related products

- [Ultra High Vacuum Stepper Motors](https://arunmicro.com/products/category/uhv-stepper-motors/): Suitable for use below  1 x 10-10 mBar. Including our D-Series Stepper Motors, Controllers and Planetary Gearheads.  
- [SMD4 Stepper Motor Drive](https://arunmicro.com/products/smd4-stepper-motor-drive/): Stepper motor drive optimised for use with AML UHV-compatible motors. Features advanced connectivity with USB, Ethernet and RS232/485 interfaces. Optional encoder module for incremental and absolute encoders
- [SMD3 Stepper Motor Drive](https://arunmicro.com/products/smd3-stepper-motor-drive/): Stepper motor drive optimised for use with AML UHV-compatible motors. Four operating modes including USB remote from a host PC and opto-isolated step and direction inputs. Continuous monitoring of motor temperature is provided with automatic shutdown to prevent motor damage.