ESTO MOTUSLet it be set in motion.

EM–15 / Cycloidal gearbox

Small
geometry.
Serious
motion.

A compact 15:1 cycloidal gearbox built for robotics development.

Designed around a 42 mm motor format, the EM–15 is our first step toward a complete, integrated motion system.

01 / Architecture

Made to move out of the lab.

Cycloidal transmission gives the EM–15 a high reduction ratio in a compact envelope, with a robust load path suited to robotic joints and test platforms.

The architecture is intentionally modular. Printed parts make it accessible for experimentation; machined variants add repeatability, stiffness and useful torque.

02 / Variants

01

Printed

Build it yourself

Material
Engineering polymer
Torque
Development use
Availability
Release planned
02

Aluminium

Dev Edition · Batch 01

Material
CNC aluminium
Torque
2.5 Nm target (provisional)
Availability
Aluminium version in machining
03

Steel

High-load edition

Material
Hardened steel
Torque
Not specified
Availability
Planned variant

03 / Preliminary specification

Engineering values are provisional and will be updated after validation.

Reduction
15:1
Design envelope (preliminary)
42 × 42 × 36 mm
Motor interface
NEMA 17
Continuous torque target
2.5 Nm (unvalidated)
Transmission
Two-disc cycloidal
Output
Integrated bearing interface
Manufacture
Designed and machined in Germany
Status
Plastic prototype built; aluminium machining

04 / Downloads

01

STEP model

Coming with Batch 01

02

Technical drawing

Not released yet

03

Documentation

Build guide planned

Dev Edition · Batch 01

Build the next
joint with us.

The aluminium version is being machined. Pricing, release timing and reservation availability will follow physical validation. Product enquiries are not connected yet.