Skip to content
HIRAKMotion
Prototyping in India · 2026

We build the muscles of machines.

Hirak Motion designs motors, drives and actuators that turn electricity into precise, measurable motion, for robots, drones and the machines India will build next.

Start a custom actuatorExplore the platform

BLDC · PMSM · FOC drives · Planetary · Cycloidal · Strain-wave

Cycloidal reducer

Live kinematics

Input
0.00 rev
Output
0.000 rev
Ratio
11 : 1

Built for

HumanoidsQuadrupedsRobot armsExoskeletonsDronesCobotsCNC & automationProstheticsResearch labs

01Where we sit

From magnet to motion.

Every machine that moves runs on the same chain. India mines the ore and is building magnet plants, and machine builders are everywhere. The layer in between, motors, drives, gearboxes and actuators, is almost entirely imported. That is our layer.

What happens here

Motor, drive, gearbox and sensors working as one joint.

What Hirak builds

Integrated joint modules with encoders, brakes and torque sensing, characterised on our test rig before they ship.

02Platform

One motion core. Many products.

BLDC motors, servos and actuators share the same core: electromagnetics, power electronics, control firmware and gearing. We build that core once, then shape it into whatever your machine needs.

HJ · Rotary actuators

Prototyping

Hirak Joint

Quasi-direct-drive and cycloidal joint modules for legs, arms and exoskeletons.

  • Backdrivable QDD and high-ratio cycloidal
  • Dual encoders, optional brake
  • Torque from current, or a sensor

HD · Servo drives

In development

Hirak Drive

Field-oriented control drives that make any brushless motor smooth, quiet and precise.

  • FOC with current, velocity and position loops
  • CAN-FD now, EtherCAT next
  • Thermal model and fault logging

HC · BLDC & PMSM motors

Design phase

Hirak Core

Frameless and housed motors, designed to run on Indian, Japanese or ferrite magnets.

  • Outrunner and inrunner topologies
  • Magnet-flexible designs
  • Winding options per voltage

HL · Linear actuators & gearmotors

On the roadmap

Hirak Linear

Screw-driven linear actuators and compact gearmotors for automation and mobile machines.

  • Ball and lead screw stages
  • Integrated drive option
  • Sealed variants

HX · Custom

Hirak Custom: actuators designed around your machine.

Tell us the torque, speed, size and environment. We design, prototype and test the joint so you can get back to building the robot.

Taking design partners

Python SDK

Command, log and tune from a notebook.

ROS 2 driver

Drop-in for robot software stacks.

Simulation models

Measured friction and thermal parameters, not guesses.

Calibration data

Per-unit records shipped with every joint.

Software is part of the actuator. Planned for every Hirak product.

03Actuator explorer

Every joint is a trade-off. Play with it.

A higher ratio buys torque and costs speed, backdrivability and inertia. Choose a reducer and a motor and watch the joint change. This is the first conversation we have with every customer.

Reducer

25 : 1
2.0 Nm
3,000 rpm

Best for

Shock-heavy joints such as knees and hips that need a high ratio in a compact package.

Output peak torque

44.0Nm

Top speed
120rpm
Reflected inertia
×625
Efficiency
≈88%

Torque–speed envelope at the output

0501001500100200300400Output speed, rpmTorque, NmPeak 44.0 Nm120 rpm

Backdrivability

Stiff

Shock tolerance

High

Backlash

Very low

Shock tolerance: High, about 5–10× rated torque.

Idealised estimates for early exploration: a linear motor torque–speed line, typical gear efficiencies, and qualitative backdrivability. Real numbers come from the test rig, which is why we measure every joint we ship.

04Custom actuators

Every joint, a thousand iterations. We do them for you.

Off-the-shelf actuators force your robot around their limits. We design the joint around your machine instead, from the first spec sheet to a tested batch.

  1. 01

    Define

    Torque, speed, size, mass, voltage, bus and environment. We turn your machine's needs into a joint specification.

  2. 02

    Model

    Electromagnetic, thermal and gear sizing, so the first prototype is already close.

  3. 03

    Prototype

    Printed and machined iterations on our bench. A good actuator takes hundreds of them, and we do them so you don't have to.

  4. 04

    Prove

    Torque–speed and efficiency maps, thermal plateau, backlash, stiffness and life hours, measured on our test rig and shared with you.

  5. 05

    Build

    Small batches with calibration records, documentation, spares and support from India.

05Why Hirak, why India

Cheap made motion common. We'll make it trusted.

India has the engineers, the ore and the ambition. What it imports is the layer in between: the motors, drives and actuators that make machines move. We are building that layer here, and we intend to win on trust, not just on price.

50–60%

of a humanoid robot's bill of materials is its actuators

Morgan Stanley, Schaeffler and Hyundai Mobis estimates, 2026

~80%

of motors and controllers in Indian military drones trace back to Chinese supply

Zen Technologies estimate, July 2026

0

Indian makers of harmonic or cycloidal robot reducers today

Cofacto, September 2026

₹7,280 cr

India's rare-earth magnet scheme. The magnets are coming; someone has to turn them into motion

Government of India, November 2025

01

Traceable supply

Magnet-flexible designs and documented sourcing. No single-country dependency, and nothing a defence buyer can't trace.

02

Honest datasheets

Continuous torque at a stated temperature, efficiency maps, backlash and life hours, measured on our rig. Not peak numbers from a brochure.

03

Software included

Python and ROS 2 drivers, calibration data and simulation models ship with the hardware, because integration is where projects stall.

04

Engineers next door

Design, support and spares from India, in your time zone, invoiced in rupees.

06From the bench

We publish what we build, including what didn't work.

Hardware is earned one iteration at a time. This is our build log, kept in the open.

H-01

Built

Cycloidal actuator, stepper driven

Reducer
Cycloidal, 49 : 1
Motor
Stepper
Build
3D printed

Our first working joint, and the first proof that our cycloid profiles mesh and carry load.

H-02

Iterating

Cycloidal actuator, BLDC driven

Reducer
Cycloidal, 45 : 1
Motor
BLDC, FOC
Base
Berkeley Humanoid Lite

Pushed an open design to 45 : 1. Backlash was high and it would not turn. Now reworking profile clearance, pin design and print tolerances.

H-03

Next

Quasi-direct-drive joint

Reducer
Planetary, single stage
Motor
BLDC, FOC
Goal
Backdrivable, torque from current

A low-ratio joint that feels force through motor current, for legged robots and exoskeletons.

TR-1

Next

Back-to-back test rig

Method
Actuator vs. actuator
Measures
Torque, efficiency, heat
Output
Public datasheets

One actuator drives, a second brakes, load cells measure. Every number we publish will come from here.

07Roadmap

Plans, not promises.

Where we are going, in the order we intend to get there. We will update this page as each step is earned.

  1. 2026· now

    The bench

    Prototypes, a back-to-back test rig and our first honest measurements.

  2. 2027

    Hirak Dev Kit

    An actuator, a drive and Python and ROS 2 software for labs and robot builders. Our first design partners.

  3. 2028

    Hirak Core motors

    Our own magnet-flexible BLDC and PMSM line, ready for magnets made in India.

  4. 2029+

    Motion at scale

    Servo systems for Indian industry, linear actuators and gearmotors, and joints for the robots India builds.

हीरक

The name

Hirak means diamond.

In Sanskrit, hīraka is the diamond: hard, precise and built to last. That is what a joint should be. Hirak Motion is precision that moves.

08Contact

Building something that needs to move?

Robot makers, labs, drone teams and machine builders: tell us about your joint. We reply to every message.

hello@hirakmotion.com