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Direct-drive motors · Shenzhen, China
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Custom motors, from load case to series

Most of what we ship is modified or clean-sheet. The process is the same whether you need five units or five hundred.

Process

Five steps from enquiry to series supply

01

Load case review

Send the inertia, duty cycle, accuracy target, envelope and cabling constraints. Drawings or a filled-in questionnaire are both fine.

02

Motor and drive proposal

We come back with a motor, a drive and a feedback choice, plus the sizing calculation behind it.

03

Sample and verification

A sample is built and measured on our laser interferometer before it ships.

04

Pilot batch

Small-batch production with the measurement data recorded per unit.

05

Series supply

Repeat production with the same inspection process, or release to your own line.

What to send with the first email. Load inertia, duty cycle (how often it moves, how far, how fast), accuracy and repeatability targets, available envelope including axial height, bus voltage, ambient conditions, and the machine it goes into.
What can be customised

Six things we change most often

Winding

Voltage constant, current rating and speed range set to your bus voltage.

Stack length

Torque in the envelope you actually have, rather than the nearest catalogue step.

Flange and shaft

Bolt pattern, pilot diameter, shaft and hollow-shaft options to your interface drawing.

Feedback

Encoder or resolver, mounted on the right side of the bearing for your accuracy budget.

Sealing and cable

Connector type, cable exit, shaft seal for coolant or dust exposure.

Brake

Holding brake for vertical axes and safety-relevant positions.

Send the drawing

DXF, STEP or a hand sketch with dimensions all work. We will tell you what is achievable and what is not.

Start an enquiry
Enquiry

Describe the load case

The sizing is the valuable part. Give us the numbers and we will run it, rather than asking you to pick a part number off a chart.

Custom motor enquiry

Tell us the duty cycle, the load inertia and the space you have. We reply within one business day.

FAQ

Questions engineers ask first

What is the difference between a frameless and a housed direct-drive motor?
A frameless motor is supplied as a rotor and stator only, so your machine supplies the bearing and housing. A housed motor is a complete sealed axis with its own bearings and a mounting flange. Frameless gives the best stiffness per volume if your structure already has a suitable bearing; housed is faster to integrate.
Can you build a motor to our drawing?
Yes. Most of our shipments are custom. We work from your load case and envelope, and we release 20 to 30 new custom designs per year. Send the drawing, the inertia and the duty cycle and we will come back with a proposal.
What torque and speed range do you cover?
Rated torque from 0.16 to 800 N·m and maximum speed up to 10,000 RPM across the range. Bus voltages of 75 VDC, 120 VAC, 240 VAC, 400 VAC and 480 VAC are supported.
Do you supply the drive as well as the motor?
Yes. The motor and drive are developed and tuned together, which is why we prefer to quote them as one motion set rather than as separate components.
How is positioning performance verified?
Every unit passes 60 inspection points across incoming, in-process and finished stages, and measurement data is recorded per unit. Development units are verified on a high-precision laser interferometer with a rotary table set-up.
What certifications do you hold?
ISO 9001:2015 quality management system certification, CE conformity and RoHS material compliance across the DD motor range, plus National High-Tech Enterprise and SRDI recognition. Certificate copies are available on request.
What is the minimum order quantity and lead time?
MOQ and lead time depend on whether the motor is a catalogue part or a custom design, and on the required quantity. Send your requirement and we will confirm both in the quotation.
Do you ship outside China?
Yes. We quote ex-works and can arrange export shipping. Please tell us the destination country so freight and documentation can be included in the quotation.

Have a drawing already?

Send it with the duty cycle and we will come back with a sizing proposal.

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