Sourcing industrial servo motors from China

Duty and classification for servo motors

Heading 8501 covers electric motors and generators, excluding generating sets. This guide concerns industrial servo motors. The table gives candidate motor lines rather than a universal servo code: motor construction, output and the full commodity description determine the appropriate line.

Read from the UK Trade Tariff on 30 September 2026, the selected lines carried 0% duty for goods from China. The supplied records show no anti-dumping or countervailing duty, suspension or attached import control on these lines. Import VAT is normally 20%. Suspensions elsewhere in the heading should not be assumed to cover industrial servo motors.

The resolver-and-brake line has specific speed, output and dimensional limits. Check the complete description, including its parent output band, rather than choosing it because the invoice says servo motor. Confirm the commodity code from the datasheet and drawings. For the wider heading, see electric motors. For switched reluctance designs, see our switched reluctance motor sourcing guide.

Specify the motor, feedback and drive together

Specify continuous and peak torque, the torque-speed curve, rated output, winding voltage, duty cycle, rotor inertia and cooling. Define shaft and flange dimensions, connector orientation, cable pin assignments, feedback type and brake supply. Name the intended drive and agree a loaded demonstration using that drive, with the settings recorded.

For Great Britain, confirm with the relevant authority whether the Electrical Equipment (Safety) Regulations apply to the motor's intended supply voltage and which technical documentation, declaration of conformity, CE or UKCA marking and importer identification requirements apply. The importer must ensure that instructions accompany the equipment in easily understandable English.

Do not assume the induction-motor efficiency rules apply simply because the product is called a servo. Confirm the applicable efficiency requirements with the relevant authority using the motor's construction, duty and operating method, including whether it is a brushless direct-current motor. Establish the motor construction before asking for an efficiency class.

Worked duty example

Illustrative example, not a quote: Illustrative small batch of industrial servo motors for a machine builder under 8501 52 20 89, invoiced at £2,500 free on board, with £600 of freight and insurance to the UK. The customs value is £3,100. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £3,100, so it is £620. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity and paperwork: check motor, feedback and brake model identifiers against the approved specification and reports. Match the nameplate, declaration and supplied English instructions to the shipment.

Mechanical fit: measure shaft, keyway, flange register and mounting holes against the drawing. Check shaft runout, connector clearance, seals and transit damage on arrival.

Drive and feedback: run sampled motors with the intended drive and cable. Check rotation direction, feedback recognition, homing, repeated positioning and restart behaviour.

Torque and brake: check loaded performance, temperature rise, vibration and bearing noise against agreed acceptance criteria. Test brake release and holding performance under controlled conditions.

What goes wrong

A matching flange and power label can hide a different winding, rotor inertia or feedback interface. The motor may fit but fail to initialise, hunt at low speed or overheat on the intended duty. Connector shells can look identical while their pin assignments differ. Approve the complete motor, drive and cable combination before accepting production.

Peak torque can be presented as continuous torque, and a brake supplied for holding may be unsuitable for repeated stopping. Request the test conditions behind the curves and agree the intended brake use. Record component changes and retain an approved sample; use quality inspection to compare production with that specification.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.