Preparing a quote request for actuators

A vague request gets vague answers: each manufacturer makes its own assumptions and prices no longer compare. A structured request saves back-and-forth and quickly shows which manufacturers really master the subject.

The mechanical requirement

• Continuous and peak output torque, with the duration of the peaks.
• Rated and maximum output speed.
• Duty cycle: how time splits between motion, holding position and rest.
• Available space, maximum mass and mechanical interface (flange, shaft, cable pass-through).

Electronics and control

• Available supply voltage.
• Desired encoder: single or dual, absolute or incremental, resolution.
• Communication bus: CAN, EtherCAT, RS485 or other.
• Holding brake, torque sensor, temperature sensor if needed.

The commercial frame

• Quantities: samples, pre-series, then estimated annual volume.
• Delivery place and preferred Incoterm.
• Documents expected with the offer: datasheet, declaration of conformity, test reports.
• Date by which you must decide.

Attach a drawing or sketch of the joint if you have one. Also say what is negotiable: a manufacturer may offer a cheaper standard variant if size or voltage have some margin.