| Torque, speed and time | Acceleration, reversal, dwell and repeated loads shape the winding, current and heating questions. | A duty-cycle sketch, load curve or operating points; mark continuous and intermittent demands. |
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| Supply and drive | The available voltage, current limits and drive behavior constrain the useful torque-speed range. | Supply limits and drive model, or the control hardware still to be selected. |
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| Motor envelope | Diameter, active length and bore compete with winding space, rotor support and cooling. | A sketch or CAD envelope with fixed and flexible dimensions identified. |
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| Mounting and load support | Shaft, bearings, datums and load paths determine how the active parts fit the machine. | Mating drawing, mounting concept, radial/axial loads or open support questions. |
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| Cooling and ambient | The installed heat path and operating conditions determine how thermal predictions should be checked. | Ambient conditions, duty and proposed housing/cooling contact; unknowns are acceptable. |
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| Feedback and connections | Rotor-position feedback, commutation, leads and connectors must match the drive and assembly. | Encoder/resolver or Hall requirements, drive interfaces and available cable space. |
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| Exposure and acceptance | Contamination, vibration, temperature and service expectations define the prototype evaluation. | Environment description, test priorities and any required acceptance method. |
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| Project stage and quantities | Design, tooling, samples and testing need a defined scope before pilot and production planning. | Current stage, prototype/pilot needs, future production plans and target dates where known. |
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