Scoping a Ball Screw Assembly RFQ: Diameter, Lead, Backlash and Nut Options

A buyer specifying a ball screw assembly for motion transmission should decide early whether the RFQ covers the screw and flanged nut alone or a complete, installation-ready unit. That choice drives what suppliers quote and what you must inspect on receipt.

Start with the core reference values: 32 mm shaft diameter, 10 mm lead, maximum backlash 0.03 mm, and a flanged nut. Treat these as catalog reference values, not guarantees for a supplied model, and ask each bidder to state the values it will actually deliver. In the RFQ, ask whether backlash is measured as axial play at the nut under a defined preload, and request the measurement method. Clarify whether end machining, bearing supports, lubrication, wipers, and mounting hardware are included or excluded. For a demonstration or acceptance test, define how backlash, lead accuracy, and running smoothness will be checked, and on what fixture.

Before requesting a quote, confirm with the supplier the exact scope of supply, how the 0.03 mm backlash limit is verified, whether the flanged nut interface matches your mounting, and which options and exclusions apply to the quoted configuration.