KDA 3.1-100-3-DYI-W1

Product Description:

The KDA 3.1-100-3-DYI-W1 spindle drive comes from the KDA Spindle Drives series by Bosch Rexroth Indramat. It’s built with a 3.1 mm nominal diameter and uses a 3 mm spindle pitch, giving it consistent, controlled linear motion for applications needing tighter tolerances. Construction uses case-hardened alloy steel, ground to meet long-wear demands in setups that don’t shut down often.

This model includes a DYI internal circulation nut, which moves the balls smoothly and holds up under repeat cycles without jamming. The stroke length is 100 mm, and it follows the W1 end machining style, which is usually standard single-end with profile dimensions matching most compact setups. Temperature performance holds steady between -20°C to +80°C, so it’s cleared for operations in environments with colder starts or moderate heat.

Precision grade is usually C7, though depending on manufacturer tweaks it might be upgraded to C5. That makes it useful in tasks where movement has to stay tight but cost and material savings matter too. Dynamic and static load ratings are in line with the rest of the KDA 3.1 family—typically landing around 2.8–4 kN for dynamic and 4–7 kN for static, though actual values shift slightly depending on exact assembly. The estimated ball diameter inside sits between 1 to 2 mm, which keeps things balanced between torque response and smooth glide. Once mounted, the KDA 3.1-100-3-DYI-W1 gives stable feed across controlled strokes and keeps wear spread out across the nut surface, reducing the risk of sudden breakdowns or uneven backlash. Strong, straightforward, and built for repeat use, it performs cleanly in industrial automation tasks where reliability matters more than showy features.