The 4mm bi-directional ball screw has very thin leads.This is a significant advantage in applications that require fine-tuning and micro-positioning.ALM provides custom service,bi-directional ball screws can be manufactured according to customer requirements.
●ALM 4mm Bi-directional Ball Screw Basic Information
| Diameter | 4mm |
| Material | Gcr15(HRC60~62),9Cr18(HRC55~58) |
| Accuracy | C1,C3,C5,C7(JIS standard) |
| Axial play | 0~0.005mm(Can be zero) |
| Preload | P0,P1,P2,P3,P4 |
| Efficiency | >90% |
| Features | Clean and smooth,excellent surface finsh |
| Certificates | ISO9001:2015,CE certificate,RoHS and reach compliance |
●ALM 4mm Bi-directional Ball Screw Advantages:
More efficient and cost-effective.
Suitable for small space applications.
High positioning accuracy and long service life.
Clean and smooth and have excellent surface finish.
●ALM 4mm Bi-directional Ball Screw Intelligent Manufacturing and Inspection
●ALM 4mm Bi-directional Ball Screw Applications
4mm bi-directional ball screw has various applications.The following pictures show the common applications of the bi-directional ball screw.

Test & Measurement

Aerospace & Defense
Semiconductor equipment

Optical device

Medical industry

Dispensing equipment