PMK Precision Ground and Rolled Ball Screws are designed for high-accuracy linear motion control in CNC machines, automation systems, and precision positioning assemblies. These ball screws convert rotary motion into precise linear movement with high efficiency and repeatability.

Engineered using advanced manufacturing and grinding techniques, PMK ball screws offer low friction, minimal backlash, and long service life. Available in both ground (G) and rolled (R) variants, they provide flexible solutions across precision and general-purpose motion control applications.

Key benefits

• High accuracy and repeatability — ground versions for superior lead precision.
• Smooth operation with optimized thread profiles to minimise friction and vibration.
• High efficiency due to rolling contact between balls and raceways.
• Customization options: single/double nut, flange/no-flange, right/left helix.
• Durable construction with precision raceways, controlled preload and long service life.

Applications

• CNC machining centres and precision feed drives.
• Automation and robotics where precise linear positioning is required.
• Semiconductor and inspection equipment demanding stable motion.
• Tooling, metrology and machine tools with high-speed or heavy-load feed mechanisms.

Technical highlights

• Type families: PSFI / PDFI / PSFT / PDFT / PSFE / PSFR.
• Process codes: G = Ground, R = Rolled; accuracy grades C0–C10.
• Axial clearance / preload classes: P0–P4; nut configurations: S (single), D (double), multiple nut types.
• Helix direction, flange type and lead options available per selection table.