PMI Internal Ball Series

The Internal Ball Precision Ground Ball Screw series offer superior accuracy and performance reliability.

  • Screw Diameters: 14 – 100 mm
  • Lead Lengths: 3 – 20 mm
  • Stiffness: 13 – 205 kgf/um
SKU: Internal Categories: , ,

Product Description

The Internal Ball Precision Ground Ball Screws are manufactured, assembled and inspected at a 20°C constant temperature control, offer higher accuracy and reliability as compared to other ball screw manufactures. We provide Precision Ground ball screws from C0 up to C5 lead error class accuracies. Using high-grade alloy steels, our Ball Screws provide superior rigidity and long durability. Easily transmitting rotary motion to linear motion, the rotating balls inside the ball nut create a highly efficient ball requiring only 1/3 of driving torque compared to traditional ACME screws.  All of our ball screws can be provided with custom machining per print and preloaded to your specification. Custom lubrication options are available and we can easily provide machine axis “kits” paired with linear guides per machine.

Single Nut Model

FSIC Technical Bulletin


FSIC - Catalog

Double Nut Model

FDIC Technical Bulletin

FDIC - Catalog

Flange Offset Nut Model

FOIC Technical Bulletin

FOIC - Catalog

Non Flange Single Nut Model

RSIC Technical Bulletin

RSIC - Catalog

Non Flange Double Nut Model

RDIC Technical Bulletin

RDIC - Catalog