Application Overview
NACHI bearings for Machine Tools & Spindles
nachioem supplies NACHI bearings for Machine Tools & Spindles through a global supply network, with model cross-reference and selection support for distributors, repair shops and end-user plants.
Lathes, machining centers, grinders and milling machines run their spindles, ball screw supports and rotary tables on precision bearings, and those bearings set how accurate and smooth the finished cut is. Spindles run at high speed and get warm, so runout, preload and running temperature all affect surface finish and tool life. Maintenance engineers care most about getting the exact precision class, contact angle and arrangement suffix, so a replacement fits and runs like the original.
- Match the precision class (P5, P4 or higher) and the contact angle suffix exactly when replacing angular contact spindle bearings, or the spindle will lose rigidity.
- Order matched sets with the same preload and arrangement code (back-to-back, face-to-face or tandem) so the spindle's stiffness stays as designed.
- For heavy-cut spindle noses, use double-row or NU-type super-precision cylindrical roller bearings with tapered bores, which carry high radial loads and allow fine clearance adjustment.
- Check the cage material and lubrication method (grease or oil-air) against the spindle's maximum speed before you choose a replacement.
