HARDINGE SUPER-PRECISION SPINDLE The Hardinge super-precision pre loaded ball bearing spindle is mounted in the solid one-piece totally enclosed headstock housing for maximum rigidity and sustained accuracy. adaptors that introduce costly inaccuracies. The rigidity provided for sustained accuracy also prOVides the proper support for work when cutting with carbide tooling. Your operators will enjoy the carefree operation of the Hardinge preloaded ball bearing spindle. The bearings An excl usive feature of the Hardinge super-precision headstock is an electrically interlocked spindle lock pin.
The new type lock pin eliminates any chance of starting the main drive motor with the lock pin engaged. reqUire no adjustment and are permanently lubricated to operate continuously at all speeds without attention. Preloading eliminates all end play, radial play and assures the turning of true pieces. The headstock spindle drive belt can be changed with- out removing the spindle or disturbing the precision pre-loaded ball bearings. The collet seats directly In the hardened and precision ground spindle. thus eliminating troublesome sleeves and 6