THESE TOUGH, BRIDGEPORT RETROFIT KITS OFFER MANY CONVENIENT FEATURES:
• High-Capacity, Long-Life: Each ball nut assembly of the Rockford preloaded unit has one
   circuit of 3 1/2 turns of ball bearings. It will provide a load life expectancy of 50 million
   inches of travel at an operating load of 400 pounds. The screw and nut assemblies are
   made of hardened steel.
• Precision-Rolled Ball Screws: Lead accuracy is guaranteed to be within
   .003 inches per foot accumulative. Lead charts for programming lead
   error on n/c applications are available.
• Preloaded Ball Nuts: Each ball nut is preloaded to eliminate lost
   motion. This system stiffness provides faster response from a
   control command. This added stiffness also allows heavier cuts
   and climb milling thus increasing productivity. The Rockford
   preload is adjustable. This feature permits readjustment for wear
   and reduces the need for repair or replacement at some time
   in the future.
• Brush-Type Wipers: Brush-type wipers, at the ends of each
   preloaded ball nut assembly prevents entry of dirt and
   metal chips.


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