Miniature Ball Screw Assemblies

Ball screws with cylindrical-style nuts allow for a more compact assembly design than their flange counterpart. They mount into specially designed housings, while a keyway in the nut mates with the housing to keep the nut from rotating within the housing.

• Standard and special machined journals available (Fixed or Floating)
• Fixed and floating end blocks available
• Standard fit nut (0.05mm max backlash)
• For a transitional fit nut (0.008mm to ≤3% preload), visit the
  configurator

Ball screws with flanged ball nuts are mounted to a plate or block using bolts or screws are secured through the provided holes. Flange-style nuts can often be easier to remove and install in an assembly, provided the mounting screws are easily accessible.

• Standard and special machined journals available (Fixed or Floating)
• Fixed and floating end blocks available
• Standard fit nut (0.05mm max backlash)
• For a transitional fit nut (0.008mm to ≤3% preload), visit the
  configurator

Ball screws with threaded cylindrical-style nuts provide a compact design with external threads for easy mounting. The external threads do not require special housings for mounting and are able to be “threaded in” making them the ideal choice for applications with space constraints.

• Standard and special machined journals available (Fixed or Floating)
• Fixed and floating end blocks available
• Standard fit nut (0.05mm max backlash)
• For a transitional fit nut (0.008mm to ≤3% preload), visit the
  configurator

Ball screws with flanged ball nuts pair a precision-ground screw shaft with a nut carrying an integral mounting flange. The flange bolts directly to the moving load or carriage, giving a rigid mounting interface without a separate adapter bracket.

• 4, 6, 8, 10 and 12 mm screw diameters with 1, 2, 5, 6 and 8 mm leads
• Grade 3 and Grade 5 accuracy classes — Grade 3 for tighter lead accuracy
• Dynamic load 420–2,200 N, static load 570–4,900 N
• Overall lengths 60–240 mm

Ball screws with square nuts hold the ball nut in a compact square body rather than a round flanged one. The square profile suits tight housing envelopes, or mounting the nut directly into a matching square bore to simplify alignment.

• 6 and 8 mm screw diameters with 1 mm lead
• Grade 3 and Grade 5 accuracy classes — Grade 3 for tighter lead accuracy
• Dynamic load 560–650 N, static load 950–1,300 N
• Overall lengths 90–160 mm