Miniature Ball Screws

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Miniature Ball Screws

BSR Miniature Ball Screws with Cylindrical and Flange Nuts by PBC Linear represent a significant advancement in precision linear motion technology. Designed and manufactured in America, these ball screws are available in six metric sizes (diameter x lead), offering a compact and efficient solution for a wide range of applications. 

With a static axial load capacity up to 2.144 kN (482 lb), these units are engineered for durability and performance. The use of a multi-liner ball return system enhances their efficiency, with polymer wipers at each end of the nut to prevent debris ingress, maintaining the system's integrity. 

These BSR Miniature Ball Screws are ideal for applications requiring precise linear motion in a compact footprint, offering both flexibility and high performance in demanding environments.

Grade 5, 7, or 10 Accuracy Available

Contact an Application Engineer for ordering a specific grade at application.engineering@pbclinear.com.

Ball Screw Assemblies FAQ

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Performance Benefits of Miniature Ball Screws

  • Compact Design: Cylindrical nuts enable more compact assembly designs, while flange nuts offer easy mounting options.
  • High Load Capacity: Capable of handling static axial loads up to 2.144 kN (482 lb), suitable for various applications.
  • Debris Prevention: Polymer wipers at each nut's end help keep out debris, ensuring long-term reliability.
  • Versatile Mounting: Availability of standard and special machined journals, as well as fixed and floating end blocks, to meet diverse mounting needs.
  • Customization Options: PBC Linear welcomes inquiries about custom ball screw designs to meet specific application requirements.
  • Ease of Assembly: Available as both assembled and unassembled units, providing flexibility according to assembly preferences.
  • Durability: Utilization of a multi-liner ball return system contributes to the units' long-lasting performance.

Shop Miniature Ball Screws

Shop our standard off-the-shelf offerings or use the configurator to customize the perfect solution for your linear motion application.

BSR Miniature Ball Screw with Cylindrical Nut

BSR Miniature Metric Ball Screw with Cylindrical Nut

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, no preload (Standard backlash clearance held to 0.05 mm MAX)
  • Standard and special machined journals available (Fixed or Floating)
  • Fixed and floating end blocks available
Name Diameter (mm) Lead (mm) Length (mm) Shop Link
BSR0601ATXR-0150-CSN-NNN-NNN-N 6 1 150 Shop Now
BSR0601ATXR-0250-CSN-NNN-NNN-N 6 1 250 Shop Now
BSR0602ATXR-0150-CSN-NNN-NNN-N 6 2 150 Shop Now
BSR0602ATXR-0250-CSN-NNN-NNN-N 6 2 250 Shop Now
BSR0801ATXR-0150-CSN-NNN-NNN-N 8 1 150 Shop Now
BSR0801ATXR-0250-CSN-NNN-NNN-N 8 1 250 Shop Now
BSR08025TXR-0150-CSN-NNN-NNN-N 8 2.50 150 Shop Now
BSR08025TXR-0250-CSN-NNN-NNN-N 8 2.50 250 Shop Now
BSR0802ATXR-0150-CSN-NNN-NNN-N 8 2 250 Shop Now
BSR0802ATXR-0250-CSN-NNN-NNN-N 8 2 150 Shop Now
BSR1002ATXR-0200-CSN-NNN-NNN-N 10 2 200 Shop Now
BSR1002ATXR-0500-CSN-NNN-NNN-N 10 2 500 Shop Now

BSR Miniature Ball Screw with Flange Nut

BSR Miniature Metric Ball Screw with Flange Nut

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, no preload (Standard backlash clearance held to 0.05 mm MAX)
  • Standard and special machined journals available (Fixed or Floating)
  • Fixed and floating end blocks available
Name Diameter (mm) Lead (mm) Length (mm) Shop Link
BSR0601ATXR-0150-RSN-NNN-NNN-N 6 1 150 Shop Now
BSR0601ATXR-0250-RSN-NNN-NNN-N 6 1 250 Shop Now
BSR0602ATXR-0150-RSN-NNN-NNN-N 6 2 150 Shop Now
BSR0602ATXR-0250-RSN-NNN-NNN-N 6 2 250 Shop Now
BSR0801ATXR-0150-RSN-NNN-NNN-N 8 1 150 Shop Now
BSR0801ATXR-0250-RSN-NNN-NNN-N 8 1 250 Shop Now
BSR08025TXR-0150-RSN-NNN-NNN-N 8 2.50 150 Shop Now
BSR08025TXR-0250-RSN-NNN-NNN-N 8 2.50 250 Shop Now
BSR0802ATXR-0150-RSN-NNN-NNN-N 8 2 150 Shop Now
BSR0802ATXR-0250-RSN-NNN-NNN-N 8 2 250 Shop Now
BSR1002ATXR-0200-RSN-NNN-NNN-N 10 2 200 Shop Now
BSR1002ATXR-0500-RSN-NNN-NNN-N 10 2 500 Shop Now