Fixed bearing unit FK series

cylindricalangular contact ball bearingball screw

Product overview
The Support Unit Model FK is a support unit designed to interface with the finished shaft ends of BNK precision ball screws. The fixed-side unit incorporates a JIS Class 5-compliant angular contact bearing supplied with an adjusted preload to ensure axial and radial support.

Feature tag

• Fixed side

Available model numbers

• FK 4
• FK 5
• FK 6
• FK 8
• FK 10
• FK 12
• FK 15
• FK 20
• FK 25
• FK 30

Optional items
Contamination protection

• Contamination Protection Seal for Ball Screws — Labyrinth seal
• Contamination Protection Seal for Ball Screws — Brush seal
• Wiper Ring
• Canvas seal
• Thin Film Seal
• Dust Cover for Ball Screws

Lubrication

• QZ Lubricator

Rust prevention

• Surface Treatment

Other options

• Dimensions of each model with an option attached
• Additional machining for shaft ends

Downloads / Tools (availability)

• Designer (configurator) available for FK models
• Life Calculator available for FK series
• 2D/3D CAD downloads available for FK models
• Catalog and manual available for ball screw / support unit product group

Technical specifications

• Model: FK (Round Type Model FK)
• Function: Support unit matched to BNK precision ball screw finished shaft ends
• Fixed-side bearing: JIS Class 5-compliant angular contact bearing with adjusted preload
• Applicable FK model numbers: FK 4, 5, 6, 8, 10, 12, 15, 20, 25, 30
• Optional contamination-protection seals: labyrinth, brush, wiper ring, canvas, thin film seal, dust cover
• Optional lubrication: QZ Lubricator
• Optional rust prevention: surface treatment
• Other options: dimensions with options attached; additional machining for shaft ends