45TAB10DU/GMP4 NACHI Angular Ball Screw Support Bearing Precision (45x100x20) Duplex Set

$1,215.60



Precision Angular Ball Screw Support Bearings

Precision angular ball screw support bearings are specialized angular contact bearings designed to support the screw shafts in ball screw assemblies, which convert rotary motion to linear motion with high accuracy. These bearings provide rigid axial support, ensuring precise positioning, repeatability, and smooth motion in CNC machinery and automation systems.


Key Features:

  • High axial rigidity: Optimized to handle heavy and repeated axial loads from the ball screw.

  • Preloaded design: Factory-set preload eliminates backlash and improves positioning accuracy.

  • High precision: Manufactured to P4 or P2 (ABEC 7 or 9) tolerances for minimal runout.

  • Contact angle: Typically 60° for superior axial load capacity in one direction.

  • Paired configuration: Usually mounted in back-to-back (DB) arrangement for rigidity and bidirectional load capacity.

  • Integrated structure: Often supplied as matched sets or in preassembled bearing units for easier mounting.

  • Material: High-quality bearing steel or hybrid ceramic options for longevity and thermal stability.

  • Lubrication: Pre-lubricated and sealed types available for maintenance-free operation.

  • Applications: Ideal for CNC machine tools, actuators, and precision positioning systems.

In essence, these bearings ensure high stiffness, minimal axial play, and long service life in demanding ball screw drive systems.

SKU 45TAB10DU-GMP4-NACHI
Brand Nachi
Shipping Weight 1.5800kg
Grade Premium
Bore Cylindrical
(d) Inside Ø (mm) 45
(D) Outside Ø (mm) 100
(B) Width (mm) 20
Precision Class P4 (Greater Precision than P5)
Speed Rating V (Normal)
Seal Open
Ring Material Rolling Bearing Steel
Rolling Element Material Rolling Bearing Steel
Cage Material Phenolic Resin
Type Of Lubrication Dry
Lifetime Lubricated No
Max. Operating Temperature (deg. C) +150°C
Min. Operating Temperature (deg. C) -­40°C

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