Ball Screws - Nuts

Ball screw nuts are used together with ball screws in an assembly referred to as a ball screw drive. The ball screw drive converts rotary motion to linear motion with the help of recirculating metal balls.

How do ball screw nuts work?

Ball screw drives work in the same manner as ball bearings, where metal balls move along an inclined inner or outer race to minimise friction. The ball screw nut and screw (a threaded shaft) have matching helical grooves or races where the rolling balls recirculate continuously to minimise friction.

Applications and types of ball screw nuts

Ball screw nuts are most commonly used in precision machines and industrial machinery. You will find them in robots, precision assembly equipment and machine tools. They're also used in car power steering systems to translate rotary motion to axial motion.

Ball screw nuts are classified by the method of ball circulation into end-cap type, return-pipe type and deflector type. They can also be categorised by preloading method into fixed point preloading types (double-nut method and offset preloading) and constant pressure preloading type.


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Description Price Ball Screw Nut Type Lead Size Overall Length For Shaft Diameter Outside Diameter
RS stock no. 481-2677
Mfr. Part No.SD 12x4 R
BrandSKF
R 1,315.24
Each
units
Cylindrical 4mm 34mm 12mm 25.5mm
RS stock no. 341-1661
Mfr. Part No.SH 6 x 2 R
BrandSKF
R 1,185.95
Each
units
Cylindrical 2mm 20mm 6mm 16.5mm
RS stock no. 481-2683
Mfr. Part No.SD 16x2 R
BrandSKF
R 1,427.30
Each
units
Cylindrical 2mm 27mm 16mm 29.5mm
RS stock no. 341-1699
Mfr. Part No.SH 10 x 3 R
BrandSKF
R 1,258.08
Each
units
Cylindrical 3mm 29mm 10mm 21mm
RS stock no. 481-2655
Mfr. Part No.SD 8x2,5 R
BrandSKF
R 1,158.85
Each
units
Cylindrical 2.5mm 23.5mm 8mm 17.5mm
RS stock no. 481-2661
Mfr. Part No.SD 10x2 R
BrandSKF
R 1,235.03
Each
units
Cylindrical 2mm 22mm 10mm 19.5mm
RS stock no. 481-2699
Mfr. Part No.SD 16x5 R
BrandSKF
R 1,499.23
Each
units
Cylindrical 5mm 42mm 16mm 32.5mm
RS stock no. 341-1728
Mfr. Part No.SH 12.7 x 12.7 R
BrandSKF
R 1,165.96
Each
units
Cylindrical 12.7mm 50mm 12.7mm 29.5mm