Our metric linear motion bearings, ideal for single-direction motion applications, are widely used in Europe. Offered in a wide variety of shaft shapes, these bearings are available in chrome or stainless steel with either a steel or resin retainer. The slide block housings are also available in several styles. These bearings contain internal seals (UU).

The KB series is available in standard, adjustable, or open style, which incorporates bottom plates and mounting screws to ensure the bushing remains in proper position.

Available Dimensions:

Shaft Diameter (dr): 8 mm to 80 mm

Outer Diameter (D): 16 mm to 120 mm

Length (L): 25 mm to 165 mm

Distance Between Retaining Rings (B): 16.5 mm to 133.7 mm

Retaining Ring Width (W): 1.1 mm to 4.15 mm

Retaining Ring Diameter (D1): 15.2 mm to 116 mm

Dynamic Load (C): 27 kgf to 750 kgf

Static Load (Co): 41 kgf to 1,630 kgf

Configuration: Open, standard and adjustable type are available.

Seal Type: Seals on both ends are available, as well as no seals.

KB Type Linear Motion Bearing Dimension Diagram

Items	KB 8 KB Metric Type Linear Motion Bearings	KB 8UU KB Metric Type Linear Motion Bearings	KB 12 KB Metric Type Linear Motion Bearings	KB 12UU KB Metric Type Linear Motion Bearings	KB 12-AJ KB Metric Type Linear Motion Bearings
(dr) Shaft Diameter	N/A 8 mm	N/A 8 mm	N/A 12 mm	N/A 12 mm	N/A 12 mm
(dr) High Tolerance	N/A +8/0 µm
(D) Outer Diameter	N/A 16 mm	N/A 16 mm	N/A 22 mm	N/A 22 mm	N/A 22 mm
(D) Tolerance	N/A 0/-8 µm	N/A 0/-8 µm	N/A 0/-9 µm	N/A 0/-9 µm	N/A 0/-9 µm
Length	N/A 25 mm	N/A 25 mm	N/A 32 mm	N/A 32 mm	N/A 32 mm
(L) Tolerance	N/A 0/-200 µm
Dist. Btwn Retaining Rings	N/A 16.5 mm	N/A 16.5 mm	N/A 22.9 mm	N/A 22.9 mm	N/A 22.9 mm
(B) Tolerance	N/A 0/-200 µm
(W) Retaining Ring Width	N/A 1.1 mm	N/A 1.1 mm	N/A 1.3 mm	N/A 1.3 mm	N/A 1.3 mm
(D1) Retaining Ring Diameter	N/A 15.2 mm	N/A 15.2 mm	N/A 21 mm	N/A 21 mm	N/A 21 mm
(h) Dimension	N/A	N/A	N/A 1.5 mm	N/A 1.5 mm	N/A 1.5 mm
(h1) Dimension	N/A	N/A	N/A 7.5 mm	N/A 7.5 mm	N/A 7.5 mm
(C) Dynamic Load	N/A 27 kgf	N/A 27 kgf	N/A 52 kgf	N/A 52 kgf	N/A 52 kgf
(Co) Static Load	N/A 41 kgf	N/A 41 kgf	N/A 79 kgf	N/A 79 kgf	N/A 79 kgf
Ball Circuit	N/A 4
Weight	N/A 22 gf	N/A 22 gf	N/A 45 gf	N/A 44 gf	N/A 44 gf
Configuration	N/A Standard Type	N/A Standard Type	N/A Standard Type	N/A Standard Type	N/A Adjustable Type
Seal Type	N/A No Seals	N/A Seals on Both Ends	N/A No Seals	N/A Seals on Both Ends	N/A No Seals
(θ) Dimension	N/A	N/A	N/A 78 º	N/A 78 º	N/A 78 º
Precision Eccentricity	N/A 6 µm
High Eccentricity	N/A 12 µm
Maximum Radial Clearance	N/A -3 µm	N/A -3 µm	N/A -4 µm	N/A -4 µm	N/A -4 µm
Available Housing Types	N/A NB TOPBALL Slide Units include a clear anodized corrosion resistant aluminum block and either one or two TOPBALL self-aligning slide bushings Closed and adjustable clearance styles incorporate machined snap ring grooves in combination with standard retaining rings for slide bush retention. The open style incorporates bottom plates and mounting screws to retain bushing in proper position. All styles are provided with standard machined reference edges for proper alignment and installation.
Different Housing Types	N/A a1375.jpg