Linear bearing is a low-cost production of linear motion system for unlimited travel in conjunction with the cylinder axis. Because of point contact between ball and straight axis, so the load is small. The ball is spinning with the smallest friction, it can run a high precision and smooth motion. Flange linear bearings can be divided into: round flange type, oval flange, guide wheel flange, guide the oval flange type, plus long round flange type.

This is the sliding unit with the aluminium case, shafts and aluminium rail for preventing deflexion. This is the complete sliding unit systems and can be clamped simply tightening by bolt with high accuracy. The support rail unit provides maximum rigidity and stiffness to the shaft throughout the whole stroke, and ensure the performance of the unit.

The shaft is case hardened. If you use normal steel shafts, the bearings will cut them up in no time. So make sure what you buy is case hardened!

Specification
SBR20-1200mm Linear Rail Set
Type: Linear Actuator
Model: SBR20-1200 SBR20UU
Length: 47" (1200 mm)
Diameter: 0.78" (20mm)
Guide material: Axis - 45 carbon steel optical axis, chrome-plated surface hard axis; bracket - aluminum
Optical axis accuracy: Optical axis accuracy g6 level
Optical axis hardness: HRC58-60 degrees
Packing size: 49"x5"x3"(122x12x7cm)
G.W.: 11lbs( 5kg)

SBR20-1000mm Linear Rail Set
Type: Linear Actuator
Condition: 100% brand new
Diameter: 20 mm (0.78")
Rail Shafts: 2 X SBR20,1000mm(39.5")
Gross Weight: 8kg (17.6 lb)
Package Dimensions: 102* 9* 8 cm (40.2"* 3.5"* 3.1")

Package Content
SBR20-1200mm Linear Rail Set
2 X SBR20-1200mm Rails
4 X SBR20UU Blocks

SBR20-1000mm Linear Rail Set
2 X SBR20 1000 mm/39.5" Fully Supported Linear Rail Shafts
4 X SBR20UU Bearing Blocks