1000 mm Linear Rail Slider Set: This linear rail set is of 2Pcs SBR20 1000 mm/39.4 inch linear rail and 4Pcs SBR20UU Blocks, 1 piece locking handle can adjust the tightness of the SBR20UU slider, 16 pieces M6 x 20 screws for connecting the sliding bearing blocks and plates as accessories, 1 piece wrench Sports performance under high load or long stroke, high precision, smooth moving, low friction, high performance and easy to mount & dismount Cooperate with open linear bearing to ensure excellent sports performance, and metal linear bearing, its more durable than Plastic linear bearing Perfect combination of main axle and aluminum alloy support, which nicely stabilizes the original rail. Premier quality bearing blocks moves smoothly while using Linear motion ball bearing set is widely used for digital 3D coordinate measuring equipment such as precision equipment or special machinery industry. Suitable for kinds of electronic equipment/guide bar, drive shaft, and pillar Specification:
Model: SBR20-1000mm, SBR20UU
The built-in material: Bearing Steel
The external material :Aluminum Alloy
Performance: Smooth motion, low noise
Rail Shafts: 2Pcs SBR20
Bearing Blocks: 4Pcs SBR20UU
Rail Length: 1000mm/39.4 inch

Feature:
This link for 20mm slotted bearings
Aluminum support rail with pre-drilled holes for ease of mounting
No more unwanted errors in your machining work
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!

Application:
For various kinds of automated machines and equipments.
Helps to build economical linear guiding system.
Applicable for large-scale transmission equipment including industrial robots, cracker machines, supersonic cleaning equipments, solar energy and clothing supporting devices, etc.

Package include:
2 X SBR20-1000mm Fully Supported Linear Rail
4 X SBR20UU Motion Router Solide Block Bearing