3 Pack CNC Linear Motion Kit with 2pcs HGR20 500mm Linear Guide Rails and 4 HGH20CA Blocks plus RM1605 500mm Ball Screw Set with BK BF12 End Supports and Coupler for DIY CNC Machines
3 Pack CNC Linear Motion Kit with HGR20 Rails and RM1605 Ball Screw
✔️ 500mm Linear Guide Rail Set with HGH20 Blocks and SFU1605 Ball Screw
This CNC motion kit bundles linear guide rails with a matching ball screw to create a smooth, accurate movement system for DIY CNC machines and automation builds. It’s commonly used for CNC routers, small milling setups, robotics frames, and custom automation projects where stable linear travel is needed.
Pack size: 3-pack total including 2 linear rail sets and 1 ball screw set
✅ Includes 2 linear guide rails HGR20, each 500mm and 19.68 inches long
✅ Includes 4 HGH20CA sliding carriage blocks
✅ Includes 1 RM1605 ball screw, 500mm and 19.68 inches long
✅ Ball screw diameter: 16mm and 0.63 inch
✅ Ball screw lead and pitch: 5mm and 0.20 inch
✅ Includes metal ball nut, BK12 fixed support, BF12 floating support, and coupler
✅ Linear rails made from carbon steel for rigidity
✅ Bearings made from bearing steel for smooth rolling motion
✅ Length tolerance: ±0.5mm and ±0.02 inch
✅ Handy for DIY CNC machines, automation equipment, robotics, and industrial motion assemblies
Dimensions
Parameter Value
Linear Rail Length 500mm 19.68 in
Ball Screw Length 500mm 19.68 in
Ball Screw Diameter 16mm 0.63 in
Ball Screw Lead Pitch 5mm 0.20 in
Length Tolerance ±0.5mm ±0.02 in
💡 Why combine linear guide rails with a ball screw in CNC motion systems?
Using linear rails together with a ball screw creates a stable and efficient motion platform for precision machines.
-
Keeps linear travel straight and rigid under cutting or load forces
-
Reduces friction and backlash compared to basic slide systems
-
Improves positioning accuracy and repeatability in CNC builds
-
Supports smoother motion and longer service life for motors and bearings
This CNC kit is a handy solution when you want clean alignment, steady travel, and dependable motion for DIY CNC, automation machines, and custom robotic projects.