HGR20-600mm Linear Rail and RM1605 Ballscrew Kit - Precision Motion

In this review of the HGR20-600mm linear rail and RM1605 ballscrew kit, the bottom line is straightforward: it is a practical, cost-effective upgrade for hobbyists and small shops building or improving CNC routers, mills and lathes. The set stands out because it pairs two 600 mm HGR20 guide rails and a machined RM1605-600 mm ballscrew to deliver smooth, low-friction linear motion and accurate positioning, making it a compelling choice when precision and durability matter more than premium brand packaging.

Key Features

• Complete kit: Includes two HGR20-600 mm rails, four slide blocks and a RM1605-600 mm ballscrew so the main linear components are ready to install.
• Pre-drilled support rail: Steel support rail with pre-drilled holes simplifies mounting and alignment during assembly.
• High-quality steels: Carbon steel rails and GCr15 bearing steel blocks are chrome plated for corrosion resistance and long wear life.
• Smooth power transmission: The RM1605 ballscrew uses recirculating balls to reduce start torque and avoid stick-slip for accurate positioning.
• Accessory package: Includes BK12/BF12 end supports, DSG16H nut housing and a coupler to connect motor shafts without hunting for extra parts.
• Low maintenance motion: Linear bearings are designed for low friction and continuous use with minimal upkeep.

Who It's For

This kit is aimed at DIY builders, hobby machinists and small machine shops that need a reliable and affordable linear motion solution for CNC routers, lathes and small mills. It fits projects where 600 mm travel is appropriate and where buyers appreciate a mostly complete package that cuts procurement time.

Those who should look elsewhere include precision metrology labs or production lines requiring calibrated, factory-certified rails and screws, or projects that need shorter or far longer travel lengths than the 600 mm components provide.

Pros & Cons

Pros

• Solid value: customers report good functionality and strength for CNC upgrades and DIY machines.
• Smooth, precise motion: the ballscrew and guide blocks reduce friction and improve positioning accuracy.
• Durable finishes: chrome plating and high-hardness steel help resist wear and corrosion over time.
• Convenient package: includes support bearings, nut housing and coupler so fewer separate purchases are needed.

Cons

• Assembly quality varies: some buyers report mixed fit or missing hardware, so inspect components on arrival.
• Not a drop-in replacement for all machines: alignment and proper mounting are required to realize the stated precision.

Specifications

Guide rail model	HGR20
Guide rail length	600 mm (two pieces)
Ballscrew model	RM1605-600 mm
Included blocks	4 slide blocks
End supports and housing	BK12/BF12 set and DSG16H nut housing
Material	Carbon steel rails and GCr15 bearing steel blocks, chrome plated

Our Verdict

The HGR20-600 mm linear rail and RM1605 ballscrew kit is a practical and economical choice for makers and small shops that need reliable linear motion for CNC builds. It pairs robust materials with a largely complete accessory set so most users can install and start testing quickly; just allow time for careful alignment and check for any missing pieces when the kit arrives.

Frequently Asked Questions

Does the kit include end supports and a coupler?
Yes, the package lists BK12/BF12 end supports, a DSG16H nut housing and one coupler as included accessories.

Will this kit reduce stick-slip in my motion system?
The RM1605 ballscrew uses ball recirculation to minimize starting torque and stick-slip, improving positioning compared with sliding leadscrews.

Is the kit ready to mount on a DIY machine?
It is largely ready with pre-drilled support rails for easier mounting, but buyers should plan for alignment and may need additional fasteners or brackets depending on their machine frame.