16mm Ballscrew SFU1605 RM1605 2600mm 5mm Pitch - High Precision CNC

In this review the 16mm Ballscrew SFU1605 RM1605 is evaluated as a heavy-duty linear motion component for CNC and industrial automation. The review finds this 16mm ballscrew best for builders and technicians who need a long, high-precision lead screw with low friction and clear end machining for BK/BF12 installation. The single biggest reason to consider it is the combination of a 5mm pitch rolled thread and C7 precision that delivers low starting torque, quieter operation and reduced drive power requirements in long travel setups.

Key Features

• 16mm Diameter: the compact shaft diameter keeps the assembly lightweight while providing rigid support for moderate loads.
• 5mm Pitch: a 5mm lead gives a practical balance of travel speed and positioning resolution for many CNC tasks.
• Length 2600mm (102.36 in): long travel capability suits large axis machines or retrofit projects where extended travel is required.
• Standard End Machining for BK/BF12: pre-machined ends simplify mounting and reduce setup time for compatible bearing blocks.
• C7 Grade Precision: rolled thread with C7 tolerance reduces stick-slip and provides consistent, repeatable linear motion.
• Metal Nut with Deflector: the included metal nut and deflector design improves longevity by managing ball return and debris.

Who It's For

This ballscrew is aimed at hobbyist and light-industrial CNC builders, machine repair shops, and automation engineers who need a long, precise screw with standard end machining for BK/BF12 bearings. It is particularly useful when low starting torque, lower noise and reduced heat build-up are priorities for long axis travel.

Those who should look elsewhere include users needing ultra-high precision drives beyond C7 tolerance (the manufacturer can supply C5 on request) or applications requiring heavier load capacity than a 16mm shaft is intended for; in those cases a larger diameter or a different grade should be selected.

Pros & Cons

Pros

• Long 2600mm length allows large travel ranges without splicing multiple sections.
• Rolled C7 thread with ball motion reduces friction, giving quieter operation and less heat.
• Pre-machined ends for BK/BF12 speed installation and improve compatibility with common support bearings.
• Factory seller offers customization and additional lengths or grades on request, which helps special projects.

Cons

• Standard precision is C7; users requiring tighter tolerances must request C5 which may add lead time or cost.
• 16mm diameter limits maximum load capacity compared with larger ball screws used in heavy industrial machines.

Specifications

Model	SFU1605 RM1605
Diameter	16mm
Lead / Pitch	5mm
Total Length	2600mm (102.36 in)
Precision Grade	C7 (C5 available on request)
Material	GCr15 steel
End Machining	Standard for BK/BF12

Our Verdict

The SFU1605 RM1605 16mm ballscrew is a practical choice for CNC builders and maintenance technicians who need a long, reliable lead screw with low friction and pre-machined ends for BK/BF12 mounting. It delivers solid value when C7 precision meets the project needs, and the option to request C5 or custom lengths makes it flexible for many applications.

Frequently Asked Questions

Can the precision grade be upgraded?
Yes, the seller notes C5 grade is available if you contact them for that option.

Is the screw ready to mount to BK/BF12 bearings?
Yes, this unit comes with standard end machining specifically for BK/BF12 support bearings to simplify installation.

What material is used for the screw?
The ballscrew is made from GCr15 steel and includes a metal nut with a deflector for ball return management.