16mm Ballscrew SFU1605 RM1605 1400mm 5mm Pitch - Precision CNC Shaft

In this review of the 16mm Ballscrew SFU1605 RM1605 the bottom line is simple: this is a precision, rolled-thread ballscrew intended for hobby and light industrial CNC users who need reliable linear motion and low friction over a long travel. The reviewer found the 16mm diameter, 5mm pitch and 55.12 in (1400mm) length with standard end machining for BK/BF12 make it an easy drop-in upgrade for many leadscrew conversions, offering high static and dynamic stiffness and lower driving power from reduced friction.

Key Features

• 16mm diameter: Provides a compact but stiff shaft suitable for small to medium gantry and slide applications where space is limited.
• 5mm pitch (lead): Balances speed and resolution so it can handle both faster moves and reasonable micro-feeding for machining tasks.
• 1400mm total length: Long travel without couplings for setups that require continuous motion across a larger axis.
• Rolled thread C7 grade: Accurate manufacturing that lowers noise and stick-slip for smoother positioning compared with sliding guides.
• Standard end machining for BK/BF12: Saves installation time when pairing with common bearing blocks and supports in CNC kits.
• Metal deflector nut included: Improves ball circulation and durability for longer service life under continuous operation.

Who It's For

This ballscrew is a good match for CNC hobbyists, small machine builders and maintenance engineers who need a reliable, factory-made linear drive for XY or Z axes. The 16mm diameter and 5mm pitch suit compact routers, desktop mills and light-duty automation where low starting torque and quieter operation matter.

Those who should look elsewhere include users needing ultra-high precision spindles (consider C5 grade options) or heavy industrial applications requiring larger diameter screws with much higher load ratings. Also, builders who need custom end machining beyond the BK/BF12 standard should confirm compatibility before purchase.

Pros & Cons

Pros

• High and consistent positioning accuracy thanks to rolled thread manufacturing and C7 precision.
• Low friction and small starting torque reduce motor load and heat buildup during long runs.
• Long 55.12 in length avoids spliced joints for many applications and includes standard end machining for common supports.
• Factory-supplied metal nut and options for customization from the manufacturer simplify integration.

Cons

• Grade C7 is precise but not the highest available; those needing tighter tolerances should request C5 grade.
• At 16mm diameter it is not intended for heavy-load industrial presses or very high radial loads.

Specifications

Model	SFU1605 RM1605
Diameter	16mm
Lead / Pitch	5mm
Total Length	55.12 in / 1400mm
End Machining	Standard for BK/BF12
Precision Grade	C7 (option for C5 available)
Material	GCr15 steel

Our Verdict

The SFU1605 RM1605 16mm ballscrew is a cost-effective, long-travel solution for CNC hobbyists and small machine shops that need improved positioning and lower drive effort. With rolled-thread C7 precision, standard BK/BF12 end machining and an included metal nut, it represents solid value for applications that do not demand the highest industrial load ratings.

Frequently Asked Questions

Is this ballscrew ready to install with standard supports?
Yes, it arrives with standard end machining for BK/BF12 supports, which covers many common bearing blocks used in CNC builds.

Can I get higher precision than C7?
Yes, the manufacturer can supply C5 grade on request for applications needing tighter tolerances.

Does the package include the nut?
Yes, the item includes one metal deflector ballscrew nut along with the screw shaft.