FK-15 Ball Screw Support Unit | High-Precision Fixed-Side Bearing Housing

The FK-15 Support Unit is a critical cornerstone for high-performance CNC machinery, designed specifically to secure the fixed end of a ball screw. Engineered to accommodate a 15mm shaft diameter (typically for 20mm ball screws), this unit features a robust housing of high-strength steel paired with precision-grade angular contact bearings. These bearings are arranged to handle both radial and high axial loads, ensuring zero-backlash operation and superior stability during rapid travel and high-torque milling. The FK-15's compact, flange-style mounting allows for seamless integration into dense machine frames while maintaining the structural integrity required to withstand loads up to 500 kg. With integrated low-friction seals and a pre-greased internal assembly, the FK-15 ensures a long, maintenance-free operational life in professional industrial environments.

High-axial rigidity with precision angular contact bearings
Flange-style fixed-side mounting for superior stability
High-strength steel housing with black oxide finish for corrosion resistance
Capable of handling high-load industrial applications up to 500 kg
Low-friction sealing system to protect against workshop debris
Pre-loaded and pre-greased for rapid machine assembly
Engineered for high-repeatability and zero-backlash CNC motion

Engineering Analysis & Technical Data

Technical Parameter	Specification Details
MODEL NUMBER	FK-15
SUPPORT TYPE	Fixed-Side (Flange Type)
SHAFT DIAMETER	15 mm
LOAD CAPACITY	Up to 500 kg
MATERIAL GRADE	High-Strength Carbon Steel
BEARING TYPE	Angular Contact Bearings
MECHANICAL	weight: 0.58 kg \| mountingHoleDiameter: 6.6 mm \| totalHeight: 54 mm \| protectionRating: Standard Dust-Proof Seal

Industrial Applications

Usage Scenario	Target Industry
CNC Router X, Y, and Z Axis Assemblies	Machine Tool Manufacturing
Precision Milling and Lathe Ball Screw Support	Industrial Automation and Robotics
Industrial Automation and Linear Actuators	Precision Engineering and Tooling
Medical Diagnostic and Scanning Tables	Medical Technology and Instrumentation
Automated Bridge Saws and Stone Processing Machinery	Furniture and Signage Fabrication
Industrial Robotics and Pick-and-Place Systems	General Engineering
High-Precision Measurement and Testing Equipment	General Engineering

Technical FAQ

Which ball screw is the FK-15 compatible with?

The FK-15 is typically used for ball screws with a 20mm outer diameter (like the SFU2005 or SFU2010), provided the shaft end has been machined down to 15mm to fit the bearings.

What is the difference between FK and BK support units?

Both are fixed-side supports. FK units are flange-style, designed to be mounted through a hole in the frame, while BK units are pillow-block style, designed to be mounted on top of a flat surface.

Does the FK-15 come with a locknut?

Yes, our TriQuench FK-15 units are supplied with a precision locknut and a set screw to ensure the ball screw is securely pre-loaded against the bearings.

Detailed Overview of FK-15 Ball Screw Support Unit | High-Precision Fixed-Side Bearing Housing

Advanced Engineering & Integration

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