Ball Screw Bearing Supports for Precision Linear Motion
Bearing King supplies a growing range of ball screw support units designed to provide accurate, rigid and reliable support for ball screw assemblies used in linear motion systems.
Ball screw support units are an essential part of many precision motion applications, providing bearing support at the ends of the ball screw shaft. Correctly selected support units help maintain alignment, control axial movement and provide smooth, accurate operation.
Our range is being continually expanded and will include THK ball screw support units alongside products from other leading linear motion manufacturers.
Whether you're replacing an existing support unit, maintaining CNC machinery or designing a new automation system, Bearing King can help you find the correct solution for your application.
With over 35 years of engineering experience, expert technical support and fast UK and worldwide shipping, Bearing King supplies linear motion and engineering products to customers across the globe.
Fixed Side Ball Screw Support Units
Fixed side support units are designed to locate and support the ball screw shaft accurately while handling the axial loads generated during operation.
These units typically incorporate precision angular contact bearings to provide the rigidity and accuracy required by ball screw systems.
Fixed support units are commonly used in:
- CNC machinery
- Machine tools
- Industrial automation
- Robotics
- Positioning systems
- Packaging machinery
- Production equipment
- Precision engineering machinery
Our expanding range will include square and round fixed-side support units in a variety of sizes and configurations.
Supported Side Ball Screw Support Units
Supported or floating-side units support the opposite end of the ball screw while allowing the system to operate smoothly and accurately.
These units typically use a deep groove ball bearing and are selected to complement the appropriate fixed-side support unit.
Using correctly matched fixed and supported units helps provide a reliable bearing arrangement for the complete ball screw assembly.
THK Ball Screw Support Units
Our range will include THK Ball Screw Support Units designed for use with compatible THK ball screw systems.
THK manufactures a comprehensive selection of fixed and supported-side units, including well-known BK, BF, EK, EF, FK and FF series, together with additional specialist configurations.
THK BK & BF Support Units
THK BK Support Units are fixed-side square support units designed for general ball screw applications.
THK BF Support Units provide the corresponding supported-side solution for general ball screw systems.
THK EK & EF Support Units
THK EK Support Units provide a compact square fixed-side arrangement, while THK EF Support Units are designed for the supported side.
These ranges are available in multiple sizes to suit different ball screw shaft arrangements.
THK FK & FF Support Units
THK FK Support Units provide a round fixed-side configuration for applications where this mounting arrangement is preferred.
THK FF Support Units provide a round supported-side solution.
As we expand this collection, additional THK support unit types, sizes and configurations will be added.
Choosing the Correct Ball Screw Support Unit
Choosing the correct support unit is important for maintaining the accuracy, rigidity and performance of a ball screw system.
When selecting a replacement, consider:
- Manufacturer
- Support unit model number
- Fixed or supported side
- Ball screw shaft diameter
- Shaft end dimensions
- Mounting arrangement
- Required accuracy
- Load requirements
- Existing ball screw specification
Where possible, the manufacturer's original part number or model number is the quickest and safest way to identify the correct replacement.
If you're unsure which unit you require, contact the Bearing King team with your existing part number, ball screw details, dimensions or application information and we'll help identify the correct product.
Ball Screw Support Unit Applications
Ball screw support units are widely used in machinery requiring precise and repeatable linear movement, including:
- CNC machines
- Milling machines
- Lathes
- Machine tools
- Robotics
- Industrial automation
- Pick-and-place equipment
- Packaging machinery
- Production machinery
- Measuring equipment
- Positioning systems
- Semiconductor equipment
- Precision engineering equipment
Why Buy Ball Screw Support Units from Bearing King?
- Over 35 years of engineering experience
- Growing range of linear motion products
- Products from leading manufacturers including THK
- Expert technical support
- Competitive prices
- Fast UK delivery
- Worldwide shipping
- Support identifying replacement components
- Worldwide sourcing for specialist and difficult-to-find products
If the ball screw support unit you require isn't currently displayed online, contact us with the manufacturer and part number. Our team may be able to source it through our extensive supplier network.
Frequently Asked Questions
What is a ball screw support unit?
A ball screw support unit is a bearing assembly designed to support the end of a ball screw shaft. Support units help provide the rigidity, alignment and controlled rotation required for accurate linear motion.
What's the difference between fixed and supported-side ball screw support units?
The fixed-side unit accurately locates the ball screw shaft and is designed to accommodate axial loading. The supported-side unit supports the opposite end of the shaft while allowing the ball screw system to operate correctly.
What is the difference between THK BK and BF support units?
THK BK units are fixed-side square support units for general ball screw applications, while THK BF units are supported-side units. They are designed so compatible BK and BF units can be used together as part of a ball screw support arrangement.
Do you supply THK ball screw support units?
Yes. Bearing King's range of ball screw support units will include genuine THK support units, with additional sizes and models being added to the collection.
If the THK model you require isn't currently listed, contact us with the part number and we'll check availability.
Can you source other brands of ball screw support units?
Yes. This collection will continue to expand with support units from other linear motion manufacturers. If the brand or model you require isn't displayed, contact us and we'll check our worldwide supplier network.
Do you ship ball screw support units internationally?
Yes. Bearing King supplies engineering and linear motion products throughout the UK and ships to customers worldwide.
Need Help Finding the Correct Ball Screw Support Unit?
If you already have a manufacturer's part number, searching by the exact reference is normally the quickest way to find the correct support unit.
If you're unsure, send us the manufacturer, model number, ball screw details or dimensions and our experienced team will help identify the correct product.
Whether you're replacing a single support unit or sourcing components for an ongoing engineering project, Bearing King offers expert technical support, competitive pricing and fast UK and worldwide delivery.
