Editorial Technical Reference

High-Precision Linear Motion Ball Bushing

This page explains how High-Precision Linear Motion Ball Bushing is classified within Manufacture of General-Purpose Machinery. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A high-precision linear motion ball bushing is a critical component used in general-purpose machinery to facilitate smooth, accurate linear movement along shafts or rails.

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High-Precision Linear Motion Ball Bushing in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for High-Precision Linear Motion Ball Bushing

Definition
A high-precision linear motion ball bushing is a critical component used in general-purpose machinery to facilitate smooth, accurate linear movement along shafts or rails. It consists of an outer sleeve containing precision-ground ball bearings that recirculate within hardened raceways, providing minimal friction and high load capacity. This component is essential for applications requiring precise positioning and repeatable motion in automated equipment, CNC machines, and material handling systems. Its design allows for high-speed operation while maintaining dimensional stability and long service life under various industrial conditions. The bushing is available in bore diameters from 5 to 80 mm, outer diameters from 12 to 120 mm, and lengths from 24 to 180 mm, conforming to ISO 10285. Dynamic load ratings range from 0.4 to 12.5 kN, and static load ratings from 0.7 to 20.4 kN, per ISO 14728-1 and ISO 14728-2 respectively. Operating temperature range is -20 to 80 °C. Tolerance grades C0 to C5 are offered, with radial clearances from 0.005 to 0.020 mm. Maximum travel speed is 5 to 10 m/s, and coefficient of friction is 0.001 to 0.004 under lubricated conditions. Materials include chrome steel (GCr15), stainless steel (440C), and engineering plastics (POM). Sealing options are RS or 2RS. Weight per piece ranges from 0.01 to 2.5 kg. Always verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
Ball bearings recirculate within precision raceways between the bushing's inner diameter and the shaft, converting sliding friction to rolling friction for smooth linear motion with minimal resistance. The recirculating balls distribute load evenly, enabling high load capacity and low wear. The design minimizes stick-slip, ensuring consistent motion at low speeds. Proper lubrication and sealing are essential to maintain performance and prevent contamination. The bushing operates within specified temperature and speed limits; exceeding these can cause premature failure. Regular inspection for wear, noise, or increased friction is recommended.
Common Materials
Chrome Steel (GCR15), Stainless Steel (440C), Engineering Plastics (POM)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Bore DiameterRequired5–80 mmPrecision inner diameter for shaft compatibilityISO 10285
Outer DiameterRequired12–120 mmExternal dimension for housing fitISO 10285
LengthRequired24–180 mmAxial dimension of bushing bodyISO 10285
Dynamic Load RatingRequired0.4–12.5 NMaximum radial load under motionISO 14728-1
Static Load Rating0.7–20.4 NMaximum stationary radial loadISO 14728-2
Operating Temperature Range-20–80 °CAllowable temperature for continuous operation
Tolerance GradeC0–C5C0 highest precision; C5 for general applications.ISO 10285
Radial Clearance0.005–0.020 mmPreload classes available for zero clearance.ISO 10285
Max. Travel Speed5–10 m/sDepends on lubrication and load.
Coefficient of Friction0.001–0.004For lubricated conditions; low stick-slip.
LubricationGrease or oilFactory pre-lubricated with lithium soap grease.ISO 8139
SealingRS or 2RSContact seals for contamination resistance; non-contact for low friction.
MaterialGCr15Bearing steel; stainless steel option for corrosive environments.GB/T 18254
Weight0.01–2.5 kgPer piece, depending on size.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Outer Sleeve Part
    Provides structural housing and mounting surface
    Material: Chrome Steel
  • Ball Retainer Part
    Holds and guides ball bearings in recirculating path
    Material: Engineering Plastic
  • Precision Ball Bearings Part
    Provide rolling contact for low-friction motion
    Material: Chrome Steel
  • Seal/Shield Optional Part
    Protects internal components from contamination
    Material: Synthetic Rubber

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Precision Linear Motion Ball Bushing.

linear ball bearing linear bushing recirculating ball bushing

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 10 MPa (100 bar) static load, 5 MPa dynamic
other spec: Max velocity: 2 m/s, Max acceleration: 50 m/s², Lubrication required for optimal performance
temperature: -20°C to +120°C (standard), up to +150°C with special materials
Media Compatibility
✓ Machine tool slides ✓ Automated assembly equipment ✓ Precision measurement devices
Unsuitable: High particulate or abrasive environments without protective seals
Sizing Data Required
  • Shaft diameter and tolerance
  • Required load capacity (static/dynamic)
  • Stroke length and mounting configuration

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Brinelling
Cause: Excessive static loads or impact forces causing permanent deformation of raceways and balls, often from improper handling or shock loading during operation.
Contamination-induced wear
Cause: Ingress of abrasive particles (dust, metal chips, etc.) due to inadequate sealing or harsh environments, leading to accelerated ball and raceway surface degradation.
Maintenance Indicators
  • Audible grinding or scraping noises during linear motion, indicating loss of lubrication or contamination.
  • Visible misalignment or uneven wear patterns on the bushing housing or shaft, suggesting mounting errors or excessive play.
Engineering Tips
  • Implement strict contamination control: Use appropriate seals or wipers, maintain clean installation environments, and apply filtered lubrication to prevent abrasive particle ingress.
  • Ensure precise alignment and mounting: Follow manufacturer torque specifications, use alignment tools during installation, and avoid cantilevered loads to distribute forces evenly across the bushing.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 3408-3:2006 (Ball screws - Part 3: Acceptance conditions and acceptance tests) ANSI B4.1-1967 (R2009) (Preferred Limits and Fits for Cylindrical Parts) DIN 636:2017 (Linear motion rolling bearings - Ball bushing bearings)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: ±0.005 mm
  • Parallelism of mounting surfaces: 0.01 mm/100 mm
Quality Inspection
  • Dimensional accuracy verification using CMM (Coordinate Measuring Machine)
  • Surface roughness measurement per ISO 4287

Manufacturers of High-Precision Linear Motion Ball Bushing

7 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

ALM Intelligent Technology Suzhou Co.,Limited
Suzhou, Jiangsu, CN
Also makes: Linear Guideways, Linear Motor, Linear Bearing and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Linear Ball Bearing”
View source page ↗ autolinearmotion.com · checked 2026-09-07
View profile Send enquiry
Asia FON (Tianjin) Technology Co.,Ltd
Tianjin, CN
Also makes: Linear Guide/Rail, Linear Bearing, Precision Linear Motion Guide Rail and 1 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Linear Ball Bearing”
View source page ↗ tjfon.com · checked 2026-09-09
View profile Send enquiry
LIMON Robot
Ningbo, Zhejiang, CN
Also makes: Linear Guideways, Rotation Drive, Stepper Motor and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Linear Bushing”
View source page ↗ limonrobot.com · checked 2026-09-08
View profile Send enquiry
LinRail
Qingdao, Shandong, CN
Also makes: Laser Cutting System, Linear Guide Blocks, Linear guide / Rails and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Linear Bushings”
View source page ↗ linrail.com · checked 2026-09-16
View profile Send enquiry
SCREWTECH
Suzhou, Jiangsu, CN
Also makes: Linear Motion System, Linear Bearing, Recirculating Ball Nut and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Linear Bushing”
View source page ↗ screw-tech.com · checked 2026-09-09
View profile Send enquiry
VXO
Suzhou, Jiangsu, CN
Also makes: Linear bearing/guides, Linear Guideways, Recirculating Ball Nut and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “VXO-Linear Ball Bearing Manufacturer”
View source page ↗ vxolinearmotion.com · checked 2026-09-08
View profile Send enquiry
Zhejiang Waxing Electromechanical Co., Ltd.
Zhejiang, CN
Also makes: Universal Joint, Linear Bearing, Housing / Pillow Block and 7 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Premium Quality Linear Ball Bearing KH series”
View source page ↗ wxingbearing.com · checked 2026-08-30
View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 16 September 2026

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Frequently Asked Questions

What is the bore diameter range for this ball bushing?

The bore diameter range is 5 to 80 mm, per ISO 10285. Always confirm the exact size for your application with the manufacturer.

What materials are available for this bushing?

Materials include chrome steel (GCr15), stainless steel (440C), and engineering plastics (POM). Choose based on environmental and load requirements.

What is the operating temperature range?

The operating temperature range is -20 to 80 °C. Ensure your application stays within this range to avoid performance degradation.

How should I verify the load ratings?

Dynamic and static load ratings are provided as ranges (0.4–12.5 kN and 0.7–20.4 kN) per ISO 14728-1 and ISO 14728-2. Confirm the specific rating for your model with the supplier.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.
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