Structured Manufacturing Data (2026)

Linear Guide / Bearing Housing

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Linear Guide / Bearing Housing used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Linear Guide / Bearing Housing is characterized by the integration of Housing Body and Bore / Raceway. In industrial production environments, manufacturers listed on CNFX commonly emphasize Cast Iron construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A structural component that houses and supports linear bearings or guide rails, providing precise linear motion guidance within mechanical systems.

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Product Specifications

Technical details and manufacturing context for Linear Guide / Bearing Housing

Definition
In a Vertical Positioning Actuator, the Linear Guide / Bearing Housing is a critical mechanical part that encloses and secures the linear bearing assembly or guide rail system. It ensures the actuator's moving platform or carriage moves along a strictly vertical axis with minimal friction, high rigidity, and precise alignment, directly contributing to the system's positioning accuracy and load-bearing capacity.
Working Principle
The housing provides a rigid, precisely machined mounting surface and internal raceways for linear bearings (such as ball bushings) or a secure base for mounting guide rails. It transfers loads from the moving carriage to the actuator's main structure while maintaining the alignment of the rolling elements (balls or rollers) to facilitate smooth, low-friction linear motion along the guideway.
Common Materials
Cast Iron, Aluminum Alloy, Carbon Steel
Technical Parameters
  • Overall housing dimensions (length, width, height), mounting hole pattern, and internal bore/raceway specifications that must match the specific linear bearing or rail model. (mm) Per Request
Components / BOM
  • Housing Body Part
    Main structural frame that provides rigidity and mounting points.
    Material: Cast Iron or Aluminum Alloy
  • Bore / Raceway Part
    Precision-machined internal surface that guides the linear bearing or contacts the guide rail.
    Material: Hardened Steel or bearing-grade material
  • Mounting Holes / Tapped Threads Part
    Allow secure attachment of the housing to the actuator structure and the bearing/rail to the housing.
    Material: Same as housing body
  • Seals / Wipers (if present) Part
    Protect the internal bearing or guideway from dust, chips, and contaminants.
    Material: Rubber or Polyurethane

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Linear Guide / Bearing Housing.

cast iron linear bearing housing aluminum alloy guide rail housing precision linear motion housing component machinery equipment bearing housing carbon steel linear guide support

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Vertical Positioning Actuator
View system integration details

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 capacity, dependent on housing material and mounting
other spec: Max linear speed: 2 m/s (continuous), 5 m/s (peak); Vibration tolerance: Up to 15 g; IP rating: IP54 standard, IP67 optional
temperature: -20°C to +80°C (standard), up to +120°C with special seals/lubrication
Media Compatibility
✓ Machine tool cutting fluids ✓ Industrial lubricants (grease/oil) ✓ Clean dry air environments
Unsuitable: High-concentration abrasive slurries or corrosive chemical baths
Sizing Data Required
  • Maximum dynamic load (N) and moment loads (Nm)
  • Required stroke length and mounting space constraints
  • Precision class (e.g., μm repeatability) and stiffness requirements

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wear and scoring
Cause: Contamination ingress (dust, debris, metal particles) due to inadequate sealing or improper lubrication, leading to abrasive damage on guide rails and bearing blocks.
Misalignment and binding
Cause: Improper installation (uneven mounting surfaces, excessive preload), thermal expansion mismatches, or foundation shifts causing uneven load distribution and increased friction.
Maintenance Indicators
  • Audible grinding, scraping, or squealing noises during operation
  • Visible metal shavings or discoloration around the housing or lubrication points
Engineering Tips
  • Implement strict contamination control: Use proper seals/wipers, maintain clean lubrication systems, and ensure clean installation environments.
  • Follow precise alignment procedures during installation: Use dial indicators for parallelism, verify mounting surface flatness, and apply manufacturer-specified preload/torque values.

Compliance & Manufacturing Standards

Reference Standards
ISO 3408-1:2006 (Ball screws - Part 1: Vocabulary and designation) ANSI/ABMA 9:1990 (Load Ratings and Fatigue Life for Ball Bearings) DIN 645:2002 (Linear ball bearings - Housing units - Dimensions and tolerances)
Manufacturing Precision
  • Bore diameter: ±0.01 mm
  • Flatness of mounting surface: 0.05 mm
Quality Inspection
  • Dimensional verification with CMM (Coordinate Measuring Machine)
  • Hardness testing (Rockwell C scale)

Factories Producing Linear Guide / Bearing Housing

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are best for linear guide bearing housings in heavy machinery?

Cast iron is ideal for heavy machinery due to its vibration damping and durability. Aluminum alloy suits lightweight applications, while carbon steel offers strength for demanding environments.

How do I select the right linear bearing housing for my equipment?

Consider load capacity, precision requirements, environmental conditions (like corrosion or debris), and compatibility with your linear bearings or guide rails. Material choice and housing specs should match your system's motion and mounting needs.

What maintenance do linear guide housings require?

Regular inspection for wear, cleaning of seals/wipers to prevent contamination, and lubrication per manufacturer guidelines. Ensure mounting integrity and check for alignment issues to maintain precision motion.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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