Industry-Verified Manufacturing Data (2026)

Linear Guide / Bearing Housing

Based on aggregated insights from multiple verified 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.

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
    Main structural frame that provides rigidity and mounting points.
    Material: Cast Iron or Aluminum Alloy
  • Bore / Raceway
    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
    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)
    Protect the internal bearing or guideway from dust, chips, and contaminants.
    Material: Rubber or Polyurethane
Engineering Reasoning
0-150°C temperature, 0-1000 N radial load, 0-500 N axial load, 0-2 m/s linear velocity
Yield strength exceeded at 250 MPa stress, 0.1 mm permanent deformation, 80°C thermal expansion mismatch
Design Rationale: Plastic deformation from Hertzian contact stress exceeding material yield strength, thermal expansion coefficient mismatch (steel: 12×10⁻⁶/°C vs aluminum: 23×10⁻⁶/°C) causing binding
Risk Mitigation (FMEA)
Trigger Contaminant ingress (ISO 4406 Class 21/19/16 exceeded)
Mode: Abrasive wear increasing rolling resistance by 300%
Strategy: IP67-rated sealing with labyrinth seals and wipers
Trigger Misalignment exceeding 0.05 mm/100 mm straightness
Mode: Edge loading causing premature fatigue spalling
Strategy: Precision ground mounting surfaces with 0.01 mm flatness tolerance

Industry Taxonomies & Aliases

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

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

✓ 93% Supplier Capability Match Found

P Project Engineer from Germany Jan 25, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Linear Guide / Bearing Housing arrived with full certification."
Technical Specifications Verified
S Sourcing Manager from Brazil Jan 22, 2026
★★★★★
"Great transparency on the Linear Guide / Bearing Housing components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from Canada Jan 19, 2026
★★★★★
"The Linear Guide / Bearing Housing we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

16 sourcing managers are analyzing this specification now. Last inquiry for Linear Guide / Bearing Housing from Brazil (1h ago).

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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.

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