Linear Bearing Housing: Component Specs, Materials & Applications

Component Specifications

Definition

A linear bearing housing is a structural component designed to securely mount and align linear bearings (such as ball bushings or plain bearings) on guide rods or shafts. It provides mechanical support, maintains proper bearing alignment, protects the bearing from contaminants, and often includes mounting features for integration into machine frames. These housings ensure precise linear motion with minimal friction and wear in applications requiring accurate positioning.

Working Principle

The housing rigidly fixes the linear bearing in position relative to the machine structure, allowing the bearing's internal rolling elements (balls or rollers) to move smoothly along the guide rod. This converts rotational or applied forces into controlled linear motion while distributing loads and preventing misalignment.

Materials

Typically made from aluminum alloys (e.g., 6061-T6 for lightweight applications), cast iron (for high rigidity and damping), or steel (for heavy loads). May include stainless steel for corrosion resistance or engineered plastics for specific environments.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Sealing	Integrated seals or wipers for contamination protection
Lubrication	Grease fittings or pre-lubricated designs
Bore Diameter	Matches bearing OD (e.g., 12mm, 25mm, 40mm)
Load Capacity	Dynamic/static load ratings (e.g., 500N to 20kN)
Mounting Type	Flange, block, or pillow block
Precision Grade	Standard or high precision

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

Standards

ISO 10285, DIN 645

Parent Products

This component is used in the following industrial products

Guide Rod / Linear Bearing

A precision mechanical component that provides linear guidance and support for moving parts within a material hold-down system.

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Engineering Analysis

Risks & Mitigation

Misalignment causing premature bearing wear
Inadequate load capacity leading to housing deformation
Contamination ingress reducing bearing life
Improper mounting resulting in vibration or noise

FMEA Triads

Trigger: Incorrect housing alignment during installation
Failure: Increased friction, uneven wear on bearing and guide rod
Mitigation: Use precision alignment tools and follow mounting procedures; verify parallelism and perpendicularity

Trigger: Overloading beyond housing specifications
Failure: Housing cracking or deformation, bearing seizure
Mitigation: Calculate operational loads accurately; select housing with appropriate safety factor; implement load monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Typically H7 or tighter for bore fit; mounting surface flatness within 0.01mm per 100mm

Test Method

Dimensional inspection via CMM, load testing per ISO 14728, environmental sealing tests

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Linear Bearing Housing

Manufacturer profiles associated with Linear Bearing Housing.

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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

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Frequently Asked Questions

What is the difference between a flange-type and block-type linear bearing housing?

Flange-type housings mount vertically to surfaces via side flanges, ideal for space-constrained applications. Block-type housings mount horizontally with base holes, offering stable support for heavier loads.

How do I select the right material for a linear bearing housing?

Choose aluminum for lightweight and corrosion-resistant needs, cast iron for vibration damping and high rigidity, or steel for maximum load capacity. Consider environmental factors like humidity or chemicals.

Data Basis

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

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.

Linear Bearing Housing