Outer Housing: Surface Finish Ra 1.6 μm or better

Component Specifications

Definition

The outer housing is a critical structural component of linear bearings, typically cylindrical or rectangular in shape, designed to enclose and protect the bearing's internal rolling elements (balls or rollers), retainers, and raceways. It serves as the primary interface for mounting the bearing to machine structures while preventing ingress of dust, debris, and moisture that could compromise bearing performance and lifespan.

Working Principle

The outer housing functions as a protective barrier and mounting platform. It maintains precise alignment of internal bearing components through machined surfaces, distributes loads evenly across the bearing structure, and often incorporates sealing mechanisms (such as wipers or seals) to exclude contaminants. Its rigidity ensures dimensional stability under operational forces.

Materials

Typically made from high-strength materials: carbon steel (e.g., S45C, AISI 1045), stainless steel (e.g., SUS304, AISI 440C for corrosion resistance), or aluminum alloys (e.g., 6061-T6 for lightweight applications). Surface treatments may include black oxide coating, zinc plating, or hard anodizing for aluminum.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	HRC 58-62 for steel housings
Housing Type	Closed or Open
Load Capacity	Dynamic: 5-50 kN, Static: 10-100 kN
Mounting Style	Flange, Block, or Pillow Block
Surface Finish	Ra 1.6 μm or better
Operating Temperature	-20°C to +120°C

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 14728, DIN 636

Parent Products

This component is used in the following industrial products

Linear Bearings

Precision mechanical components that provide smooth, low-friction linear motion along a fixed axis.

View Product Details

Linear Bearing

A precision mechanical component that provides low-friction linear motion along a guide rod or shaft.

View Product Details

Engineering Analysis

Risks & Mitigation

Contamination ingress leading to bearing failure
Improper mounting causing misalignment
Material fatigue under cyclic loads
Corrosion in harsh environments

FMEA Triads

Trigger: Inadequate sealing allowing contaminant ingress
Failure: Increased friction, wear, and eventual bearing seizure
Mitigation: Use housings with integrated seals/wipers, implement regular maintenance cleaning

Trigger: Improper mounting torque or alignment
Failure: Premature wear, reduced accuracy, and vibration
Mitigation: Follow manufacturer torque specifications, use precision alignment tools during installation

Trigger: Material corrosion in humid/chemical environments
Failure: Structural weakening and dimensional changes
Mitigation: Select corrosion-resistant materials (stainless steel), apply protective coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Housing bore tolerance: H7, Mounting surface flatness: 0.01 mm/100 mm

Test Method

Dimensional verification via CMM, load testing per ISO 14728, seal effectiveness testing with IP ratings

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Outer Housing

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

Zhejiang Jiade Machinery Co., Ltd.

Huzhou, Zhejiang, CN

Founded 2011100-200 staff40,000㎡

IATF16949

Also makes: Drive Shaft, Automotive Components

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

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

Related Components

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the primary function of an outer housing in linear bearings?

The outer housing protects internal bearing components from contaminants like dust and moisture, provides structural support for mounting, and maintains precise alignment of rolling elements.

Can outer housings be interchanged between different linear bearing brands?

Generally not interchangeable due to dimensional and mounting variations between manufacturers. Always consult manufacturer specifications for compatibility.

How does material choice affect outer housing performance?

Steel housings offer high strength and durability, stainless steel provides corrosion resistance, while aluminum reduces weight but may have lower load capacity.

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.

Outer Housing