Editorial Technical Reference

Aluminum CNC Machined Bearing Housing

This page explains how Aluminum CNC Machined Bearing Housing is classified within Aluminum CNC Machining. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

This CNC machined aluminum component is designed to securely mount and protect bearings in mechanical assemblies.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Aluminum CNC Machined Bearing Housing

Definition
This CNC machined aluminum component is designed to securely mount and protect bearings in mechanical assemblies. It provides precise alignment and support for rotating shafts while offering thermal dissipation and corrosion resistance. The housing is manufactured through precision milling, turning, and drilling operations to achieve tight tolerances for bearing fit and mounting interfaces. It is commonly used in industrial machinery, automotive systems, and electromechanical devices where reliable bearing performance is critical.

The housing is available in aluminum alloys 6061 and 7075, with an optional anodized coating for enhanced surface protection. Key parameters include a bore diameter of 20–100 mm, overall height of 50–200 mm, and mounting hole diameter of 8–20 mm. Material grade is typically 6061-T6 per ASTM B221. Surface finish ranges from Ra 0.8 to 1.6 per ISO 1302. Operating temperature is -40 to 85°C, with heat treatment recommended above 85°C. Maximum speed is 5000–15000 rpm, radial load capacity 5–50 kN, and axial load capacity 2–20 kN. Tolerance grade for bore and mounting surfaces is IT6–IT7 per ISO 286. Weight ranges from 0.5 to 5 kg, and IP rating is IP54–IP65 per IEC 60529.

These values are reference ranges and must be verified for the specific model and application. The housing is a component, not a complete assembly; it requires proper bearing selection, lubrication, and installation. Always confirm model-specific specifications and applicable standards with the legal manufacturer or supplier before procurement.
Working Principle
The bearing housing provides structural support and alignment for bearings, transferring loads to the main assembly while protecting the bearing from contaminants. It maintains the bearing's position relative to the shaft and housing bore, ensuring proper operation. The housing absorbs radial and axial loads, dissipates heat, and shields the bearing from dust and moisture. Its precision-machined surfaces ensure correct bearing fit and alignment, reducing wear and extending bearing life.
Common Materials
aluminum alloy 6061, aluminum alloy 7075, anodized aluminum coating
Technical Parameters
ParameterTypical rangeNotes & selection driver
Bore DiameterRequired20–100 mmPrecision diameter for bearing fit
Overall HeightRequired50–200 mmTotal housing height
Mounting Hole DiameterRequired8–20 mmDiameter of mounting holes
Material GradeRequired6061-T6Aluminum alloy specificationASTM B221
Surface FinishRa 0.8–1.6 RaSurface roughness averageISO 1302
Operating Temperature-40–85 °CAbove 85°C may require heat treatment
Maximum Speed5000–15000 rpmDepends on bearing type and lubrication
Radial Load Capacity5–50 kNBased on bearing size and housing strength
Axial Load Capacity2–20 kNLower than radial for standard bearings
Tolerance GradeIT6–IT7For bore and mounting surfacesISO 286
Weight0.5–5 kgDepends on size and material
IP RatingIP54–IP65Higher rating for dusty or wet environmentsIEC 60529

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Aluminum CNC Machined Bearing Housing.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar (gauge)
other spec: Max shaft speed: 10,000 RPM, Vibration limit: 5 g RMS
temperature: -40°C to 150°C
Media Compatibility
✓ Lubricating oils (ISO VG 32-68) ✓ Water-glycol hydraulic fluids ✓ Dry inert gases (e.g., nitrogen)
Unsuitable: Chlorinated or acidic chemical environments
Sizing Data Required
  • Bearing outer diameter (mm)
  • Required housing mounting configuration (e.g., flange, pillow block)
  • Shaft speed and radial/axial load ratings

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from bearing forces and thermal expansion mismatches leading to stress concentration at sharp corners or machining marks
Bearing seat wear/loosening
Cause: Inadequate interference fit, improper bearing installation, or aluminum's lower hardness allowing fretting and clearance development
Maintenance Indicators
  • Audible high-frequency vibration or whining noise during operation
  • Visible aluminum oxide powder (white residue) around bearing housing or mounting surfaces
Engineering Tips
  • Apply controlled interference fits with thermal installation methods to prevent housing damage during bearing mounting
  • Implement regular vibration analysis monitoring to detect early bearing degradation before housing damage occurs

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 286-2:2010 — Geometrical product specifications (GPS): limits and fits, tables of standard tolerance classes ANSI B4.1-1967 — Preferred Limits and Fits for Cylindrical Parts

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: ±0.01 mm
  • Flatness of mounting surface: 0.05 mm
Quality Inspection
  • Bore diameter verification with air gauge or CMM
  • Anodised coating thickness measurement

Manufacturers of Aluminum CNC Machined Bearing Housing

Manufacturer profiles associated with Aluminum CNC Machined Bearing Housing.

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Frequently Asked Questions

What materials are used for this bearing housing?

The housing is made from aluminum alloy 6061 or 7075, with an optional anodized coating. The material grade is typically 6061-T6 per ASTM B221, but confirm the specific grade for your application.

What are the key dimensional parameters?

Bore diameter ranges from 20 to 100 mm, overall height from 50 to 200 mm, and mounting hole diameter from 8 to 20 mm. These are reference ranges; verify exact dimensions for your model.

What is the operating temperature range?

The operating temperature range is -40 to 85°C. Above 85°C, heat treatment may be required. Always check the manufacturer's specifications for your specific application.

What standards apply to this product?

Relevant standards include ASTM B221 for material, ISO 1302 for surface finish, ISO 286 for tolerance grade, and IEC 60529 for IP rating. These are references for verification, not proof of compliance.

Data Basis

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

Preliminary Technical Classification
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