Housing/Retainer: Temperature Range -20°C to 120°C

Component Specifications

Definition

The housing/retainer is a critical structural component in shaft/bearing assemblies that encloses and positions rolling-element bearings (such as ball or roller bearings). It provides precise alignment, maintains bearing preload, protects against contaminants, and facilitates heat dissipation. This component ensures the bearing operates within specified tolerances while supporting radial and axial loads from rotating shafts in industrial machinery.

Working Principle

The housing/retainer works by creating a rigid, accurately machined enclosure that holds bearings in fixed positions relative to the shaft and machine frame. It distributes mechanical loads evenly across the bearing surfaces, prevents misalignment during operation, and often incorporates sealing mechanisms to retain lubrication and exclude debris. Proper design ensures minimal vibration and thermal expansion effects.

Materials

Typically made from cast iron (e.g., ASTM A48), ductile iron, steel alloys (e.g., AISI 1045), or aluminum alloys (e.g., 6061-T6) for lightweight applications. Materials are selected based on load capacity, corrosion resistance, and thermal properties.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Sealing	Lip seals, labyrinth seals, or V-ring seals
Bore Diameter	20-200 mm
Load Capacity	Up to 50 kN radial, 25 kN axial
Mounting Style	Pillow block, flange, or take-up unit
Lubrication Type	Grease or oil
Temperature Range	-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 113, DIN 736

Parent Products

This component is used in the following industrial products

Shaft/Bearing Assembly

A mechanical assembly consisting of a rotating shaft supported by bearings, designed to transmit motion and maintain precise alignment within position feedback encoders.

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Seal Assembly

A sealing component that prevents fluid leakage and contaminant ingress in agitator and mixer systems.

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Engineering Analysis

Risks & Mitigation

Misalignment leading to premature bearing failure
Inadequate sealing causing contamination
Thermal expansion mismatches
Improper installation damaging components

FMEA Triads

Trigger: Incorrect housing bore tolerance
Failure: Bearing slippage or excessive preload
Mitigation: Use precision machining per ISO standards and verify tolerances with gauges during assembly.

Trigger: Poor sealing design
Failure: Lubricant leakage or contaminant ingress
Mitigation: Implement multi-lip seals or labyrinth seals, and conduct regular maintenance inspections.

Industrial Ecosystem

Compatible With

Pumps, conveyors, motors, gearboxes, industrial fans

Typical Suppliers & Equivalents

SKF, NSK, Timken, FAG, NTN

Compliance & Inspection

Tolerance

H7 for bore, IT6 for mounting surfaces per ISO 286

Test Method

Dimensional inspection via CMM, load testing per ISO 15242, and seal efficiency 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.

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

Manufacturers of Housing/Retainer

Manufacturer profiles associated with Housing/Retainer.

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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 housing and a retainer in bearing assemblies?

A housing refers to the outer structure that mounts the bearing to a machine frame, providing support and alignment. A retainer (or cage) is an internal component that separates and guides rolling elements within the bearing itself to prevent contact and ensure smooth rotation.

How do I select the right housing material for my application?

Choose based on load requirements (cast iron for heavy loads, aluminum for light loads), environmental conditions (stainless steel for corrosion resistance), and thermal properties (steel for high-temperature operations). Consult manufacturer specifications for precise matching.

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.

Housing/Retainer