Roller Bearing Housing

Product Specifications

Technical details and manufacturing context for Roller Bearing Housing

Definition

The roller bearing housing is a critical component of the Main Roller Assembly that provides a secure mounting structure for roller bearings. It precisely positions and aligns the bearings while protecting them from contaminants and external forces. The housing ensures proper load distribution from rotating shafts to the machine frame and maintains bearing alignment under operational stresses. This directory entry covers generic roller bearing housings used in machinery and equipment manufacturing. The housing creates a rigid enclosure that holds roller bearings in precise alignment relative to the shaft and machine structure. It transfers radial and axial loads from the rotating assembly to the stationary frame while allowing for thermal expansion and maintaining lubrication integrity. The housing's internal geometry matches the bearing's outer race to ensure proper fit and load distribution. Materials on file include cast iron, steel, and aluminum alloy. Reference parameters include bore diameter (20–200 mm, ISO 15), overall width (30–300 mm), center height (40–200 mm, ISO 113), mounting bolt spacing (80–400 mm), static load rating (10–500 kN, ISO 76), dynamic load rating (8–400 kN, ISO 281), operating temperature (-20 to 120 °C), material grade (HT200–HT300, GB/T 9439), surface treatment (paint or phosphating), and weight (2–50 kg). These values are typical ranges and must be verified for the specific model and application. Standards listed are for reference only and do not imply certification. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The housing creates a rigid enclosure that holds roller bearings in precise alignment relative to the shaft and machine structure. It transfers radial and axial loads from the rotating assembly to the stationary frame while allowing for thermal expansion and maintaining lubrication integrity. The housing's internal geometry matches the bearing's outer race to ensure proper fit and load distribution.

Common Materials

Cast Iron, Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	20–200 mm	Matches bearing outer diameterISO 15
Overall Width	30–300 mm	Determines housing footprint
Center Height	40–200 mm	Critical for shaft alignmentISO 113
Mounting Bolt Spacing	80–400 mm	Must match baseplate holes
Static Load Rating	10–500 kN	Maximum non-rotating loadISO 76
Dynamic Load Rating	8–400 kN	Bearing life calculationISO 281
Operating Temperature	-20–120 °C	Exceeding range degrades seals
Material Grade	HT200–HT300	Cast iron for strength and dampingGB/T 9439
Surface Treatment	Paint or phosphating	Corrosion protection
Weight	2–50 kg	Affects handling and installation

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

Housing Body Part
Main structural element that contains the bearing

Material: Cast Iron or Steel
Mounting Flange Part
Provides attachment points to the machine frame

Material: Same as housing body
Sealing Grooves Part
Accommodates seals to prevent contamination

Material: Machined into housing body
Lubrication Ports Part
Channels for grease or oil supply to bearings

Material: Drilled passages in housing

Applied To / Applications

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

Main Roller Assembly

View system integration details

Straightening Roller Bank

View system integration details

Manufacturers of Roller Bearing Housing

Manufacturer profiles associated with Roller 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 · Page last updated 6 September 2026

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Frequently Asked Questions

What is the primary function of a roller bearing housing?

The primary function is to provide a rigid mounting structure that holds roller bearings in precise alignment relative to the shaft and machine frame. It transfers loads, protects bearings from contaminants, and maintains lubrication integrity.

What materials are commonly used for roller bearing housings?

Common materials include cast iron, steel, and aluminum alloy. The choice depends on application requirements such as strength, weight, and corrosion resistance.

What parameters should be verified before selecting a housing?

Key parameters include bore diameter, overall width, center height, mounting bolt spacing, static and dynamic load ratings, operating temperature, material grade, surface treatment, and weight. These must match the bearing and application requirements.

Are the standards listed in the directory a guarantee of compliance?

No. Standards such as ISO 15, ISO 113, ISO 76, ISO 281, and GB/T 9439 are reference points for verification. They do not imply that a specific product is certified. Always confirm compliance with the manufacturer or supplier.

Data Basis

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

Preliminary Technical Classification

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pressure:	Max 10 bar static housing pressure, bearing dependent on load rating
other spec:	Max shaft speed: 3000 RPM (lubrication dependent), contamination protection: IP65 standard
temperature:	-40°C to +120°C (standard), up to +200°C with special seals/lubrication

Product Specifications

Applied To / Applications

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