Structured Manufacturing Data (2026)

Bearing block

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Bearing block used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Bearing block is characterized by the integration of Mounting surface and Bearing housing bore. In industrial production environments, manufacturers listed on CNFX commonly emphasize Cast iron construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A housing component that supports and aligns linear bearings within a guide system.

Product Specifications

Technical details and manufacturing context for Bearing block

Definition
A bearing block is a structural component in linear bearing/guide systems that provides mounting, alignment, and support for linear bearings. It ensures proper positioning and load distribution along the guide rail, maintaining precision and stability in linear motion applications.
Working Principle
The bearing block houses linear bearings that roll or slide along a guide rail. It transfers loads from the moving carriage to the stationary structure while maintaining alignment through precision mounting surfaces and fastening mechanisms.
Common Materials
Cast iron, Aluminum alloy, Steel
Technical Parameters
  • Mounting hole spacing and dimensions for compatibility with linear bearings and guide rails (mm) Customizable
Components / BOM
  • Mounting surface Part
    Provides flat, precision-machined surface for attaching to machine structure
    Material: Cast iron or steel
  • Bearing housing bore Part
    Precision bore that holds and aligns the linear bearing
    Material: Hardened steel
  • Mounting holes Part
    Holes for fasteners to secure the block to the machine structure
    Material: Same as block material
  • Seal grooves Part
    Grooves for installing seals to protect bearings from contamination
    Material: Same as block material

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bearing block.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 10 MPa static load, 5 MPa dynamic load
other spec: Max linear speed: 2 m/s, lubrication interval: 1000 km travel
temperature: -40°C to +120°C (standard), up to +200°C with special materials
Media Compatibility
✓ Industrial lubricants (grease/oil) ✓ Clean air environments ✓ Water-based coolants
Unsuitable: Abrasive slurry with >5% solids concentration
Sizing Data Required
  • Bore diameter of linear bearing
  • Maximum dynamic load requirement
  • Mounting configuration (flange, block, pillow)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue spalling
Cause: Cyclic loading exceeding material endurance limit, often due to improper preload, misalignment, or shock loads.
Lubrication failure
Cause: Insufficient or contaminated lubricant leading to adhesive wear, overheating, and accelerated degradation.
Maintenance Indicators
  • Excessive vibration or audible grinding/rumbling noise
  • Abnormal temperature rise detected via thermal imaging or touch
Engineering Tips
  • Implement precision laser alignment during installation and periodic checks to minimize radial/axial loads
  • Establish condition-based lubrication program using proper viscosity oil/grease with contamination control measures

Compliance & Manufacturing Standards

Reference Standards
ISO 1132-1:2000 (Rolling bearings - Tolerances - Part 1: Terms and definitions) ANSI/ABMA 7:1995 (Tapered Roller Bearings - Radial Internal Clearance) DIN 5412-1:2016 (Rolling bearings - Bearing blocks - Part 1: Pillow blocks, metric series)
Manufacturing Precision
  • Bore diameter: +/-0.01mm (IT6 grade)
  • Mounting surface flatness: 0.05mm per 100mm
Quality Inspection
  • Dimensional verification with CMM (Coordinate Measuring Machine)
  • Ultrasonic testing for internal material defects

Factories Producing Bearing block

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are available for bearing blocks in machinery manufacturing?

Our bearing blocks are manufactured in three primary materials: cast iron for maximum durability and vibration damping, aluminum alloy for lightweight applications requiring corrosion resistance, and steel for high-strength industrial environments.

How do bearing blocks support linear bearings in guide systems?

Bearing blocks provide rigid housing with precise bearing housing bores that maintain proper alignment of linear bearings. The mounting surface ensures stable attachment to machinery, while mounting holes and seal grooves protect against contamination and misalignment.

What are the key components of a bearing block's bill of materials (BOM)?

The essential BOM components include: bearing housing bore for linear bearing fit, mounting holes for secure installation, precision mounting surface for alignment stability, and seal grooves for protective sealing against debris and lubricant retention.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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