Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Recirculating Ball/Roller Bearings Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Recirculating ball/roller bearings are precision linear motion components used in linear guide systems, where balls or rollers circulate through a raceway to provide smooth, low-friction linear movement. They consist of a bearing block (carriage), recirculating elements (balls or rollers), end caps, seals, and a guide rail. The design allows infinite travel length by continuously recirculating the rolling elements through a closed path within the carriage, maintaining consistent contact and load distribution.

Working Principle

The working principle involves rolling elements (balls or rollers) that circulate continuously within a closed loop inside the bearing carriage. As the carriage moves along the guide rail, the rolling elements roll between the carriage and rail surfaces, then recirculate through return channels to maintain continuous motion. This recirculation mechanism enables unlimited linear travel while minimizing friction and wear.

Materials

Bearing blocks: Carbon steel (S45C, S55C) or stainless steel (SUS440C, SUS304). Rolling elements: Chrome steel (GCr15), stainless steel, or ceramic (Si3N4). Guide rails: Carbon steel with induction hardening (HRC 58-62) or stainless steel. Seals: Nitrile rubber (NBR) or polyurethane.

Technical Parameters

Rigidity 200-800 N/μm
Travel Speed Up to 5 m/s
Load Capacity Dynamic: 10-100 kN, Static: 15-150 kN
Repeatability ±0.001-0.01 mm
Precision Grade Normal (C), High (H), Precision (P), Ultra-precision (UP)
Lubrication Interval 500-5,000 km depending on conditions
Operating Temperature -30°C to +120°C

Standards

ISO 14728, DIN 645, JIS B 1192

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Recirculating Ball/Roller Bearings.

Parent Products

This component is used in the following industrial products

Linear Guide System

A precision mechanical system that provides smooth, accurate linear motion for machine tool components.

View Product Details

Engineering Analysis

Risks & Mitigation

Contamination leading to premature wear
Inadequate lubrication causing seizure
Misalignment reducing precision and lifespan
Overload beyond rated capacity
Vibration-induced fatigue failure

FMEA Triads

Trigger: Contamination from dust, chips, or fluids
Failure: Increased friction, scoring of raceways, premature wear
Mitigation: Install proper seals, use protective covers, implement regular cleaning protocols

Trigger: Insufficient or improper lubrication
Failure: Metal-to-metal contact, overheating, seizure
Mitigation: Follow manufacturer lubrication schedules, use recommended lubricants, install automatic lubrication systems

Trigger: Misalignment during installation
Failure: Uneven load distribution, reduced precision, accelerated wear
Mitigation: Use precision alignment tools, follow installation procedures, verify parallelism within 0.01 mm/m

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

ISO 286-1:2010 for dimensional tolerances, ISO 1101:2017 for geometric tolerances

Test Method

ISO 14728-1: Dynamic load testing, ISO 14728-2: Static load testing, vibration analysis, precision measurement using laser interferometers

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

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.

Related Components

Inspection Frame

Structural support component in automated fabric inspection systems that holds cameras, sensors, and lighting for defect detection.

Machine Frame

The rigid structural foundation of a CNC wood router that provides stability, vibration damping, and precision alignment for cutting operations.

pH Sensor Assembly

Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications

Load Cell Assembly

Precision load cell assembly for automated powder dispensing systems

Frequently Asked Questions

What is the difference between recirculating ball and recirculating roller bearings?

Recirculating ball bearings use spherical balls as rolling elements, offering lower friction and higher speeds. Recirculating roller bearings use cylindrical rollers, providing higher load capacity and rigidity but slightly higher friction.

How often should recirculating bearings be lubricated?

Lubrication intervals depend on operating conditions: typically 500-5,000 km of travel. High-speed, high-load, or contaminated environments require more frequent lubrication (every 500-1,000 km), while clean, moderate conditions allow longer intervals (3,000-5,000 km).

Can recirculating bearings handle moment loads?

Yes, but capacity varies by design. Four-row ball bearings handle moderate moments, while roller bearings with multiple contact points provide better moment load resistance. Always check manufacturer specifications for specific moment load ratings.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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.

Recirculating Ball/Roller Bearings