INDUSTRY COMPONENT

Ball Bearing Cage

Ball bearing cage is a precision component that separates and guides rolling elements in drawer slide mechanisms.

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Component Specifications

Definition
A ball bearing cage, also known as a ball bearing retainer or separator, is a critical component in ball bearing assemblies used in drawer slides. It maintains precise spacing between individual balls, prevents ball-to-ball contact, ensures proper load distribution, and guides balls along their raceways. In drawer slide applications, it enables smooth linear motion with minimal friction and consistent performance.
Working Principle
The cage operates by physically separating individual balls within the bearing assembly, maintaining equal spacing to prevent contact between adjacent balls. This ensures uniform load distribution across all balls, reduces friction and wear, and guides the balls along the predetermined raceway path. In drawer slides, this allows for smooth, low-friction linear movement while maintaining structural integrity under various load conditions.
Materials
Typically made from stamped steel (carbon steel or stainless steel), engineered polymers (nylon, POM, PTFE), or brass. Material selection depends on application requirements including load capacity, speed, temperature, and corrosion resistance.
Technical Parameters
  • Ball Count 6-12 balls
  • Load Capacity 10-100 kg per slide
  • Cage Thickness 0.3-1.2 mm
  • Pocket Diameter 1.5-4.0 mm
  • Friction Coefficient 0.001-0.005
  • Operating Temperature -20°C to +120°C
Standards
ISO 15, ISO 104, DIN 625-1, DIN 5412

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Ball Bearing Cage.

ball bearing cage drawer slide bearing bearing retainer ball separator linear bearing component furniture hardware precision cage Ball Bearing Cage in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Drawer Slide

Linear bearing system enabling smooth drawer extension and retraction.

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Engineering Analysis

Risks & Mitigation
  • Cage deformation under overload
  • Material fatigue from cyclic loading
  • Corrosion in humid environments
  • Improper installation causing misalignment
FMEA Triads
Trigger: Excessive load beyond design limits
Failure: Cage deformation or fracture
Mitigation: Implement load monitoring systems and use cages with higher material strength ratings
Trigger: Inadequate lubrication
Failure: Increased friction and premature wear
Mitigation: Establish regular lubrication schedules and use appropriate lubricants
Trigger: Contamination from dust or debris
Failure: Ball jamming and cage damage
Mitigation: Install protective seals and implement regular cleaning protocols

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm for pocket diameter, ±0.1 mm for overall dimensions
Test Method
ISO 15242-1 for vibration testing, ISO 14728-2 for load capacity testing, visual inspection per DIN 5415

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.

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Frequently Asked Questions

What is the primary function of a ball bearing cage in drawer slides?

The primary function is to maintain precise spacing between balls, prevent ball-to-ball contact, ensure even load distribution, and guide balls along the raceway for smooth linear motion.

How does cage material affect drawer slide performance?

Material affects durability, friction, noise, and corrosion resistance. Steel offers strength, polymers reduce noise and weight, while brass provides corrosion resistance and smooth operation.

Can damaged ball bearing cages be replaced separately?

Yes, but replacement requires precision matching to original specifications. Improper replacement can cause misalignment, increased friction, and premature failure.

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.

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