Ball Bearing Cage: Load Capacity 10-100 kg per slide

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

Parameter	Typical range	Notes & selection driver
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

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 15, ISO 104, DIN 625-1, DIN 5412

Parent Products

This component is used in the following industrial products

Drawer Slide

A drawer slide is a precision-engineered mechanical component used in furniture manufacturing to facilitate the smooth, stable, and quiet movement of drawers.

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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

Typical Suppliers & Equivalents

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

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

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Manufacturers of Ball Bearing Cage

Manufacturer profiles associated with Ball Bearing Cage.

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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.

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.

Ball Bearing Cage