Outer Sleeve: Length Range 20-500 mm, Hardness 58-62 HRC

Component Specifications

Definition

The outer sleeve is a cylindrical housing component in a high-precision linear motion ball bushing assembly that contains and supports the ball recirculation system, maintains alignment with the shaft, and provides mounting interfaces for machine structures. It ensures precise linear movement by maintaining consistent internal geometry and surface finish for ball tracking.

Working Principle

Acts as the stationary outer raceway and housing that guides the recirculating balls along a precise linear path while maintaining proper preload and clearance with the shaft. The internal groove geometry creates continuous ball contact points that distribute load evenly across the bearing surface.

Materials

High-carbon chromium steel (SUJ2/AISI 52100) or stainless steel (AISI 440C) with case hardening to 58-62 HRC. Alternative: aluminum alloy with hardened steel inserts for lightweight applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	58-62 HRC
Length Range	20-500 mm
Straightness	0.01 mm/100 mm
Load Capacity	Dynamic: 2-15 kN, Static: 4-30 kN
Surface Roughness	Ra 0.4 μm max
Inner Diameter Tolerance	H6/H7
Outer Diameter Tolerance	h6

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 10285, DIN 636, JIS B 1539

Parent Products

This component is used in the following industrial products

High-Precision Linear Motion Ball Bushing

A high-precision linear motion ball bushing is a critical component used in general-purpose machinery to facilitate smooth, accurate linear movement along shafts or rails.

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Engineering Analysis

Risks & Mitigation

Wear and surface degradation from contamination
Thermal expansion mismatch with housing
Improper installation causing misalignment
Corrosion in harsh environments

FMEA Triads

Trigger: Contaminant ingress (dust, chips, moisture)
Failure: Increased friction, ball track wear, vibration, reduced accuracy
Mitigation: Install proper seals/wipers, implement regular cleaning protocols, use protective covers

Trigger: Improper mounting or misalignment during installation
Failure: Uneven load distribution, premature wear, binding, reduced lifespan
Mitigation: Follow manufacturer installation guidelines, use alignment tools, verify parallelism

Trigger: Inadequate lubrication
Failure: Increased friction, overheating, accelerated wear, seizure
Mitigation: Implement scheduled lubrication maintenance, use appropriate lubricants, monitor lubrication systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286

Test Method

Coordinate measuring machine (CMM) verification, surface roughness testing per ISO 4287, hardness testing per ISO 6508

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Outer Sleeve

Manufacturer profiles associated with Outer Sleeve.

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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

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Frequently Asked Questions

What is the primary function of the outer sleeve in a linear motion ball bushing?

The outer sleeve provides the structural housing that contains the ball recirculation system, maintains precise alignment with the shaft, and offers mounting interfaces for integration into machine structures while ensuring consistent linear motion.

How does material selection affect outer sleeve performance?

Material selection determines wear resistance, load capacity, and corrosion resistance. High-carbon chromium steel offers optimal hardness and durability for heavy loads, while stainless steel provides corrosion resistance for harsh environments, and aluminum reduces weight in high-speed applications.

What are the critical tolerance specifications for outer sleeves?

Critical tolerances include inner diameter (H6/H7 for proper shaft fit), outer diameter (h6 for housing fit), straightness (0.01 mm/100 mm max), and surface roughness (Ra 0.4 μm max) to ensure smooth ball movement and minimal vibration.

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.

Outer Sleeve