INDUSTRY COMPONENT

Locking Sleeve

A precision locking sleeve used in mechanical assemblies to secure rotating shafts or components in female machine halves.

Component Specifications

Definition
A cylindrical mechanical component designed to provide secure axial and radial locking between a shaft and a female housing or machine half. It typically features a tapered or split design that creates interference fit when compressed, preventing relative movement through friction and mechanical engagement. Used in power transmission systems, coupling assemblies, and precision machinery where reliable torque transmission and alignment are critical.
Working Principle
Works on the principle of mechanical interference and friction locking. When installed, the sleeve is compressed radially (often via tightening bolts or hydraulic pressure), causing it to grip both the internal shaft and external housing simultaneously. This creates a rigid connection without requiring keyways or splines, allowing for easy assembly/disassembly while maintaining high torque capacity and concentricity.
Materials
Typically manufactured from alloy steels (e.g., 42CrMo4, 34CrNiMo6) or stainless steels (e.g., AISI 304, 316) with surface treatments like nitriding, hardening (HRC 45-55), or zinc plating for corrosion resistance. High-precision applications may use bearing steels or specialized alloys.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Taper Ratio1:10 to 1:30
Surface FinishRa 1.6-3.2 μm
Torque CapacityUp to 5000 Nm
Runout Tolerance<0.02 mm
Bore Diameter Range10-200 mm
Operating Temperature-40°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 12132, DIN 6885, ISO 286-2

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Improper installation causing slippage
  • Over-torquing leading to sleeve deformation
  • Corrosion in harsh environments
  • Fatigue failure under cyclic loading
  • Thermal expansion mismatch
FMEA Triads
Trigger: Insufficient tightening torque
Failure: Shaft slippage under load
Mitigation: Use calibrated torque wrenches, follow manufacturer specifications, implement torque verification procedures
Trigger: Contamination on mating surfaces
Failure: Reduced friction coefficient and holding power
Mitigation: Thorough cleaning before assembly, use protective caps during storage, maintain clean work environment
Trigger: Material fatigue from cyclic loading
Failure: Crack propagation and sudden failure
Mitigation: Regular inspection schedules, load monitoring, replacement at recommended intervals, use of fatigue-resistant materials

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
ISO IT6/IT7 for bore, concentricity within 0.02 mm TIR, surface hardness HRC 45-55
Test Method
Torque testing per ISO 12132, dimensional verification with CMM, material certification to EN 10204-3.1, fatigue testing under cyclic loads

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Locking Sleeve

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Shenzhen Qixingyuan Machinery Equipment Co., LTD.
Guangdong, CN
Also makes: Transmission System, Spray System, Transmission and 4 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Spacer and Locking Sleeves”
View source page ↗ qxymachinery.com · recorded 2026-09-15

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Frequently Asked Questions

What are the main advantages of using locking sleeves over traditional keyed connections?

Locking sleeves provide zero-backlash connection, higher torque transmission, easier installation/removal, better concentricity, and eliminate stress concentrations from keyways.

How do you properly install a locking sleeve?

Clean all surfaces, align components precisely, insert sleeve, tighten bolts gradually in cross pattern to specified torque, and verify runout. Never hammer or force installation.

Can locking sleeves be reused?

Yes, most high-quality locking sleeves can be reused multiple times if undamaged, though inspection for wear, deformation, or surface damage is recommended before reinstallation.

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.

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