Industry-Verified Manufacturing Data (2026)

Locking Device

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Locking Device used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Locking Device is characterized by the integration of Locking Collar Body and Set Screws. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical component within an end bearing assembly that secures bearing elements in position to prevent axial movement or rotation.

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Product Specifications

Technical details and manufacturing context for Locking Device

Definition
A locking device is a critical component of an end bearing assembly designed to maintain precise positioning of bearing elements. It prevents unwanted axial displacement or rotational slippage of bearing components under operational loads, ensuring proper alignment and load distribution within the assembly. This device typically interfaces with bearing races, shafts, or housings to provide secure mechanical fixation.
Working Principle
The locking device operates by creating mechanical interference or friction between bearing components. Common mechanisms include threaded locking collars that apply axial pressure, set screws that engage with shafts or grooves, or clamping mechanisms that compress bearing elements. When properly tightened, the device generates sufficient holding force to counteract operational forces that might cause movement.
Common Materials
Carbon Steel, Alloy Steel, Stainless Steel
Technical Parameters
  • Bore diameter that matches the shaft size for proper fitment (mm) Standard Spec
Components / BOM
  • Locking Collar Body
    Main structural component that surrounds the shaft and provides mounting surface for locking elements
    Material: steel
  • Set Screws
    Threaded fasteners that apply pressure against the shaft to create friction lock
    Material: alloy steel
  • Locking Nuts
    Threaded fasteners that secure the locking collar in position through axial compression
    Material: steel
Engineering Reasoning
0-150 MPa clamping pressure, -40°C to 120°C temperature range
Shear stress exceeding 450 MPa yield strength, axial displacement exceeding 0.05 mm
Design Rationale: Plastic deformation due to cyclic loading exceeding material fatigue limit (S-N curve at 10^7 cycles: 300 MPa for steel)
Risk Mitigation (FMEA)
Trigger Thermal expansion mismatch between locking device (CTE: 11.5×10^-6/°C) and shaft (CTE: 12.2×10^-6/°C)
Mode: Loss of interference fit leading to 0.1 mm radial play
Strategy: Differential thermal expansion compensation through tapered sleeve design with 0.02 mm/°C compensation factor
Trigger Vibration-induced fretting at 50-200 Hz resonance frequency
Mode: Surface micro-wear generating 15 μm debris particles
Strategy: Anti-fretting coating application (MoS2, 25 μm thickness) with 0.15 friction coefficient

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Locking Device.

locking collar for bearing assembly mechanical bearing locking device set screw locking collar stainless steel bearing lock anti-rotation locking device machinery

Applied To / Applications

This component is essential for the following industrial systems and equipment:

End Bearing Assembly
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Housing / Pillow Block
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 100 bar
other spec: Max axial load: 50 kN, Max rotational speed: 3000 rpm
temperature: -40°C to 150°C
Media Compatibility
✓ Lubricating oils ✓ Grease-packed environments ✓ Clean hydraulic fluids
Unsuitable: High-concentration abrasive slurries
Sizing Data Required
  • Shaft diameter
  • Required axial load capacity
  • Bearing housing dimensions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wear and deformation
Cause: Repeated mechanical stress, improper installation torque, or material fatigue leading to loss of locking force and dimensional changes.
Corrosion and contamination
Cause: Exposure to harsh environments (moisture, chemicals), inadequate protective coatings, or ingress of debris causing seizure or reduced effectiveness.
Maintenance Indicators
  • Visible deformation, cracks, or discoloration on the locking device surface
  • Audible rattling or movement in the secured assembly indicating loss of clamping force
Engineering Tips
  • Apply proper installation torque using calibrated tools and follow manufacturer specifications to prevent over-tightening or under-tightening
  • Implement regular inspection and cleaning schedules, and use appropriate anti-corrosion coatings or materials suited for the operating environment

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI/BHMA A156.5 - Auxiliary Locks and Associated Products DIN 18251 - Locking Devices for Doors and Windows
Manufacturing Precision
  • Bore Diameter: +/-0.05mm
  • Surface Flatness: 0.1mm
Quality Inspection
  • Dye Penetrant Test for Surface Defects
  • Hardness Test (Rockwell C Scale)

Factories Producing Locking Device

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

S Sourcing Manager from United Arab Emirates Jan 20, 2026
★★★★★
"The technical documentation for this Locking Device is very thorough, especially regarding technical reliability."
Technical Specifications Verified
P Procurement Specialist from Australia Jan 17, 2026
★★★★☆
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Locking Device so far. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Singapore Jan 14, 2026
★★★★★
"Testing the Locking Device now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

8 sourcing managers are analyzing this specification now. Last inquiry for Locking Device from Poland (33m ago).

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Frequently Asked Questions

What materials are available for this locking device?

Our locking devices are manufactured in carbon steel, alloy steel, and stainless steel to suit different environmental conditions and load requirements in machinery applications.

How does this locking device prevent bearing movement?

The device uses a locking collar body with set screws and locking nuts to create a secure mechanical clamp around the bearing, preventing both axial movement and rotation within the end bearing assembly.

What are the main components in the BOM for this product?

The bill of materials includes the locking collar body, set screws for adjustment and securing, and locking nuts to ensure the assembly remains tight under operational vibrations and loads.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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