INDUSTRY COMPONENT

Cylinder Plug

A precision cylindrical component that seals and positions the lock cylinder housing in mechanical locking systems.

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Component Specifications

Definition
The cylinder plug is a critical cylindrical component within lock cylinder assemblies that serves multiple functions: it provides the housing for key pins and driver pins, creates a secure seal against contaminants, maintains precise alignment between the cylinder and lock housing, and ensures smooth rotational operation when actuated by the correct key. This component typically features a cylindrical body with precisely machined pin chambers, a keyway opening, and external mounting features that interface with the lock housing.
Working Principle
The cylinder plug operates on the principle of precision cylindrical sealing and rotational guidance. When the correct key is inserted, it aligns the pin stacks within the plug's chambers, allowing the plug to rotate freely within the lock cylinder housing. The plug's cylindrical geometry and tight tolerances create a secure seal that prevents dust, moisture, and other contaminants from entering the lock mechanism while maintaining the precise alignment necessary for smooth key operation and reliable locking/unlocking functions.
Materials
Typically manufactured from brass alloys (C36000, C37700) for corrosion resistance and machinability, stainless steel (304, 316) for high-security applications, or zinc alloys for cost-effective solutions. Material selection depends on security requirements, environmental conditions, and manufacturing considerations.
Technical Parameters
  • Length 30-60mm standard
  • Diameter Typically 14-20mm
  • Hardness 75-85 HRB for brass, 25-35 HRC for steel
  • Tolerance ±0.02mm
  • Keyway Type Standard or proprietary profiles
  • Pin Chambers 5-7 chambers standard
  • Surface Finish Ra 0.8-1.6μm
Standards
ISO 9001, DIN 18252, ANSI/BHMA A156.5

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cylinder Plug.

cylinder plug lock cylinder component mechanical lock parts security hardware pin tumbler mechanism lock cylinder seal brass cylinder plug lock component manufacturing Cylinder Plug in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Lock Cylinder

A mechanical component within an ignition lock assembly that houses the keyway and tumblers, enabling key insertion and rotation to engage/disengage the lock mechanism.

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Engineering Analysis

Risks & Mitigation
  • Improper sealing leading to contamination
  • Wear from repeated rotation causing tolerance loss
  • Corrosion in harsh environments
  • Keyway damage from forced entry attempts
  • Manufacturing defects affecting pin alignment
FMEA Triads
Trigger: Material fatigue from repeated rotational cycles
Failure: Cracking or deformation of the plug body
Mitigation: Use fatigue-resistant materials, implement regular maintenance schedules, design with adequate wall thickness
Trigger: Corrosion due to environmental exposure
Failure: Seizure or binding of the plug within the housing
Mitigation: Select appropriate corrosion-resistant materials, apply protective coatings, implement environmental sealing
Trigger: Manufacturing tolerance stack-up
Failure: Poor key operation or binding
Mitigation: Implement statistical process control, use precision machining equipment, conduct 100% functional testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.02mm for critical dimensions, ±0.05mm for non-critical features
Test Method
Dimensional verification via CMM, functional testing with master keys, rotational torque testing, environmental exposure testing per ANSI/BHMA standards

Buyer Feedback

★★★★☆ 4.9 / 5.0 (34 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Cylinder Plug meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Cylinder Plug arrived with full certification."

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Frequently Asked Questions

What is the primary function of a cylinder plug in a lock mechanism?

The cylinder plug serves three primary functions: it houses the pin tumbler mechanism, provides a secure seal against environmental contaminants, and maintains precise alignment for smooth key operation within the lock cylinder assembly.

Can cylinder plugs be interchanged between different lock brands?

Generally no, as cylinder plugs are designed with brand-specific dimensions, pin chamber configurations, and keyway profiles. However, some standardized systems exist within certain product families or security grades that allow limited interchangeability.

What materials are commonly used for manufacturing cylinder plugs?

Brass alloys are most common due to their excellent machinability and corrosion resistance. Stainless steel is used for high-security applications, while zinc alloys are employed for cost-sensitive applications where extreme durability is not required.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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