Industry-Verified Manufacturing Data (2026)

Tumbler Set

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Tumbler Set used in the Motor Vehicle Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Tumbler Set is characterized by the integration of Driver Pins and Key Pins. In industrial production environments, manufacturers listed on CNFX commonly emphasize Brass alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A set of precision pins or tumblers within an ignition lock cylinder that aligns with the key cuts to enable rotation and vehicle starting.

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Product Specifications

Technical details and manufacturing context for Tumbler Set

Definition
The tumbler set is a critical security component within the ignition lock assembly of motor vehicles. It consists of multiple precisely machined pins or tumblers arranged in a specific configuration that corresponds to the unique cuts on the vehicle's key. When the correct key is inserted, the tumblers align at the shear line, allowing the lock cylinder to rotate and engage the ignition switch mechanism. This component directly determines the vehicle's anti-theft security level and key compatibility.
Working Principle
The tumbler set operates on the pin-tumbler principle. Each tumbler consists of a driver pin and a key pin. When no key or an incorrect key is inserted, the driver pins block the shear line, preventing cylinder rotation. When the correct key is inserted, the key pins are raised to align all driver pins exactly at the shear line, creating a clear path for the cylinder plug to rotate within the housing, thereby activating the ignition switch.
Common Materials
Brass alloy, Stainless steel, Nickel-plated steel
Technical Parameters
  • Tumbler diameter typically ranges from 2.0-3.0mm with length variations of 0.5mm increments to create different pin heights corresponding to key cut depths (mm) Standard Spec
Components / BOM
  • Driver Pins
    Upper pins that block the shear line when no key is inserted, providing security
    Material: Stainless steel
  • Key Pins
    Lower pins that contact the key cuts and determine the required alignment height
    Material: Brass alloy
  • Tumbler Springs
    Provide return force to maintain pins in default locked position
    Material: Spring steel
Engineering Reasoning
0.5-2.5 mm pin displacement, 0.1-0.3 N·m rotational torque, 0.01-0.05 mm manufacturing tolerance
Pin shear stress exceeding 420 MPa (SAE 1045 steel yield strength), wear depth >0.1 mm, misalignment >0.15 mm from keyway centerline
Design Rationale: Adhesive wear (Archard's wear equation: V = K·W·L/H) at pin-key interfaces due to cyclic sliding contact under Hertzian contact pressures exceeding 1.2 GPa, leading to plastic deformation and loss of dimensional precision
Risk Mitigation (FMEA)
Trigger Contaminant ingress (ISO 12103-1 A4 fine test dust) accumulating at 0.05 g/1000 cycles
Mode: Increased rotational resistance exceeding 0.4 N·m, preventing cylinder rotation
Strategy: Sealed labyrinth geometry with 0.02 mm clearance, IP67-rated dust seals, centrifugal contaminant ejection channels
Trigger Material fatigue at pin shear planes due to 10^6+ stress cycles at 350 MPa alternating stress
Mode: Pin fracture at 45° shear plane, causing complete loss of rotational engagement
Strategy: Shot peening to induce 200-300 MPa compressive residual stress, case hardening to 60 HRC surface hardness with 0.3 mm case depth

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tumbler Set.

Lock Pins Cylinder Tumblers Pin Set ignition lock cylinder tumbler set automotive key pins and driver pins brass alloy tumbler pins for vehicles replacement tumblers for car ignition precision key pins for motor manufacturing

Applied To / Applications

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

Ignition Lock Assembly
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (mechanical component)
other spec: Key insertion force: 0.5-2.5 N, Rotation torque: 0.1-0.5 Nm, Pin tolerance: ±0.01 mm
temperature: -40°C to 120°C
Media Compatibility
✓ Automotive ignition systems ✓ Industrial machinery locks ✓ Marine ignition systems
Unsuitable: High-vibration environments without dampening
Sizing Data Required
  • Keyway profile specification
  • Number of tumblers required
  • Cylinder bore diameter

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Wear and material degradation
Cause: Continuous friction and impact during operation leading to surface wear, material fatigue, and eventual failure of tumbler components
Misalignment and imbalance
Cause: Improper installation, foundation settling, or component wear causing uneven loading, vibration, and accelerated failure of bearings and seals
Maintenance Indicators
  • Excessive vibration or unusual noise during operation indicating imbalance or bearing failure
  • Visible material leakage or abnormal temperature rise suggesting seal failure or lubrication issues
Engineering Tips
  • Implement regular alignment checks and vibration analysis to detect early imbalance issues before catastrophic failure
  • Establish a proactive lubrication schedule with proper lubricant selection and contamination control to minimize wear

Compliance & Manufacturing Standards

Reference Standards
ISO 4531-1:2022 - Glassware for catering services ASTM C162-05(2019) - Standard Terminology of Glass and Glass Products CE EN 12729:2003 - Food contact materials and articles
Manufacturing Precision
  • Volume capacity: +/- 2% of nominal volume
  • Wall thickness uniformity: +/- 0.5mm across surface
Quality Inspection
  • Thermal shock resistance test (hot-cold cycling)
  • Lead and cadmium migration test for food safety

Factories Producing Tumbler Set

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

P Project Engineer from United Arab Emirates Jan 17, 2026
★★★★★
"The technical documentation for this Tumbler Set is very thorough, especially regarding technical reliability."
Technical Specifications Verified
S Sourcing Manager from Australia Jan 14, 2026
★★★★★
"Reliable performance in harsh Motor Vehicle Manufacturing environments. No issues with the Tumbler Set so far."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 11, 2026
★★★★★
"Testing the Tumbler Set 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.”

7 sourcing managers are analyzing this specification now. Last inquiry for Tumbler Set from UAE (51m ago).

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Frequently Asked Questions

What materials are used in these tumbler sets for durability?

Our tumbler sets are manufactured from high-quality brass alloy, stainless steel, and nickel-plated steel components to ensure corrosion resistance, precise alignment, and long-term reliability in motor vehicle ignition systems.

How do these tumbler sets improve vehicle security?

The precision-cut driver pins and key pins create unique key combinations that align perfectly with ignition lock cylinders, preventing unauthorized vehicle starting while ensuring smooth rotation for legitimate key operation.

Are these tumbler sets compatible with different vehicle models?

Yes, our tumbler sets are engineered to meet OEM specifications for various motor vehicle manufacturers. They include standardized BOM components (driver pins, key pins, tumbler springs) that can be customized for specific ignition system requirements.

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 Motor Vehicle Manufacturing sector.

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