Locking Cam: Operating Torque 5-50 Nm, Weight 0.1-2 kg

Component Specifications

Definition

A locking cam is a precision-engineered mechanical component featuring an eccentric or specially profiled lobe that rotates to create a wedging or clamping action. When engaged, it applies controlled force to lock movable machine elements (such as slides, tables, or arms) in a fixed position, preventing unintended movement during operation. It's commonly integrated into manual or automated locking systems in industrial machinery.

Working Principle

The locking cam operates on the principle of eccentric rotation. As the cam rotates, its off-center lobe profile changes the radial distance from the rotation axis. At the 'locked' position, this increased radius creates mechanical interference or wedging against a mating surface (like a slot, pin, or housing), generating friction and compressive force that immobilizes the connected component. Disengagement occurs by rotating the cam back to its 'unlocked' profile, releasing the interference.

Materials

Typically manufactured from hardened alloy steels (e.g., AISI 4140, 4340) or tool steels (e.g., D2, S7) for wear resistance and strength. Surface treatments may include nitriding, chrome plating, or black oxide coating to enhance durability and corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	0.1-2 kg
Cam Type	Eccentric or Profile
Hardness	45-60 HRC
Mounting	Shaft, flange, or integrated
Locking Force	200-5000 N (configurable)
Rotation Angle	90° or 180° typical
Operating Torque	5-50 Nm

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 9001, DIN 6885

Parent Products

This component is used in the following industrial products

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Engineering Analysis

Risks & Mitigation

Wear over time reducing locking force
Improper installation causing misalignment
Over-torquing leading to cam or shaft damage
Corrosion in harsh environments

FMEA Triads

Trigger: Abrasive contamination or lack of lubrication
Failure: Excessive wear on cam lobe, resulting in reduced locking force and slippage
Mitigation: Implement regular cleaning and lubrication schedules; use sealed or protected designs in dirty environments

Trigger: Over-torquing during operation
Failure: Cam shaft deformation or shearing, causing complete mechanism failure
Mitigation: Install torque limiters or use calibrated tools; provide clear operational torque specifications

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm on critical dimensions (e.g., lobe profile, bore)

Test Method

Functional testing under load (e.g., cyclic engagement/disengagement with force measurement), hardness verification (Rockwell C), and dimensional inspection via CMM.

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.

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Manufacturers of Locking Cam

Manufacturer profiles associated with Locking Cam.

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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 main function of a locking cam?

Its primary function is to securely lock movable machine parts in a specific position, ensuring stability and precision during operations like machining, assembly, or testing.

How do you maintain a locking cam?

Regularly inspect for wear, clean to remove debris, lubricate pivot points with appropriate grease, and check for proper engagement force. Replace if excessive play or damage is detected.

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.

Locking Cam