Clamp Arm: Weight Capacity 1-50 kg per arm

Q: What is the difference between a clamp arm and a regular clamp?

Clamp arms are integrated components of positioning fixtures with precise mechanical control and alignment features, while regular clamps are standalone tools. Clamp arms offer better repeatability, force control, and compatibility with automated systems.

Q: How do I select the right clamp arm for my application?

Consider workpiece weight/size, required clamping force, cycle time, environmental conditions, and compatibility with your fixture base. Calculate necessary force based on cutting forces and safety factors, then choose material and mechanism accordingly.

Component Specifications

Definition

The clamp arm is a critical component within industrial positioning fixtures, designed to apply precise and repeatable clamping forces to hold workpieces securely in place during manufacturing processes. It typically consists of a rigid structural element with integrated force application mechanisms, ensuring dimensional stability and preventing movement during operations like milling, drilling, welding, or inspection. Clamp arms are engineered to maintain consistent pressure without damaging workpiece surfaces while allowing for quick loading/unloading cycles.

Working Principle

The clamp arm operates on mechanical leverage principles, where an input force (manual, pneumatic, or hydraulic) is amplified through pivot points or screw mechanisms to generate higher output clamping force at the contact surface. When activated, the arm rotates or translates to bring a pressure pad or jaw into contact with the workpiece, creating friction and mechanical interference that prevents movement. Force distribution is controlled through geometry and material selection to minimize deflection under load.

Materials

Typically manufactured from medium-carbon steel (AISI 1045, 4140) or alloy steel for strength and wear resistance, with hardened contact surfaces (HRC 45-55). Alternative materials include aluminum alloys (6061-T6) for lightweight applications or stainless steel (304, 316) for corrosive environments. Pressure pads may use softer materials like polyurethane or brass to prevent workpiece damage.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Repeatability	±0.02 mm
Stroke Length	10-100 mm
Weight Capacity	1-50 kg per arm
Maximum Deflection	<0.05 mm at full load
Clamping Force Range	50-5000 N
Operating Temperature	-20°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 12164, DIN 6325, ISO 10889

Parent Products

This component is used in the following industrial products

Positioning Fixture

A specialized clamping device that precisely holds and positions trailer frame components during robotic welding operations.

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Workpiece Positioning Fixture

A mechanical device that securely holds and precisely positions workpieces during robotic welding operations.

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Engineering Analysis

Risks & Mitigation

Over-tightening causing workpiece deformation
Wear leading to force loss
Misalignment causing inaccurate positioning
Material fatigue from cyclic loading
Corrosion in harsh environments

FMEA Triads

Trigger: Wear at pivot points or contact surfaces
Failure: Reduced clamping force and positional accuracy
Mitigation: Regular inspection and lubrication; use hardened wear surfaces; implement preventive maintenance schedules

Trigger: Improper force calibration
Failure: Workpiece slippage or damage
Mitigation: Use torque-limiting devices; implement force monitoring systems; provide operator training

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Positional tolerance ±0.05 mm, force variation ±5% of set value

Test Method

Force measurement via load cell, positional accuracy via CMM, cycle testing per ISO 12164

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Clamp Arm

Manufacturer profiles associated with Clamp Arm.

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Frequently Asked Questions

What is the difference between a clamp arm and a regular clamp?