Test Head / Clamping Mechanism for Pressure Testing Units

Product Specifications

Technical details and manufacturing context for Test Head / Clamping Mechanism

Definition

The test head/clamping mechanism is a critical component of pressure testing units used to securely hold test specimens in place during pressure testing operations. It ensures proper sealing and alignment while applying controlled clamping force to prevent leaks or specimen movement under pressure. This mechanism typically interfaces with the pressure source and measurement systems to create a sealed testing environment. The mechanism is designed to accommodate a range of test pressures and specimen sizes, with clamping force adjustable between 50 and 200 kN to exceed the force exerted by the test pressure, thereby preventing leakage. Operating pressure is specified between 1.0 and 1.6 MPa. The test pressure range spans 0.5 to 10 MPa, with higher pressures requiring reinforced clamping. Clamping stroke ranges from 50 to 150 mm to accommodate specimen height variations, and positioning accuracy is maintained within ±0.05 mm for repeatable test conditions. Clamping speed is adjustable from 5 to 20 mm/s to optimize cycle time. The mechanism requires a three-phase AC supply voltage of 220–380 V (IEC 60038) and consumes 1.5–5.5 kW depending on hydraulic pump size. Operating temperature is limited to -10 to 60°C, as seals degrade above 60°C. Ingress protection is rated IP54 to IP65 (IEC 60529), with IP65 suitable for washdown environments. The primary material is hardened 45# steel (GB/T 699) for wear resistance, and the unit weighs 150–350 kg, requiring crane installation for heavier configurations. Sealing elastomers are used for effective sealing. This component is essential for ensuring the integrity and safety of pressure testing procedures across various industrial applications. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The clamping mechanism applies mechanical force through hydraulic, pneumatic, or mechanical means to secure the test specimen against the test head. The test head provides the interface surface and sealing elements that contain the test pressure. During operation, the mechanism maintains consistent clamping force while allowing for pressure application and monitoring through integrated ports or connections. The clamping force is set to exceed the force generated by the test pressure to prevent leakage. The mechanism's stroke and speed are adjustable to accommodate different specimen heights and optimize cycle times. Positioning accuracy ensures repeatable alignment for consistent test results.

Common Materials

Stainless steel, Alloy steel, Sealing elastomers

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clamping Force	50–200 kN	Must exceed test pressure force to prevent leakage.
Operating Pressure	1.0–1.6 MPa
Test Pressure Range	0.5–10 MPa	Higher pressures require reinforced clamping.
Clamping Stroke	50–150 mm	Accommodates specimen height variations.
Positioning Accuracy	±0.05 mm	Ensures repeatable test conditions.
Clamping Speed	5–20 mm/s	Faster speeds reduce cycle time.
Supply Voltage	220–380 V AC	Three-phase for higher power.IEC 60038
Power Consumption	1.5–5.5 kW	Depends on hydraulic pump size.
Operating Temperature	-10–60 °C	Seals degrade above 60°C.
Ingress Protection	IP54–IP65	IP65 for washdown environments.IEC 60529
Material	45# steel	Hardened for wear resistance.GB/T 699
Weight	150–350 kg	Heavier units require crane installation.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Clamping Jaw Part
Applies direct force to secure the test specimen

Material: Hardened steel
Sealing Gasket Part
Creates pressure-tight seal between test head and specimen

Material: Synthetic rubber or polymer
Actuation Mechanism
Provides the force to operate the clamping jaws

Material: Steel alloy
Pressure Port Part
Interface for connecting pressure source and measurement devices

Material: Stainless steel

Applied To / Applications

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

Pressure Testing Unit

View system integration details

Manufacturers of Test Head / Clamping Mechanism

Manufacturer profiles associated with Test Head / Clamping Mechanism.

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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 · Page last updated 6 September 2026

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Frequently Asked Questions

What is the function of the test head/clamping mechanism?

It secures test specimens in place during pressure testing, applying controlled clamping force to prevent leaks or movement under pressure.

What clamping force range is available?

The clamping force is adjustable from 50 to 200 kN, designed to exceed the force exerted by the test pressure to prevent leakage.

What are the operating pressure and test pressure ranges?

Operating pressure is 1.0–1.6 MPa, and test pressure range is 0.5–10 MPa. Higher test pressures require reinforced clamping.

What are the electrical requirements?

Supply voltage is 220–380 V AC (three-phase, IEC 60038), with power consumption of 1.5–5.5 kW depending on hydraulic pump size.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10,000 psi (690 bar)
other spec:	Max clamping force: 50 kN, Stroke length: 0-100 mm, Repeatability: ±0.01 mm
temperature:	-20°C to 150°C

Test Head / Clamping Mechanism

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards