Clamping Plate: Thickness tolerance ±0.05 mm

Component Specifications

Definition

A clamping plate is a critical component within core clamping systems used in industrial machinery, particularly in injection molding, die casting, and CNC machining applications. It functions as a rigid interface between the machine's clamping mechanism and the mold or workpiece, ensuring uniform pressure distribution and precise alignment during high-force operations. Engineered to withstand significant mechanical stress and thermal cycling, clamping plates maintain dimensional stability under extreme conditions to prevent deflection and ensure repeatable production quality.

Working Principle

The clamping plate operates by transmitting hydraulic or mechanical clamping force from the machine's platen through its surface to the mold or workpiece. It distributes this force evenly across the contact area to prevent localized stress concentrations. During operation, the plate maintains parallelism and flatness to ensure proper mold closure and alignment, while its mounting holes and alignment features secure the mold in precise position relative to the machine's injection or forming axis.

Materials

Typically manufactured from high-strength alloy steels (such as 4140, 4340, or P20 tool steel) or pre-hardened steels with hardness ranging from 28-32 HRC. Premium versions may use stainless steels (like 420 or 17-4 PH) for corrosion resistance, or aluminum alloys for reduced weight in specific applications. Surface treatments include nitriding, chrome plating, or hard coating to enhance wear resistance and reduce friction.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flatness	0.02 mm/m
Hardness	28-32 HRC (typical)
Parallelism	0.03 mm total
Surface Finish	Ra 0.8 μm or better
Thermal Stability	Maintains dimensional accuracy up to 150°C
Thickness Tolerance	±0.05 mm

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

Standards

DIN 55189, ISO 2768-mK

Parent Products

This component is used in the following industrial products

Core Clamping System

A mechanical assembly that securely clamps and holds the magnetic core in place within a medium voltage current transformer.

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Blade Holder/Assembly

A mechanical assembly that securely positions and holds the cutting blade within a precision shear system.

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Engineering Analysis

Risks & Mitigation

Fatigue failure from cyclic loading
Thermal distortion in high-temperature applications
Wear-induced loss of flatness
Improper installation causing misalignment
Corrosion in humid environments

FMEA Triads

Trigger: Excessive cyclic loading beyond material fatigue limits
Failure: Crack propagation leading to catastrophic plate fracture
Mitigation: Implement regular non-destructive testing (ultrasonic or magnetic particle inspection), use materials with higher fatigue strength, and maintain proper force distribution through regular flatness checks

Trigger: Thermal expansion mismatch between plate and mold materials
Failure: Warping and loss of parallelism causing mold misalignment
Mitigation: Use materials with similar thermal expansion coefficients, incorporate thermal isolation layers, and implement controlled heating/cooling cycles during operation

Trigger: Abrasive wear from particulate contamination
Failure: Loss of surface flatness and dimensional accuracy
Mitigation: Implement proper sealing systems, use wear-resistant surface treatments (nitriding or hard coating), and maintain clean operating environments

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 2768-mK, flatness within 0.02 mm/m, parallelism within 0.03 mm total

Test Method

Coordinate measuring machine (CMM) verification, surface plate inspection with dial indicators, ultrasonic thickness testing, hardness testing per Rockwell scale, non-destructive testing for internal defects

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

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Manufacturers of Clamping Plate

Manufacturer profiles associated with Clamping Plate.

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Frequently Asked Questions

What is the primary function of a clamping plate in core clamping systems?

The clamping plate serves as the critical interface that distributes clamping force evenly across the mold or workpiece, ensuring secure fixation, proper alignment, and preventing deflection during high-pressure machining or molding operations.

How do I select the appropriate material for a clamping plate?

Material selection depends on application requirements: alloy steels (4140/4340) for high-strength applications, pre-hardened tool steels for wear resistance, stainless steels for corrosive environments, and aluminum alloys for weight-sensitive applications where lower forces are involved.

What maintenance is required for clamping plates?

Regular inspection for surface wear, flatness verification, cleaning of mounting surfaces, checking for stress cracks, and ensuring proper lubrication of alignment features. Thermal cycling applications require more frequent dimensional checks.

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.

Clamping Plate