Die Holder/Adapter Plate

Product Specifications

Technical details and manufacturing context for Die Holder/Adapter Plate

Definition

The die holder/adapter plate is a critical component within a die set assembly that serves as the mounting platform for the die itself. It provides a rigid, precisely machined surface to which the die is attached, ensuring proper alignment and stability during stamping, punching, or forming operations. The adapter plate function allows the die set to interface with different types or sizes of presses by providing standardized mounting holes or features. This plate is typically manufactured from tool steel, alloy steel, or pre-hardened steel, with material grades such as 45#, 40Cr, or Cr12MoV, depending on strength and wear requirements. Key parameters include plate thickness ranging from 20 to 60 mm, hardness of 28–32 HRC (tested per GB/T 230.1), flatness and parallelism of 0.02–0.05 mm (per ISO 1101), and surface roughness of 0.8–1.6 μm Ra (per ISO 1302). The plate's maximum operating temperature is 200–300 °C, and maximum operating pressure is 100–250 MPa. Weight ranges from 50 to 200 kg. Mounting hole diameter is 10–20 mm (per ISO 273), and mounting hole pitch is 80–200 mm. Corrosion resistance is specified as salt spray resistance of 24–72 hours (per ISO 9227). These values are reference ranges and must be verified for the specific model and application. The plate is bolted or clamped to the press ram (upper) or bolster plate (lower), transmitting force while maintaining alignment. It is essential for die set integrity and press compatibility. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The die holder/adapter plate functions by being bolted or clamped to the press ram (upper) or bolster plate (lower). It provides a flat, parallel surface with precisely located holes or slots that accept the die components. During operation, it transmits the force from the press through the die to the workpiece while maintaining alignment and preventing deflection. The plate's rigidity and flatness ensure even pressure distribution, and its mounting features allow compatibility with various press types. Proper installation and periodic verification of flatness, parallelism, and mounting hole alignment are essential to prevent misalignment and premature wear.

Common Materials

Tool steel, Alloy steel, Pre-hardened steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Plate Thickness	20–60 mm	Determines rigidity and deflection under load.
Hardness	28–32 HRC	Higher hardness improves wear resistance.GB/T 230.1
Flatness	0.02–0.05 mm	Critical for uniform die mounting.ISO 1101
Parallelism	0.02–0.05 mm	Ensures even pressure distribution.ISO 1101
Surface Roughness	0.8–1.6 μm Ra	Affects die seating and corrosion resistance.ISO 1302
Material Grade	45# / 40Cr / Cr12MoV	Choose based on strength and wear requirements.GB/T 699, GB/T 3077
Max Operating Temperature	200–300 °C	Above this, hardness and strength degrade.
Max Operating Pressure	100–250 MPa	Exceeding may cause permanent deformation.
Weight	50–200 kg	Affects handling and press compatibility.
Mounting Hole Diameter	10–20 mm	Must match press bolster holes.ISO 273
Mounting Hole Pitch	80–200 mm	Determines bolt pattern compatibility.
Corrosion Resistance	Salt spray 24–72 h	Higher hours indicate better protection.ISO 9227

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

Alignment Bushings Part
Ensure precise alignment between upper and lower die holders

Material: Hardened steel
Die Mounting Surface Part
Precision-ground surface for die attachment

Material: Ground steel surface

Applied To / Applications

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

Die Set

View system integration details

Manufacturers of Die Holder/Adapter Plate

Manufacturer profiles associated with Die Holder/Adapter Plate.

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Frequently Asked Questions

What is the primary function of a die holder/adapter plate?

It securely holds the die and provides a mounting interface to the press, ensuring alignment and stability during stamping, punching, or forming operations.

What materials are commonly used for die holder/adapter plates?

Tool steel, alloy steel, and pre-hardened steel are typical, with grades such as 45#, 40Cr, or Cr12MoV depending on strength and wear requirements.

What are the key dimensional parameters to consider?

Plate thickness (20–60 mm), mounting hole diameter (10–20 mm), and mounting hole pitch (80–200 mm) are critical for press compatibility and rigidity.

How should I verify the quality of a die holder/adapter plate?

Check flatness and parallelism (0.02–0.05 mm per ISO 1101), hardness (28–32 HRC per GB/T 230.1), and surface roughness (0.8–1.6 μm Ra per ISO 1302). Always confirm with the manufacturer.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 1000 MPa (static), 500 MPa (dynamic)
other spec:	Maximum deflection: 0.1 mm/m under full load, Surface hardness: 45-55 HRC
temperature:	-20°C to 150°C (operating), up to 200°C (intermittent)

Product Specifications

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