INDUSTRY COMPONENT

Center plate

A precision-machined plate that serves as the central mounting and alignment interface between the bolster and upper press components in industrial machinery.

Component Specifications

Definition
The center plate is a critical structural component in press machinery, specifically designed to provide a stable, flat mounting surface that ensures proper alignment between the bolster (lower stationary bed) and the moving upper components such as the slide or ram. It distributes operational forces evenly, maintains parallelism during press cycles, and serves as a reference plane for tooling installation and adjustment.
Working Principle
The center plate operates on principles of force distribution and geometric stability. During press operation, it transmits compressive and shear forces from the upper moving components to the stationary bolster while maintaining precise alignment through its machined flatness and mounting features. It acts as a kinematic coupling interface, ensuring repeatable positioning and minimizing deflection under load.
Materials
Typically manufactured from high-strength alloy steel (e.g., AISI 4140, 4340) or ductile cast iron (e.g., Grade 60-40-18). Heat-treated to achieve hardness of 28-32 HRC for steel or 200-250 HB for cast iron. Surface finish: Ground to 0.8-1.6 μm Ra for mounting surfaces.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Thickness50-150 mm
Weight CapacityUp to 500 kN/m²
Surface Hardness28-32 HRC (steel)
Flatness Tolerance0.05 mm/m
Mounting Hole PatternGrid or circular array
Parallelism Tolerance0.08 mm total

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 8521, DIN 55189

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Misalignment leading to uneven wear
  • Fatigue cracking under cyclic loading
  • Surface damage from improper tooling installation
  • Corrosion in humid environments
FMEA Triads
Trigger: Improper installation or uneven mounting bolt torque
Failure: Warpage and loss of flatness
Mitigation: Use calibrated torque wrench with crisscross tightening pattern; verify flatness after installation
Trigger: Cyclic loading beyond design limits
Failure: Fatigue cracks initiating at stress concentration points
Mitigation: Implement load monitoring; conduct periodic NDT inspections; avoid overloading
Trigger: Abrasive particle contamination between mating surfaces
Failure: Surface scoring and accelerated wear
Mitigation: Thorough cleaning before assembly; use protective covers during maintenance

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Flatness: ±0.05 mm/m, Parallelism: ±0.08 mm total, Surface finish: 0.8-1.6 μm Ra
Test Method
Laser interferometry for flatness, Coordinate measuring machine (CMM) for dimensional verification, Ultrasonic testing for material integrity

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 Center plate

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jiangsu Tedrail Industrial Co., Ltd.
Jiangsu, CN
Also makes: Slack adjuster, Control Valve, Brake System and 4 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Center Plate”
View source page ↗ tedrail.com · checked 2026-09-13
Maanshan Kingrail Technology Co.,ltd
Anhui, CN
Also makes: Track Rail, Brake beam, Slack adjuster and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Center Plate”
View source page ↗ kingrailparts.com · checked 2026-09-14
Shaanxi Haiduo Railway Technology Development Co.,Ltd.
Shaanxi, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “>Center plate”
View source page ↗ haiduorailway.com · checked 2026-09-13

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary function of a center plate in press machinery?

The center plate provides a precise mounting and alignment interface between the stationary bolster and moving upper components, ensuring proper force distribution and maintaining geometric accuracy during press operations.

How often should center plate alignment be checked?

Alignment should be verified during annual preventive maintenance or after any significant impact event. Regular visual inspections for surface damage should be conducted monthly.

Can center plates be re-machined if damaged?

Yes, within limits. Up to 2 mm of material can typically be removed from mounting surfaces through regrinding, provided flatness and parallelism tolerances are maintained.

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.

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