INDUSTRY COMPONENT

Bearing Surface

Precision-machined surface in extrusion dies that supports and guides moving parts under high pressure and temperature.

Component Specifications

Definition
The bearing surface in extrusion dies is a critical precision-machined interface that provides structural support, alignment, and guidance for moving components during plastic, metal, or composite extrusion processes. It withstands extreme pressures (typically 10-100 MPa), high temperatures (up to 400°C for plastics, higher for metals), and continuous friction while maintaining dimensional stability and surface integrity throughout production cycles.
Working Principle
Operates on tribological principles to minimize friction and wear between moving die components while maintaining precise alignment under load. The surface geometry and finish create controlled clearance zones that manage material flow, prevent leakage, and ensure consistent product dimensions through hydrodynamic or boundary lubrication mechanisms.
Materials
Tool steels (H13, D2, M2), carbide composites (WC-Co), ceramic coatings (TiN, TiAlN, DLC), or specialized alloys (Inconel, Stellite) with hardness 45-65 HRC, surface roughness Ra 0.1-0.8 μm, and thermal stability up to 600°C.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Hardness45-65 HRC
Surface FinishRa 0.1-0.8 μm
Pressure Rating10-100 MPa
Wear Resistance≤0.01 mm/1000 cycles
Temperature Range-50 to 600°C
Flatness Tolerance0.001-0.01 mm/mm
Corrosion ResistanceASTM B117 >500 hours

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 286-2, DIN 7154, ASTM E177, JIS B 0401

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Surface galling under high pressure
  • Thermal deformation exceeding tolerance
  • Abrasive wear from contaminated materials
  • Corrosion in chemical environments
  • Fatigue cracking from cyclic loading
FMEA Triads
Trigger: Insufficient surface hardness or improper material selection
Failure: Accelerated wear leading to dimensional inaccuracy in extruded products
Mitigation: Specify materials with minimum 50 HRC hardness, apply wear-resistant coatings (TiN, DLC), implement regular hardness testing
Trigger: Thermal expansion mismatch between bearing surface and supporting structure
Failure: Binding or seizure during operation, causing production stoppages
Mitigation: Design with matched thermal expansion coefficients, incorporate thermal barriers, implement temperature monitoring systems
Trigger: Contaminant ingress from feedstock or environment
Failure: Abrasive wear and surface scoring, reducing component lifespan
Mitigation: Install filtration systems, maintain cleanroom conditions where possible, implement regular cleaning protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Geometric tolerances per ISO 2768-mK, surface finish per ISO 1302, dimensional stability within ±0.005 mm under operating conditions
Test Method
Coordinate measuring machines (CMM) for geometry, surface profilometers for roughness, Rockwell hardness testers, thermal cycling tests per ASTM E831

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 Bearing Surface

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

Hanchine
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

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

Related Components

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Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.
Seal Groove
Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What causes premature wear on extrusion die bearing surfaces?

Premature wear typically results from abrasive contaminants in feedstock, inadequate lubrication, misalignment exceeding 0.02 mm, thermal cycling beyond material limits, or surface hardness below 45 HRC for the application.

How often should bearing surfaces be inspected in production?

Inspect every 500-1000 operating hours or during scheduled die maintenance. Critical applications require dimensional checks every 200 hours using precision gauges and surface profilometers.

Can damaged bearing surfaces be repaired?

Minor damage (<0.05 mm depth) can be repaired through precision grinding and re-coating. Severe damage requires complete surface re-machining or component replacement to maintain extrusion tolerances.

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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