INDUSTRY COMPONENT

Mandrel Assembly

Mandrel assembly for industrial tube bending machines prevents tube collapse during bending operations.

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Component Specifications

Definition
A mandrel assembly is a critical component in industrial tube bending machines, consisting of a rigid mandrel rod, support balls or segments, and mounting hardware. It is inserted into the tube interior during bending to maintain cross-sectional shape, prevent wrinkling, ovalization, or collapse, and ensure precise bend geometry with minimal wall thinning.
Working Principle
The mandrel assembly works by providing internal support to the tube wall during the bending process. As the bending die applies force, the mandrel's rigid structure counteracts compressive forces on the inner radius and tensile forces on the outer radius, distributing stress evenly to maintain tube integrity and dimensional accuracy.
Materials
Typically made from hardened tool steel (e.g., AISI D2, H13), stainless steel, or carbide for wear resistance. Support balls may use bronze or polymer coatings to reduce friction.
Technical Parameters
  • Length Custom to tube length
  • Mandrel Diameter 0.5-200 mm
  • Surface Hardness 58-62 HRC
  • Ball/Segment Count 3-10
  • Operating Temperature -20°C to 200°C
Standards
ISO 12163, DIN 2448

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Mandrel Assembly.

mandrel assembly tube bending mandrel bending machine components industrial tube bending mandrel support balls tube collapse prevention Mandrel Assembly in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Industrial Tube Bending Machine

CNC-controlled machine for precision bending of metal tubes and pipes

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Engineering Analysis

Risks & Mitigation
  • Mandrel wear leading to tube defects
  • Improper alignment causing scratches or jamming
  • Material incompatibility with tube coating
FMEA Triads
Trigger: Abrasive tube materials or lack of lubrication
Failure: Excessive mandrel wear, reduced support, tube collapse
Mitigation: Use hardened materials, apply lubricants, implement regular inspection schedules
Trigger: Misalignment during setup
Failure: Tube scratching, uneven bending, machine damage
Mitigation: Follow calibration procedures, use alignment tools, train operators

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm on diameter, ±0.1 mm on straightness
Test Method
Dimensional inspection with micrometers, bend testing with sample tubes, wear analysis via surface roughness measurement

Buyer Feedback

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Frequently Asked Questions

What is the purpose of a mandrel assembly in tube bending?

It prevents tube deformation (collapse, wrinkling) during bending by providing internal support, ensuring precise bend geometry and wall integrity.

How do I select the right mandrel assembly for my application?

Consider tube material, diameter, wall thickness, bend radius, and required precision. Match mandrel diameter closely to tube ID, and choose ball count based on bend severity.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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