Mandrel Body: Maximum Load Capacity 5-200 kN

Component Specifications

Definition

The mandrel body is the primary cylindrical or tapered structural element in mandrel machines, designed to maintain precise dimensional stability and alignment during material forming processes such as tube bending, pipe expansion, or composite layup. It serves as the core support around which materials are shaped, ensuring consistent geometry and preventing deformation under operational loads.

Working Principle

The mandrel body operates by providing a rigid, precisely machined surface against which materials are formed. During operation, it remains stationary or rotates while external forces (hydraulic, mechanical, or pneumatic) shape materials around its contour. Its design minimizes deflection and maintains alignment through internal reinforcement structures and precise mounting interfaces.

Materials

Typically manufactured from high-strength alloy steels (AISI 4140, 4340), tool steels (D2, H13), or stainless steels (316, 17-4PH) with hardness ranging from 45-60 HRC. Advanced applications may use tungsten carbide inserts or ceramic coatings for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length Range	100-3000 mm
Concentricity	0.02 mm TIR
Diameter Range	10-500 mm
Surface Finish	Ra 0.4-1.6 μm
Maximum Load Capacity	5-200 kN
Operating Temperature	-20°C to 300°C
Straightness Tolerance	0.05 mm/m

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 2768, DIN 7168, ASME Y14.5

Parent Products

This component is used in the following industrial products

Mandrel

A cylindrical tool or shaft used in a downcoiler to form and support the coil of metal strip during the winding process.

View Product Details

Engineering Analysis

Risks & Mitigation

Dimensional inaccuracy due to wear
Structural failure under excessive load
Material galling or sticking
Misalignment causing forming defects
Fatigue cracking in high-cycle applications

FMEA Triads

Trigger: Insufficient material hardness
Failure: Premature surface wear leading to dimensional inaccuracy
Mitigation: Specify appropriate material grade and hardness; implement regular dimensional inspections

Trigger: Improper mounting or alignment
Failure: Forming defects in finished products
Mitigation: Use precision mounting fixtures; implement alignment verification procedures

Trigger: Excessive forming forces
Failure: Structural deformation or fracture
Mitigation: Calculate and monitor operational loads; implement force limiting controls

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 2768-m, dimensional tolerances ±0.05 mm for critical surfaces

Test Method

Coordinate measuring machine (CMM) verification, surface roughness testing, non-destructive testing (MPI/UT) for critical applications

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 Mandrel Body

Manufacturer profiles associated with Mandrel Body.

Sourcing Mandrel Body from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

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

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Upper Tool (Punch)

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 is the primary function of a mandrel body?

The mandrel body provides the central structural support and precise forming surface around which materials are shaped in mandrel-based forming operations, ensuring dimensional accuracy and preventing material collapse or wrinkling.

How do I select the appropriate mandrel body material?

Material selection depends on application requirements: alloy steels for general-purpose forming, tool steels for high-wear applications, stainless steels for corrosive environments, and tungsten carbide for extreme wear resistance in high-volume production.

What maintenance does a mandrel body require?

Regular inspection for surface wear, dimensional verification, cleaning to prevent material buildup, and periodic lubrication of mounting interfaces. Damaged surfaces should be re-machined or replaced to maintain forming accuracy.

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.

Mandrel Body