Central Body/Hub: Weight Capacity 500-5000 kg

Component Specifications

Definition

The central body/hub is the core structural component of a cross spider machine, designed to connect multiple arms or spokes in a radial configuration. It serves as the primary load-bearing element that distributes forces evenly while transmitting rotational torque from the drive system to the peripheral components. This precision-engineered part ensures alignment stability and operational synchronization across the entire machine assembly.

Working Principle

Operates as the central torque transmission point where rotational energy from the drive shaft is distributed radially to multiple output arms. The hub's geometry converts axial input into balanced radial forces while maintaining structural rigidity through its spoke attachment interfaces.

Materials

Typically manufactured from forged or cast steel alloys (e.g., AISI 4140, EN19) with heat treatment to achieve 35-45 HRC hardness. Alternative materials include ductile iron (65-45-12 grade) for cost-sensitive applications or aluminum alloys (7075-T6) for weight-critical implementations.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Max RPM	1500-3000
Bore Diameter	25-150 mm
Torque Rating	200-5000 Nm
Mounting Holes	4-12 bolt pattern
Flange Diameter	100-500 mm
Weight Capacity	500-5000 kg

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 6885, ISO 1940

Parent Products

This component is used in the following industrial products

Cross Spider

A central connecting component in a universal joint assembly that transmits torque between intersecting shafts.

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Engineering Analysis

Risks & Mitigation

Fatigue failure under cyclic loading
Bearing surface wear
Bolt loosening due to vibration
Misalignment causing uneven load distribution
Corrosion in harsh environments

FMEA Triads

Trigger: Insufficient lubrication
Failure: Increased friction and premature bearing wear
Mitigation: Implement automated lubrication systems and regular maintenance schedules

Trigger: Dynamic imbalance
Failure: Vibration leading to structural fatigue
Mitigation: Apply ISO 1940 balance standards and implement vibration monitoring

Trigger: Over-torque operation
Failure: Crack propagation in spoke attachment areas
Mitigation: Install torque limiters and overload protection systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm for bore diameter, ±0.1 mm for flange flatness, H7/h6 fit for shaft interfaces

Test Method

Ultrasonic testing for material integrity, coordinate measuring machine (CMM) for dimensional verification, dynamic balancing per ISO 1940 G2.5 standard

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 Central Body/Hub

Manufacturer profiles associated with Central Body/Hub.

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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

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Frequently Asked Questions

What is the primary function of a cross spider central hub?

The central hub serves as the main structural and torque transmission component that connects multiple arms in a radial configuration, ensuring balanced force distribution and synchronized operation.

How do I select the appropriate material for a cross spider hub?

Material selection depends on application requirements: forged steel for high-torque applications, ductile iron for cost efficiency, or aluminum alloys for weight reduction while maintaining adequate strength.

What maintenance is required for cross spider hubs?

Regular inspection for wear patterns, lubrication of bearing surfaces, torque verification of mounting bolts, and periodic alignment checks to prevent premature failure.

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.

Central Body/Hub