Hub / Center Plate: Bore Size 25-100 mm, Diameter 150-500 mm

Component Specifications

Definition

The hub or center plate is a critical rotating component in impeller/roller cell machinery that serves as the central structural element connecting multiple impeller blades or rollers to the drive shaft. It provides mechanical stability, ensures proper blade alignment, and transmits torque from the drive system to the working elements while maintaining rotational balance under operational loads.

Working Principle

The hub functions as a rigid central mounting platform that converts rotational energy from the drive shaft into centrifugal force through attached blades/rollers. It maintains precise angular positioning of multiple working elements while distributing mechanical stresses evenly across the assembly during high-speed rotation.

Materials

Typically forged or machined from high-strength alloys: AISI 4140 steel, 17-4PH stainless steel, or aluminum 7075-T6 for lightweight applications. Surface treatments include hard anodizing (aluminum) or nitriding (steel) for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	2-50 kg
Max RPM	3000-10000
Diameter	150-500 mm
Bore Size	25-100 mm
Balance Grade	G2.5 per ISO 1940
Mounting Holes	6-24 bolt pattern
Runout Tolerance	≤0.05 mm

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 1940-1, DIN 45665, ISO 21940-11

Parent Products

This component is used in the following industrial products

Impeller/Roller Cell

A key rotating component within a fuel pump that creates pressure and moves fuel.

View Product Details

Engineering Analysis

Risks & Mitigation

Fatigue cracking at stress concentration points
Imbalance causing vibration damage
Bore wear leading to shaft misalignment
Corrosion in harsh environments

FMEA Triads

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to catastrophic fracture
Mitigation: Implement regular non-destructive testing (ultrasonic/magnetic particle), use fatigue-resistant alloys, maintain proper lubrication

Trigger: Improper installation torque
Failure: Bolt loosening and imbalance
Mitigation: Use calibrated torque wrenches, follow manufacturer's torque sequence, apply thread-locking compounds

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.025 mm concentricity, ±0.1° angular positioning

Test Method

Coordinate measuring machine (CMM) verification, dynamic balancing per ISO 1940, ultrasonic thickness testing

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 Hub / Center Plate

Manufacturer profiles associated with Hub / Center Plate.

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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 hub/center plate in impeller machinery?

It serves as the central mounting structure that connects impeller blades to the drive shaft while maintaining rotational balance and precise blade positioning.

How often should hub assemblies be inspected for wear?

Regular visual inspections every 500 operating hours, with dimensional checks and balance verification during scheduled maintenance every 2000-3000 hours.

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.

Hub / Center Plate