Centrifugal Weights: Mass Range 50-500g per weight

Component Specifications

Definition

Centrifugal weights are precision-engineered rotating masses mounted on a governor shaft that respond to rotational speed changes. As speed increases, centrifugal force causes these weights to move outward, mechanically adjusting fuel supply or throttle position to maintain constant speed. They are critical for stable operation in internal combustion engines, turbines, and rotating machinery.

Working Principle

Centrifugal weights operate on the principle of centrifugal force: F = mω²r, where mass (m) rotates at angular velocity (ω) at radius (r). As rotational speed increases, centrifugal force moves weights outward against spring tension, activating linkage mechanisms to reduce fuel/air supply. This creates a negative feedback loop that stabilizes rotational speed.

Materials

Typically forged steel (AISI 4140/4340), stainless steel (316/304), or high-density alloys (tungsten composites for compact designs). Surface treatments include hard chrome plating, nitriding, or ceramic coatings for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tolerance	±0.5g mass balance
Mass Range	50-500g per weight
Surface Finish	Ra 0.8μm max
Operating Speed	500-10,000 RPM
Temperature Range	-40°C to 200°C

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 10816

Parent Products

This component is used in the following industrial products

Governor (Mechanical)

A mechanical device within a fuel injection pump that regulates engine speed by controlling fuel delivery based on centrifugal force.

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Engineering Analysis

Risks & Mitigation

Imbalance causing vibration
Wear at pivot points
Fatigue failure at high cycles
Corrosion in harsh environments
Spring linkage failure

FMEA Triads

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to weight separation
Mitigation: Regular inspection for surface cracks, use of fatigue-resistant alloys, stress relief heat treatment

Trigger: Wear at pivot bushings
Failure: Increased clearance causing governor hysteresis
Mitigation: Hardened bearing surfaces, lubrication ports, wear-resistant coatings

Trigger: Corrosion in marine/chemical environments
Failure: Mass change affecting balance and response
Mitigation: Stainless steel construction, protective coatings, environmental sealing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5% mass variation within set, ±0.1mm dimensional tolerance

Test Method

Dynamic balancing per ISO 1940-1, centrifugal force testing at 125% rated speed, wear testing per ASTM G99

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

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Manufacturers of Centrifugal Weights

Manufacturer profiles associated with Centrifugal Weights.

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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 centrifugal weights?

To convert rotational speed changes into mechanical movement through centrifugal force, enabling automatic speed regulation in engines and rotating machinery.

How are centrifugal weights balanced?

Through dynamic balancing to ISO 1940 standards, ensuring mass distribution prevents vibration at operating speeds, typically requiring ±0.5g precision.

Can centrifugal weights be replaced individually?

No, they must be replaced as matched sets to maintain balance and performance, as even small mass variations cause governor instability.

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.

Centrifugal Weights