Balancing Weights: Weight Range 0.1g to 500g, Tolerance ±0.05g

Component Specifications

Definition

Balancing weights are specialized components designed to counteract mass imbalances in rotating assemblies such as blade holders and rotors. They are strategically placed to adjust the center of mass, minimizing centrifugal forces that cause vibration, noise, and premature wear. This is critical in high-speed applications like turbines, compressors, and fans to maintain operational stability, reduce mechanical stress, and extend equipment lifespan.

Working Principle

Works by adding or adjusting mass at specific radial positions on the rotating component to shift the center of mass toward the axis of rotation. This reduces the unbalance force (F = m × r × ω²), where m is mass, r is radius, and ω is angular velocity, thereby lowering vibration amplitudes to acceptable levels as per balancing standards.

Materials

Typically made from high-density materials like lead, steel alloys (e.g., AISI 1018), tungsten, or brass. Coatings such as zinc plating or powder coating may be applied for corrosion resistance. Material selection depends on required density, environmental conditions, and compatibility with the rotor material.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	7.8-11.3 g/cm³
Tolerance	±0.05g
Weight Range	0.1g to 500g
Mounting Type	Adhesive, clip-on, or bolted
Temperature Range	-40°C to 150°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, ISO 21940-11, DIN ISO 1940, API 617

Parent Products

This component is used in the following industrial products

Blade Holder / Rotor

A rotating assembly that securely holds and positions cutting blades within a pellet cutter.

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Impeller/Fan

The impeller/fan is a rotating component used in air blower and damper systems to generate airflow or pressure.

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Engineering Analysis

Risks & Mitigation

Incorrect weight placement causing increased imbalance
Material fatigue or detachment at high speeds
Corrosion leading to mass change over time

FMEA Triads

Trigger: Improper weight calculation or installation
Failure: Excessive vibration and rotor instability
Mitigation: Use precision balancing equipment and follow ISO 1940-1 guidelines for weight placement

Trigger: Material degradation due to environmental exposure
Failure: Weight loss or detachment during operation
Mitigation: Select corrosion-resistant materials and apply protective coatings; implement regular inspection schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Balance quality grade G2.5 per ISO 1940-1 for general industrial rotors

Test Method

Dynamic balancing using hard-bearing or soft-bearing balancing machines with vibration analysis per ISO 21940-11

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 Balancing Weights

Manufacturer profiles associated with Balancing Weights.

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Frequently Asked Questions

How do balancing weights improve machine performance?

They correct mass imbalances, reducing vibration and noise, which lowers wear on bearings and seals, improves energy efficiency, and prevents catastrophic failures in rotating machinery.

What standards apply to balancing weights?

Key standards include ISO 1940-1 for balance quality grades and ISO 21940-11 for balancing procedures, ensuring compliance with safety and performance requirements in industries like manufacturing and energy.

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.

Balancing Weights