INDUSTRY COMPONENT

Counterweight

Counterweight for rough terrain cranes providing stability during lifting operations by balancing load moments.

Component Specifications

Definition
A counterweight is a critical structural component in rough terrain cranes designed to offset the overturning moment created by lifted loads. It consists of dense material blocks mounted on the rear of the crane's rotating superstructure, providing necessary mass to maintain stability within the crane's rated capacity chart. The system includes mounting brackets, connection hardware, and sometimes adjustable configurations for different working conditions.
Working Principle
Operates on the principle of moment balance where the counterweight creates a stabilizing moment opposite to the load moment. When the crane lifts a load, it creates an overturning force around the tipping axis. The counterweight's mass positioned at the rear generates a restoring moment, keeping the crane within its stability envelope. The effectiveness depends on the counterweight's mass, distance from the pivot point, and the crane's configuration.
Materials
High-density cast iron (ASTM A48 Class 35B) or reinforced concrete with steel reinforcement (ASTM A615 Grade 60). Steel mounting brackets (ASTM A36) with corrosion-resistant coating (ISO 12944 C5-M).
Technical Parameters
ParameterTypical rangeNotes & selection driver
Density7,200-7,800 kg/m³
Weight Range2,000-20,000 kg
Mounting TypeBolted connection with shear pins
Safety FactorMinimum 4:1
Surface FinishEpoxy-coated or galvanized
Temperature Range-40°C to +60°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 4301, ISO 4309, DIN 15018, ASME B30.5

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Structural failure under dynamic loads
  • Improper installation causing imbalance
  • Corrosion in harsh environments
  • Inadequate maintenance leading to connection failure
FMEA Triads
Trigger: Fatigue cracking in mounting brackets
Failure: Counterweight detachment during operation
Mitigation: Regular ultrasonic testing of welds, replacement of brackets per manufacturer schedule, torque verification of connection bolts
Trigger: Corrosion in coastal environments
Failure: Reduced structural integrity and weight loss
Mitigation: Application of marine-grade coatings, regular inspection for corrosion, cathodic protection systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±2% of specified weight, ±3mm dimensional tolerance on mounting interfaces
Test Method
Load testing per ISO 4309, non-destructive testing of welds, weight verification using calibrated scales

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 Counterweight

6 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Botou Baichang Machinery Measuring Tools Co., Ltd.
Tianjin, CN
Also makes: Inspection Platform
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “> Counterweight iron series”
View source page ↗ 3dweldingplatform.com · checked 2026-08-29
Huachang Hydraulic CO., Ltd.
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Counterweight Cylinder”
View source page ↗ hopecylinder.com · checked 2026-09-16
Luoyang Hypersolid Metal Tech Co., Ltd
Luoyang, Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Tungsten counterweights”
View source page ↗ hypersolidmetal.com · checked 2026-09-08
Rheniumet Ltd
Changsha, Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Counterweight solutions”
View source page ↗ rheniumet.com · checked 2026-09-08
Simis-manufacturer
Taiyuan, Shanxi, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Cast Iron Counterweight”
View source page ↗ simis-manufacturer.com · checked 2026-09-04
SINOLIFT EQUIPMENT CO., LTD.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Counterweight Stacker”
View source page ↗ sinolift.com · checked 2026-08-28

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

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Frequently Asked Questions

How is counterweight weight determined for rough terrain cranes?

Counterweight weight is calculated based on the crane's maximum lifting capacity, boom length, working radius, and stability requirements per ISO 4301 standards. Manufacturers use load moment indicators and stability calculations to determine optimal counterweight mass.

Can counterweights be adjusted during operation?

Most rough terrain crane counterweights are fixed installations, but some models feature hydraulic or mechanical adjustment systems that allow operators to modify counterweight position or add/remove sections for different working conditions.

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.

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