INDUSTRY COMPONENT

Counterweight

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

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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
  • Density 7,200-7,800 kg/m³
  • Weight Range 2,000-20,000 kg
  • Mounting Type Bolted connection with shear pins
  • Safety Factor Minimum 4:1
  • Surface Finish Epoxy-coated or galvanized
  • Temperature Range -40°C to +60°C
Standards
ISO 4301, ISO 4309, DIN 15018, ASME B30.5

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Counterweight.

crane counterweight rough terrain crane parts lifting equipment counterbalance industrial crane components stability systems heavy equipment counterweights Counterweight Counterweight in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rough Terrain Crane

A mobile crane specifically designed for off-road operation on rough, uneven terrain with enhanced stability and mobility features.

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Luffing Jib Crane

A type of tower crane with a jib that can be raised and lowered to change its working radius.

View Product Details

Tracked Loader

A heavy-duty construction machine with continuous tracks for mobility and a front-mounted bucket for material handling.

View Product Details

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

Interchangeable Parts

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

Buyer Feedback

★★★★☆ 4.5 / 5.0 (35 reviews)

"The Counterweight we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 55+ suppliers for Counterweight on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Counterweight is very thorough, especially regarding technical reliability."

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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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Counterbalance Spring (optional) Counterweight Frame