Grove 22-Ton Rough Terrain Crane Overview

[MikePhua]

General Description
The Grove 22-ton crane, often referenced by models like the CM20, GCD25, AT422, or RT522, is a versatile rough terrain crane designed for lifting and material handling operations in construction, industrial, and utility applications. It balances compact design with powerful lifting capabilities, suitable for both confined and open yards, and supports multi-terrain mobility.
Boom and Lift Capacity

• Features a three to four-section telescopic boom ranging from approximately 30 to 78 feet (9.1 to 23.8 meters) in length, made of high strength steel for durability.
  
• Boom extensions like 17-ft swingaway or offsettable swingaway feature options that increase reach beyond 100 feet (up to 125 feet tip height), enhancing versatility.
  
• Maximum lifting capacity is about 22 to 25 US tons (20 to 23 metric tons), with rated lifting capacities varying by boom length and configuration.
  
• Rated lifting at different boom angles ranges from approximately 700 kg to over 2,200 kg (1,500 to 4,800 lbs), depending on extension and rigging.
  

Engine and Powertrain

• Powered by Cummins 6BTA 5.9L six-cylinder turbocharged diesel engines delivering around 185-190 horsepower with high torque for efficient lifting power.
  
• Equipped with four-wheel drive and four-wheel steer capabilities, allowing excellent maneuverability and stability on rough ground.
  
• Hydraulic load sensing piston pumps with proportional controls ensure smooth, responsive boom and hoist operations.
  
• Outriggers with various extension modes provide stable setups per job site requirements.
  

Operator Features

• Equipped with comfortable, ergonomically designed cabs with hydraulic joystick controls, tilt steering wheels, and operator comfort features such as suspension seats and optional enclosed cabs.
  
• Load Moment Indicators (LMI) and Anti-Two Block systems provide electronic monitoring to prevent overloads and collisions.
  
• Systems include audio-visual warnings and safety lockouts enhancing operational safety.
  
• Optional climate control, lighting packages, and convenience features improve usability in varied conditions.
  

Dimensions and Mobility

• Compact dimensions facilitate work in tight spaces with curb clearances under 4 feet and turning radii conducive to construction yard environments.
  
• Weighs approximately 45,000 pounds (about 20 tons), which includes counterweights and basic equipment.
  
• Tire sizes such as 17.5x25 support rough terrain mobility and load-carrying.
  

Maintenance and Safety

• Designed for ease of service with accessible maintenance points.
  
• Robust safety systems align with industry standards such as ASME B30.5.
  
• Features robust braking systems with planetary reductions and spring-applied brakes for reliable stopping power.
  

Glossary

• Telescopic Boom: Boom sections that extend and retract hydraulically for variable reach.
  
• Swingaway Extension: Removable boom extension increasing reach.
  
• Load Moment Indicator (LMI): Electronic system preventing operator from exceeding crane limits.
  
• Four-Wheel Steer: Steering all wheels for superior maneuverability.
  
• Outriggers: Extendable supports stabilizing the crane during lifts.
  

Conclusion
The Grove 22-ton rough terrain crane stands as a highly capable, adaptable lifting machine balancing power, reach, mobility, and operator safety. Its engine and hydraulic components equip it for demanding sites, while operator-centric features and safety systems support efficiency and accident prevention. Its compact footprint and boom versatility make it a preferred choice for contractors needing maneuverable yet powerful rough terrain cranes.