KOBELCO CK2000-II Crawler Crane Lower Rollers

KOBELCO CK2000-II Crawler Crane is a high-performance, heavy-duty lifting equipment, specifically designed for complex working conditions. Its advantages are below:

• Super Lifting Capacity
  Maximum Lifting Weight: 200 tons (main boom condition), extendable to 280 tons (counterweight enhancement mode)
  Main Boom Length: Standard configuration 30-120 meters, maximum combined length 180 meters (main boom + fly jib), suitable for ultra-high-rise lifting requirements
  Lifting Height: Up to 195 meters, applicable for high-altitude operations such as wind power, bridges, and super high-rise buildings.
• Flexible Adaptation to Complex Working Conditions
  Rapid Transition: Main arm assembly/disassembly time is less than 6 hours, track width adjustable (1.5-2.2 meters), suitable for narrow sites
  Terrain Adaptability: Extra-wide tracks (ground pressure 0.6 kg/cm²) compatible with marshes and sandy terrain, climbing ability 30%.
  Multifunctional Expansion: Optional attachments such as grabs, pile drivers, and aerial work platforms, expanding use to demolition, foundation piling, maintenance, and other scenarios.

KOBELCO CK2000-II Lower Rollers Assy Details:

Material	42CrMo
Technology	Forging
Heat Treatment	Advanced Quenching and Tempering (Hardness 270HB), then Surface Hardening and Deep Hardening (Hardness 56HRC)
Brand Name	EG
Warranty	2500 Working Hours / One Year

Forging crawler crane track rollers using 42CrMo material has the following significant advantages, which enable it to perform exceptionally well under heavy loads, high impact, and complex working conditions:

• Material Performance Advantages
  High Strength and Toughness: 42CrMo is a low-alloy high-strength steel. After quenching and tempering, its tensile strength can reach 900-1100 MPa, with a yield strength ≥ 650 MPa, while maintaining good toughness (impact energy ≥ 63 J), capable of withstanding heavy loads and frequent impacts.
  Excellent Wear Resistance: Through surface hardening, the surface hardness can reach HRC 50-55, while the core maintains a toughness of HRC 30-35, forming a “hard outside, tough inside” structure, significantly enhancing wear resistance performance.
• Advantages of Forging Technology
  Dense Structure and High Reliability: The forging process refines grains under high temperature and high pressure, eliminates casting defects (such as porosity and shrinkage), increases material density by 5%-8%, and extends fatigue life by 40%-60% compared to casting parts.
  Streamlined Fibre Structure: Forging aligns the metal flow along the profile of the lower roller, enhancing shear and impact resistance. When subjected to 1.5 times the overload, the deformation is 30% less than that of casting parts.

KOBELCO CK2000-II Lower Rollers Production Process:

Our Crane Track Rollers Advantages:

Items	Our Track Roller Parts	Other Common Track Roller
Roller Body Material	40Mn2 / 42CrMo Round Steel	50Mn Square Steel
Shaft Material	40Cr Alloy Steel	#45 Carbon Steel
Bushing Material	ZGCuZn25Al6Fe6Mn3	The metal sleeve plated thin copper layer
Heat Treatment	Advanced Quenching and Tempering, then Surface Hardness and Deep Hardening	just Surface Hardness
Testing	Material Element Analyser, Metallographic Examination, Impact Testing, Cutting Testing, Hardening Testing, UT, MT…	Hardness Testing…

Company Certification:

FAQ:

• Can you produce according to drawings or samples?

Yes, we often produce crane undercarriage parts as client’s drawing or technology requirements.

• What is your parts warranty?

Generally, for the crawler crane on standard working conditions, the parts warranty is one year / 2500 hours

• How long have you been in this industry?

We have 20+ technical team industry experience

• Can you provide real factory photos?

Yes, we can. Also, welcome to visit our factory.

YANTAI EVERGROWING is a Crawler Crane Undercarriage Parts Specialist

If interested, please freely contact us

Mail: info@maxcrawlercrane.com

Whatsapp:+86 17853553781