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Crane Blocks & Overhaul Ball

Round Overhaul Balls

This technical document introduces the specialized Round Overhaul Ball series (5 to 20 UStons). It describes the aerodynamic advantages of the cast body design and provides detailed specifications for the OHB-B series, including forged alloy eye hooks and weight calculations based on boom length and efficiency loss in high-speed lifting applications.

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Engineered for Efficiency & Precision Lifting

The Round Overhaul Ball is designed to optimize mobile and crawler crane performance by balancing weight based on average boom lengths and efficiency loss. Its low-friction, easy-access hook swivel makes it a versatile and reliable anchor point for a wide range of industrial crane applications.

Maximum Safety Features
  • Design Factor of 4:1 to ensure structural reliability.
  • Minimum Ultimate Strength is rated at 4 X WLL.
  • High-Quality Thrust Bearings and forged alloy eye hooks compliant with EN 1677-2.
  • Extreme Temperature Range certified for safe operation from -40°C to +80°C.
Industrial Flexibility
  • WLL Range: Available in standard capacities from 22 UStons up to 150 UStons.
  • Adjustable Overhaul Weight: Blocks can be fitted with removable or interchangeable cheek weights to match specific project needs.
  • Versatile Wire Sizing: Sheave grooves are engineered to accommodate wire rope diameters ranging from 3/8″ to 1-1/2″.
  • Custom Engineering: Inquiries for custom versions are welcome to ensure a perfect fit for unique industrial applications.

Round Overhaul Ball Technical Specifications

Below is a partial specification table. Please contact our technical team for full dimensions (B, O, OTA, TL, T, OZ) and WLL verification based on your specific application and certification requirements.

⚠ Safety Warning: Always adhere to the recommended Working Load Limit (WLL) and ensure the equipment is inspected regularly for wear or damage. Refer to the comprehensive safety documentation on page 136 for full installation and maintenance procedures.