Welcome to Associated Wire Rope & Rigging .
Construction / Snatch / Misc Blocks
Definition of Block Number
A specialized reference for understanding Ropeblock’s engineering codes. It explains the nomenclature for all model prefixes—HB (Single sheave), WB (Samson), HLS/VLS/FLS (Directional), VB/VBK (Snatch), HCLW (High Capacity Low Weight), and CB (Construction)—while detailing how tread diameters, wire rope sizes, and reeving configurations are structured for complete traceability.
Understanding the Blueprint: The Anatomy of a Ropeblock Crane Block Product Number
A Ropeblock product number is more than just a label; it is a condensed technical specification. Each alphanumeric segment provides critical data regarding the block’s design, capacity, and physical attributes, allowing for precise identification and selection in mobile, crawler, and land-based crane applications
Decoding the Product Number (Example: FRB 528.26.5.100.E)
- Model Description: Identifies the primary block type, such as FRB for Fast Reeve Crane Blocks or SRB for Standard Reeve Crane Blocks.
- Sheave Tread Diameter: Indicates the diameter of the sheave tread measured in millimeters.
- Wire Rope Size: Specifies the compatible wire rope diameter in millimeters.
- Number of Sheaves: Details the total count of sheaves integrated into the block.
- Working Load Limit (WLL): Defined in Metric tons; to calculate US tons, multiply this value by 110%.
- Additional Product Description: Denotes the specific attachment type, such as E (Single Hook), D (Ramshorn Hook), DB (Ramshorn Hook form B), S (Shackle), or O (Oblong Eye).
Standard High-Performance Features
- Safety Engineering: Designed with a 4:1 design factor and equipped with a safety latch including a locking pin.
- Durable Components: Features forged high-tensile steel hooks, cast sheaves with graphite-lubricated grooves, and double-sealed maintenance-free roller bearings.
- Extreme Adaptability: Operational in temperatures ranging from -40°C to +80°C (-40°F to +176°F).
- Efficiency for Operators: Includes fast reeve guides for rapid reeving and a 4 or 8-point hook locking device for enhanced control.
- Industrial Finish: Standardized with a C3M finish in signal yellow with black safety striping.