Ròng rọc (5-300 tấn)- Crosby-USA-Model 380.

380 Series Hook Blocks

• Sheaves lubrication through center pin – separate
• Capacity: 5 to 300 tons - Larger Models Available.
• Sheave Sizes: 10” to 30”.
• Wire Line Sizes: 7/16” to 1-3/8”.
• Manufactured by an ISO 9001 and API Q1 certified facility.
• All single point shank hooks are genuine Crosby®, forged alloy steel, Quenched and Tempered, and have the patented QUIC-CHECK® markings (Duplex hooks are available on all sizes).
• All 380 Blocks are furnished standard with Roller Bearings.

• Reeving Guide Standard – All Models.
• Blocks thru 25 tons use 319N style hooks with S-4320 latches.

• Sheave fully protected by side plates.
• Dual action hook (swings and rotates).
• Repair parts available through world wide distribution network.
• Design Factor of 4 to 1 (unless otherwise noted).
• All 380 blocks, 16” and larger, are furnished with McKissick® Roll-Forged™ sheaves with flame hardened grooves.
• “Look for the Orange Hook . . . the mark of genuine McKissick® quality”.

OPTIONS AVAILABLE

• Bronze Bushed Sheaves
• Duplex Hooks
• Swivel Tee and Shackle Assemblies
• Sheave Shrouds
• Anti Rotation Hook - Locking Device
• Plate Steel Cheek Weights
• Third party testing with Certification available upon request.

Dead End Chart

(Double, Triple, & Quad Sheave Blocks*)

* To find Dead End Dimensions for Single Sheave blocks, refer to table on pages 296.

+ US-422T Terminator Style.