Crosby Mckissick Crane Blocks

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 most sizes). All 380 Blocks are furnished standard with Roller Bearings.
Options: Bronze bushed sheaves, duplex hooks, swivel tee and shackle assemblies, sheave shrouds, anti rotation - locking device (75 tons & larger), plate steel cheek weights, third party testing with certification available upon request.
  

There is a wide range of the product available, from a capacity of 5 to 80 tons. Sheave sizes from 10" to 20" and wire line sizes from 7/16 to 1-1/4". 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 most sizes).

Available options: Duplex hooks (75 tons & larger), swivel tee and shackle assemblies, sheave shrouds, anti rotation - locking device (75 tons & larger), plate steel cheek weights, third party testing with certification available upon request. Larger sizes available on request.

All single point shank hooks are genuine Crosby®, forged alloy steel, quenched and tempered, and have the patented QUIC-CHECK® markings. Can be used with a magnet and a drop ball for scrapyard work. Durable - allows longer continuous duty cycle. Single sheave design dual action hook (Swings and rotates). Utilizes McKissick® Roll-Forged™ sheaves with flame hardened grooves. Furnished standard with bronze bushed sheaves. Optional tapered roller bearings.

There is a wide range of this product available, with capacities from 5 to 100 tons and larger models available upon request. Available with sheave sizes from 6" to 24" O.D. and wire line sizes from 3/8" to 1-1/4". All units are equipped with genuine Crosby® forged steel, quenched and tempered shackles that contain the patented QUIC-CHECK® markings. Design Factor 4 to 1. All 680 Series Blocks are furnished standard with bronze bushings. All 680 blocks 16" and larger, are furnished with McKissick® Roll Forged™ sheaves with flame hardened grooves. Sheaves are lubricated through centre pin, with a separate lube channel to each sheave.

Removable housing allows block to be reeved without complete disassembly, on Model 752 only. Sheave pitch diameter is a minimum of 16 times rope diameter on standard sizes. All single point shank hooks are genuine Crosby, forged alloy steel, quenched and tempered, contain the patented QUIC-CHECK markings and come with a world class latch that integrates with hook tip. Sheave bearings are maintenance free and sealed for life (10,000 hrs.). Ability to attach optional anti two-block device (Model 752 only). Available with shackle as lower connection point. Ultimate load it 5:1 times the Working Load Limit.