Crosby McKissick M-491 / G-491 Tower/Derrick Hoist Blocks

Product details

• New design provides the dependability of standard McKissick® Snatch Blocks, along with features that make it perfect for the challenging needs of Tugger Hoist and Tower Erection applications.
• Fully recessed sideplate design eliminates gap between sheave rim and sideplate, providing failsafe capture of the sheave in the case of center pin overloading.
• Sealed tapered roller bearings extend the life of the center pin and bearings, and allows for faster line speeds than recommended with standard snatch blocks.
• Holes through side plates are available for secondary block securement device.
• Suitable for hoisting personnel, contingent upon all employees, including the winch operator, being trained to follow applicable Federal, local and industry standards.
  • Tugger/Derrick applications: API RP54
  • Tower applications: OSHA directive CPL 2-1.36
• All sizes are furnished with dual rated wireline sheaves.
• Forged steel swivels, tees, yokes and shackles are Quenched & Tempered.
• Sheave lubrication through center pin for easy maintenance.
• All blocks 14" and larger are furnished with McKissick® Roll Forged sheaves with flame hardened grooves.
• Shackle fitting swivels for easy positioning.
• Manufactured by an API Q1 Certified facility.