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

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.

• A wide variety of configurations:
  – 4, 8, 12, 15, 25 or 30 metric ton capacity
  – 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 7/8″, 1″ and 1-1/4″ wire line sizes
  – Painted or Galvanized finish
• 8″ and 10″ blocks furnished with dual rated wireline sheaves.
• Forged steel swivels, tees, yokes and shackles are Quenched & Tempered.
• Sheave lubrication through center pin for easy maintenance.
• Design factor of 4 to 1.
• All blocks 14″ and larger are furnished with McKissick^® Roll Forged^TM sheaves with flame hardened grooves.
• Recessed sideplate design reduces the gap between the sheave rim and the sideplate, allowing the sheave assembly to be captured in the block if loss of center pin occurs.
• 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.
• Shackle fitting swivels for easy positioning.
• Suitable for hoisting personnel, contingent upon all employees, including the winch operator, being trained to follow any applicable Federal, local and industry standards.
  – Tugger / Derrick applications: API RP54
  – Tower applications: OSHA directive CPL 2-1.36
• Holes through side plates are available for secondary block securement device.
• Manufactured by an API Q1 Certified facility.
• Type Approval and certification in accordance with ABS 2006 Steel Vessel Rules 1-1-17.7, and ABS Guide for Certification of Cranes.
• All sizes are RFID EQUIPPED.