BALL OVHL SWVL TOP 4TON SWVL UTIL

Description du produit

The McKissick UB-550E is a 4 Ton capacity utility overhaul ball designed for crane and rigging applications where a top swivel attachment is required at lighter capacity ratings. Overhaul balls provide the essential dead weight needed below a crane hook block to ensure the block travels downward reliably under its own weight when the load line is slackened. The swivel attachment on the UB-550E allows free rotation of the load line connection, reducing line twist and improving operational efficiency during repeated lifting cycles.

The UB-550E utility series is built for crane service across construction, industrial, and oilfield environments. The swivel top attachment provides a secure and rotating connection point to the crane hook or block, while the ball body supplies the necessary dead weight to overhaul the block. This design is particularly valuable in applications involving longer line lengths or frequent load cycling where line twist accumulation would otherwise become a concern, even at lighter capacity ratings.

McKissick is a well-established manufacturer of crane and rigging hardware with a long history of field-proven performance in heavy industry. The UB-550E series spans multiple capacity ratings, with this 4 Ton model representing the lighter end of the lineup while maintaining the same reliable construction standards as the broader UB-550E series. Always confirm that the overhaul ball's rated capacity is appropriate for the crane and rigging configuration in use, and inspect the swivel and all attachment hardware for wear, deformation, or damage prior to each lift.

Material: Steel construction

Uses: Overhauling crane hook blocks during unloaded descents Adding dead weight below crane blocks to ensure smooth line travel Light-capacity crane and rigging service with swivel line management Construction, industrial, and oilfield lifting operations

Key Features: 4 Ton rated capacity Utility series overhaul ball Top swivel attachment for free rotation and reduced line twist McKissick UB-550E series Designed for repeated lifting cycle service

Note: Confirm rated capacity and compatibility with the crane and rigging system before use. Inspect swivel attachment and hardware regularly per applicable inspection standards prior to each use.