McKissick UB-550S - 7 Ton

Product Description

The McKissick UB-550S is a 7 Ton capacity utility overhaul ball designed for use in crane and rigging applications where a top swivel attachment is required. Overhaul balls are used to add weight below a crane hook block, ensuring the hook block travels downward smoothly under its own weight when the load line is slackened. The swivel attachment on the UB-550S allows free rotation of the load line connection, reducing line twist and improving operational efficiency during repeated lifting cycles.

The UB-550S utility series is built for general-purpose 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 provides the necessary dead weight to overhaul the block. This design is particularly valuable in applications involving long line lengths or frequent load cycling where line twist accumulation would otherwise become a concern.

McKissick has a long-standing reputation in the crane and rigging industry for producing reliable lifting hardware. The UB-550S reflects that heritage with a straightforward, field-proven design suited to demanding jobsite conditions. Always confirm that the overhaul ball's rated capacity is appropriate for the crane and rigging configuration in use, and inspect the swivel and attachment hardware regularly for wear or damage.

Material: Steel construction

Compatible With: Crane hook blocks and rigging configurations requiring overhaul weight Standard swivel attachment rigging hardware

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

Key Features: 7 Ton rated capacity Utility series overhaul ball Top swivel attachment for free rotation and reduced line twist McKissick UB-550S 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.