Mckissick® Overhaul Balls
UB500 Series top swiveling overhaul balls

• The top swivel design on the UB500 assures the ball remains stationary if the wire line spins.
• The swivel incorporates a sealed roller thrust bearing together with a grease fitting for easy lubrication.
• Each ball can be equipped with the new McKissick US422 wedge socket which can be easily adjusted to fit various sizes of wire rope by changing the wedge (ensure that correct wedge is used for selected wire rope size).
• Design factor 4:1
• All hooks used on UB500 overhaul balls (S320, S320N and S316A) are forged from alloy steel. The S320 and S320N hooks complete with latches.
• Sizes 3.6 tonnes through 9 tonnes available with Crosby’s S316A “Positive Locking” SHUR-LOC® hook which may be used for lifting personnel.Meets OSHA Rule 1926.550 (g).
• The S320 hook (PL latch) and 320N hook (S4320 latch), with the proper latch attached, may be used for personnel lifting when secured with proper device (Bolt, nut and pin for the PL latch; Cotter pin for the S4320 latch). Meets OSHA Rule 1926.550 (g)

Hook is New S-320N style. Replacement lath kit is S-4320. PL latch and S-4055 latch will not fit. Standard Crosby S-5 Thrust Bearing style swivels cannot be used with UB500 Overhaul balls.