Kennedy Wire Rope & Sling, Co.

Construction and Crane Blocks

Page 233

Some of the most important considerations in your
block requirements are:

AVAILABLE BEARING TYPES

Bronze Bushed — S.A.E. 660 bronze with figure “8” oil groove (See Fig. B-1).
Double row sealed tapered roller bearing (See Fig. T-1).
Straight roller bearing (See Fig. R-1).

Fig. B-1

Fig. T-1

Fig R-1

Unretouched Photograph of a section cut from a flame-hardened McKissick sheave (etched 2 Minutes) (NH₄)₂S₄0₈).

THE SHEAVE

Note the groove form with proper line support and gently rounded lips to prevent line chaffing when fleet angles etc. are present.
Note the groove is completely machined to proper line size.
Note the dense martensitic structure clearly outlined by the etch. This flame hardened surface in the wear area of the sheave always presents a smooth, uncorrugated, proper size groove face to the line. Sheaves 14" diameter and over flame hardened in groove to minimum 35 Rockwell “C”. Smaller sheaves can be flame hardened on special order.

AVAILABLE CONNECTIONS


ALL CRANE AND CONSTRUCTION BLOCKS CAN BE FURNISHED WITH:
Swivel shackle, in selected capacities, with bronze thrust or roller thrust bearing.	Single hook in capacities to 300 tons. (See page 330)	Duplex swivel hook in standard capacities to 1,000 tons. Larger sizes available. (See page 332)	Quad swivel hook from 200 tons and larger.

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Catalog provided courtesy of The Crosby Group, Inc.