The advantages of using McKissick sheaves and blocks for oilfield drilling purposes

Oilfield drilling is one of the most common rigging and mining projects that are handled by shipping and rigging companies. Specialized equipments such as blocks and sheaves are utilized for the purpose of oilfield drilling. These components are manufactured by different brands and companies associated with the marine equipments industry. One of these brands, known as the Crosby Group, is known for producing an extensive line of sheaves and blocks that belongs to the McKissick series. These McKissick sheaves and McKissick blocks have already been widely praised in various sectors of the shipping industry due to their functional effectiveness. So let’s take a look at the various features of these equipments and the advantages of using them.

Stepped hub design offers better service

The stepped hub design of these equipments can get rid of stress failure in weld, a common issue associated with the traditional sheave designs. The hub is placed in position with proper metal to metal contact. It helps to ensure accurate alignment to sheave axis which guarantees that there is no looping or wobble of rotating sheave. This high precision alignment of the McKissick sheaves and hub greatly enhances bearing life of the system.

Roll forging of the sheaves offer better life performance

Roll forging is a process that allows forming the flange and groove walls in numerous steps, which in turn eliminates the necessity to split the groove. While groove splitting automatically reduces the strength of the groove section, this forging process allows in adding more strength to it. It is for this reason that McKissick sheaves comes with the guarantee of enhanced life performance. The sheaves are forged in a way that helps to distribute wire rope force evenly over the properly formed load surface. The uniformity of roll-forged groove also adds to the life of the wire rope. 

Solid steel body without any casting adds to robustness of the sheaves

Each and every McKissick sheave unit is made out of a single plate made of solid carbon steel. There are no inherent web or rim flaws associated with these sheaves like those that are commonly found with the cast sheaves. The standard McKissick roll-forged sheaves also offer better balance as well as even distribution of forces. Unlike cast sheaves that often has issues like uneven stress and easy failure; the McKissick sheaves are completely protected from the possibility of such occurrences.      

Extensive line of sheaves offered by Crosby

The McKissick roll-forged sheaves come in an extensive line of sizes ranging anywhere between 12 and 72 inches. The bearing styles and their prices also vary greatly, thereby offering plenty of choices for the buyers. Moreover, Crosby also offers custom designed McKissick sheaves as well as makes small modifications to various standard sheave models so that they can fit the requirements for special applications. 

Apart from McKissick sheaves and McKissick blocks, Crosby Group is also known for designing and developing numerous other types of marine equipment as well, such as Mooring sockets, hooks & swivels, wire rope end fittings and stainless steel wire rope units.