Double-row Tapered Roller Bearings are set on the pulley shaft and each bearing row is equipped with single lubrication channel. The groove of pulley is manufactured strictly following up the standard of API 8C. To dramatically enhance the corrosion resistance capability, pulley grooves undergo surface heat treatment. To avoid the mud entering into the traveling block, side shields are furnished at the sides of traveling block. Bail is closely connected on side shields by two bail pins. The radius of contacting surface between bail and swivel is in accordance with spec. API 8C.
·Series of traveling blocks conform to API Spec. 8C.
·Sheave grooves are heat hardened to possess good abrasion resistance and long service life.
·The sheaves and bearings of travelling block can be shared with crown block.
|Max hook load kN(lbs)
|Wire rope dia. mm(in)