Houston TX USA
Traveling Blocks The side plates made of heavy steel provide a sufficient weight so that the wireline is kept taut when hoisting and lowering the empty elevator, which facilitates the drum to wrap the line, speeds up the lowering of the unloaded tackle and prolongs the line service life. The sheave groove size and the contact surface radius of the bail conform to API 8A specification. Sheave grooves are medium-frequency induction hardened, which can prolong the sheave service life. Sheaves and bearings of the traveling block can be interchanged with those of the crown block.