beam pumping units

Descripción del producto

Equalizer beam bearing assembly

Crank Pins

Double Helical Gears

horsehead

Brake

Counterbalance Weights & Crank Arms

Center Beam Bearing Assembly

Gear Reducer
  The Sentry gear box utilizes a combination of a ductile iron housing, and forged, high-tensile cast-steel gearing to produce a gear box that is vastly superior to the common cast and steel combinations. All Sentry gear reducers feature precision machined high tensile, double helical gears. The heat-treated steel gear teeth significantly exceed API criteria for pitting and bending stresses. Our design allows extra wide gear tooth interfaces for uniform loading and equalized stress during peak torque operation.

A rugged, fully machined ductile iron case houses component gears, with a split centerline for easy disassembly while alloy steel shafts rotate in oversized precision roller bearings ensuring that there is no bronze bushing to seize and no shaft wear from rotational contact.

In addition, there is no oil pump to fail or maintain. Add to that a generous center relief that ensures positive flow to all gear tooth interfaces and a submerged gear and wiper system which delivers a constant supply of lubricant to the oil galleries and you have a hardworking gear box of the highest possible quality and craftsmanship.