Center Bearing Assembly
Lone Star’s Center Bearing Assembly uses bearings that are heavy-duty, self-aligning and anti-friction. Our metal-to-metal seal eliminates damage resulting from over-lubrication. Conveniently, all bearings and oil seals are readily available through standard suppliers.
Crank Pin Assembly
We designed our crank pin assemblies with double-row, self-aligning bearings bearings in large sizes that ensure the longest wear-life expectancy in the industry. Damage and downtime is all but eliminated thanks in part to special features like our high-alloy steel sleeves in the crank hole.
Lone Star ALS has eliminated from its Crank Pin Assemblies all sleeves, washers, and keys which are commonly used by other pumping unit manufacturers. Lone Star’s crank pins fit tightly into tapered inserts which are permanently pressed into every crank arm hole.
Equalizer Bearing Assembly
We encase our massive, double-row, self-aligning spherical bearing in a robust cast-steel bearing housing to provide steady equalization of loads on the crank pins and pitmans. A ground level lubrication system is standard.