Brewer Machine & Gear Co.

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St. Louis, MO  |  314-534-4021

At Brewer Machine & Gear Co., we take pride in our long-standing expertise in precision gear manufacturing and machining. Our focus has always been on delivering gears that combine accuracy, durability, and performance, serving the needs of industries that rely on dependable power transmission. We specialize in producing custom gears of various sizes and configurations, tailored to exacting requirements, whether for heavy-duty industrial machinery, specialized equipment, or intricate assemblies. Every gear we produce is backed by a commitment to quality craftsmanship and rigorous standards that ensure consistent performance under demanding conditions.

Our capabilities extend beyond gear cutting itself, as we bring together advanced machining, heat treating, and finishing processes that allow us to control every step of production. By maintaining tight tolerances and using carefully selected materials, we deliver gears that stand up to challenging applications, from high-speed drives to high-torque systems. We also offer repair and reconditioning services, giving customers a reliable option to extend the service life of critical components. In doing so, we help reduce downtime and keep operations running smoothly.

Gears Power Pages

Bevel Gears

Bevel Gears

A bevel gear is a toothed rotating machine element used to transfer mechanical energy or shaft power between shafts that are intersecting, either perpendicular or at an angle. This results in a change in the axis of rotation of the shaft power…

Helical Gears

Helical Gears

A gear is a particular kind of simple machine that controls the strength or direction of a force. A gear train is made up of multiple gears that are combined and connected by their teeth. These gear trains allow energy to move from…

Planetary Gears

Planetary Gear System

A planetary gear is an epicyclic gear that consists of a central gear, referred to as the sun gear and serves as the input gear, which has three or more gears that rotate around it that are referred to as planets. The planet gears engage with a ring gear that encircles the sun…

Plastic Gears

Plastic Gears

A plastic gear is a toothed wheel made up of engineering plastic materials that work with others to alter the relation between the speed of an engine and the speed of the driven parts. The engineering plastic materials used in manufacturing plastic gears can be…

Spur Gears

Spur Gears

A spur gear is a cylindrical toothed gear with teeth that are parallel to the shaft and is used to transfer mechanical motion and control speed, power, and torque between shafts. They are the most popular types of cylindrical gears and…

Worm Gears

Worm Gears

A worm gear is a staggered shaft gear that creates motion between shafts using threads that are cut into a cylindrical bar to provide speed reduction. The combination of a worm wheel and worm are the components of a worm gear…

Types of Gears

Types of Gears

A rotary circular machine with a tooth in its structure and is used to transfer torque and speed from one shaft to another is called a gear. Gears are also known as cogs and have cut teeth in the cogwheel or gear wheel…

Ball Screws

Ball Screw Animation

Ball screws are mechanical linear actuators that consist of a screw shaft and a nut that contain a ball that rolls between their matching helical grooves. The primary function of ball screws is to convert rotational motion to linear motion…

Lead Screw

Lead Screws

A lead screw is a kind of mechanical linear actuator that converts rotational motion into linear motion. Its operation relies on the sliding of the screw shaft and the nut threads with no ball bearings between them…

Power Transmission Equipment

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