For over a century, engineers and inventors have aspired to create efficient rotary machines capable of achieving high pressures at variable speeds. In 1906, this vision was realized with the advent of mutually generative rotors, or gerotors.

Automotive Lift Repair Florida Gerotors, featuring only two moving parts, are both simple and versatile in design. Despite their simplicity, they are capable of producing a wide range of flows and pressures, and can pump liquids of nearly any viscosity. They are suitable for use wherever gear, crescent, or vane pumps are employed in fluid power and transmission applications. Compared to other positive displacement pumps, gerotors offer several advantages: they require less input horsepower, have fewer parts, produce less noise, deliver high torque at low speeds while performing exceptionally well at high speeds, and are compact and cost-effective. Gerotors are also highly efficient, accommodating flows from fractional rates to over 100 gallons per minute and pressures ranging from vacuum to over 3000 pounds per square inch.

Applications of gerotors include engine lubrication, fuel transfer, hydraulic pumps, hydrostatic transmissions, hydraulic motors, cooling systems, air motors, and vacuum pumps. They are also used in hydraulic systems for off-highway and lawn care equipment and are especially useful where a compact package is needed. As gerotor designs continue to evolve, so do their applications. By collaborating with a supplier, buyers can obtain custom-designed gerotors tailored to their specific performance, reliability, and cost requirements. This article offers an overview of gerotor design and provides guidance on selecting and working with a supplier.

Basic Automotive Lift Repair Florida Gerotor Design

An ideal rotary machine must have at least two active members. In a gerotor, these components are the rotors. To minimize wear while under pressure, the movement of one rotor should closely match that of the other, traveling in the same direction and at a similar speed. The chambers created by the rotors should open and close like a piston and cylinder, necessitating continuous contact between rotor contours.

Steady fluid flow and torque are best achieved when one rotor is nested inside the other, with one rotor featuring one less curved division than the other. The rotor curves are rounded, and the divisions form a series of convex-concave curves. Proper contact and driving relations between the rotors establish a mutually generative relationship.

Choosing and Working with a Automotive Lift Repair Florida Supplier

Few suppliers worldwide are recognized as leading designers and manufacturers of gerotors, with most specializing in powdered metal parts. It is advisable to visit potential suppliers’ facilities to assess their capabilities and meet key personnel, ensuring their commitment to quality and timely delivery. Suppliers should have:

Selecting a supplier who can evaluate your needs and design a gerotor specifically for your application is crucial. Working closely with the supplier will help ensure that the final gerotor design meets your specifications and optimizes cost and performance.

The gerotor stands out as a unique machine. When considering a hydraulic pump or motor for fluid power or transfer, the gerotor offers high reliability, efficiency, and cost-effectiveness.

Motors are versatile components used across various industries, from construction and agriculture to vocational trucking. They power a wide range of applications, including food-processing machinery, augers, and many other devices essential to our daily lives. While not every application needs rotary power, those that require low speeds and high torque—such as rotating a cement mixer for concrete or a feed spreader for distributing seeds—demand a specific type of motor.

In these scenarios, where heavy loads necessitate substantial torque to start and operate at low speeds, a standard gear pump might not suffice. Instead, a motor with a rotor assembly featuring either a gerotor or roller gerotor design is ideal. Understanding these two designs will help you choose the best option for your specific needs.

Automotive Lift Repair Florida Gerotor Design

Motors with a gerotor design are compact and suited for light-duty, low-pressure applications. This design includes a stationary ring called the stator and a moving, star-shaped rotor. The stator, machined into the metal housing, forms the motor’s displacement chambers, while the rotor turns within it. As oil flows through the rotor assembly, it moves through pressure zones from high to low, causing the rotor to turn against the stator and converting fluid power into rotary power and torque.

While gerotors are cost-effective and versatile, they have looser tolerances compared to other designs. The gaps between the stator and rotor allow more oil to slip through, reducing the efficiency of torque conversion. Over time, the wear from the moving parts can be significant, making them less suitable for medium to heavy-duty and high-pressure applications.

Automotive Lift Repair Florida Roller Gerotor Design

The roller gerotor design operates similarly to the gerotor, with oil converting fluid power into rotary power and torque. However, it differs by using roller pins instead of relying solely on the stator’s wall to form the displacement chambers. These roller pins create a tighter fit and better tolerance, reducing oil slippage and allowing the motor to generate more torque. Roller gerotor motors are more durable, resist wear better, and generally have a longer lifespan and higher performance, though they come at a higher cost.

When selecting a Automotive Lift Repair Florida motor, it’s crucial to evaluate the specific requirements of your low-speed, high-torque application and consider the benefits and costs of each design. The gerotor design might be sufficient for lighter applications, while the roller gerotor design offers greater robustness and efficiency for more demanding tasks.

The gerotor pump is a relatively recent innovation in the automotive industry, although its fundamental design concept dates back to the early 19th century. The term “GeRotor” combines “GEnerating” and “ROTOR” and refers to a pump design featuring two key components: an inner rotor and an outer rotor. The inner rotor, based on a trochoidal shape, has one fewer tooth than the outer rotor, and both rotors are positioned with a fixed eccentricity. 

Although the Automotive Lift Repair Florida gerotor pump has been around for a while, its benefits were not fully recognized in the automotive sector until the early 1980s. Today, it is one of the most commonly used types of oil pumps in the industry.