Bobcat Boom Cylinder Excavator

By Robert Romboa •  Updated: 10/13/22 •  9 min read

The boom cylinder is the component that allows the operator to raise or lower the boom. There are numerous revisions to the boom cylinder so it is important to find a replacement that fits your specific model and serial number. Fortunately, Bobcat has an Online Parts Catalog that will help you determine which replacement is right for your machine.

HYBRID loader arm energy recovery and regeneration

HYBRID loader arms are equipped with a system that can regenerate energy in the boom cylinder. This system utilizes a hydraulic motor and accumulator to store energy that is normally lost during the extension and retraction process of the boom cylinder. The stored energy can be used to power the main pump or cylinder.

The potential energy recovery device is installed on the swing arm 15 of the excavator. It is connected to the boom cylinder control valve. The hydraulic pumps have a capacity of 160 ml/r. A HySense QT100 turbine flowmeter measures the output flow of the two hydraulic pumps. The energy recovery system also utilizes linear actuators that control the bucket and boom.

The energy regeneration system is designed to maximize energy recuperation and decrease fuel consumption. It is also designed to improve the operability of the boom cylinder. It is compatible with any boom cylinder excavator. Its energy recovery efficiency is approximately 40% and it reduces fuel consumption by 50%.

The system 40 is also compatible with hydraulic excavators. These excavators typically make multiple movements at once and have a variety of assistive and resistive loads on their actuators. This is a very good platform for implementing systems 40.

A second control valve, called an inverter, controls the flow of hydraulic fluid. The valve’s spool moves according to pressure and controls the area of the opening. The system also stores electrical energy. A controller is used to regulate the energy recovery and regeneration process.

The main research direction in this area is optimization-based control strategies. There are two main types of optimization algorithms: global optimization and real-time optimization. Global optimization uses a fixed driving cycle, whereas real-time optimization applies an instantaneous cost function.

Double-acting cylinders

Double-acting boom cylinders are the most common type of hydraulic cylinders in excavators. They’re typically made of stainless steel or aluminum alloys and feature welded bodies that cannot be disassembled for repairs or seal replacement. These cylinders offer high levels of durability but are less cost-efficient.

These cylinders are mounted on the boom with either side lugs or fixed mounts. Pivot mounts are installed with dowel pins or bolts that are placed on both sides of the cylinder. They allow the cylinder to change alignment along its centerline and actuate loads traveling through an arc.

Double-acting boom cylinder excavector cylinders work by diverting fluid from one side of the cylinder to the other. This creates push and pull forces that move the ram in either direction. Double-acting cylinders work best in excavators that require great force to move the boom. The cylinders are also useful for mobile applications.

A double-acting cylinder has two chambers: the cylinder rod and the hydraulic fluid. The chamber with the cylinder rod has very little surface area in contact with the hydraulic fluid, so the pressure needed to retract the rod is lower. A double-acting cylinder requires a larger housing and a larger coupling.

A telescopic cylinder is a popular type of hydraulic cylinder. It contains up to five sets of tubing nested inside one another. They contain bearing surfaces and seals. Telescopic cylinders can be up to 15 times longer than standard cylinders.

Cylinders are generally designed for a specific application. For example, a cylinder that works in a hot zone requires a seal that won’t melt. A common material used for high-temperature cylinders is Viton, while a cylinder designed for cold environments uses polyurethane.

What Is the Price Range for a Bobcat Boom Cylinder Excavator Compared to a New D11 Dozer?

The price range for a Bobcat boom cylinder excavator can vary greatly depending on the specific model, size, and any additional features. On average, these excavators can range from $10,000 to $ 50,000. On the other hand, the new d11 dozer cost is considerably higher, usually exceeding $1 million.

Electric power

Electric power consumption in a boom cylinder excavator can be significantly reduced by using a new coordination method. The constant speed method uses 2.67 kW of electric power, while the new designed method uses 0.62 kW. By using the new coordination method, electric power consumption can be reduced by up to 75%.

An electric motor drives a hydraulic pump, which then sends working fluid through a hydraulic hose. An independent metering in and out system distributes this fluid to the actuators, such as the boom cylinder and arm cylinders. The bucket cylinder uses a traditional three-position four-way proportional valve.

The system of the present disclosure reduces energy loss during excavation by recovering regenerative energy from the boom. It also ensures the proper operating performance of the boom. The hydraulic system may be run with a separate electric motor or a hydraulic pump motor. An excavator with a regenerative energy recovery system can operate at a lower fuel consumption.

Another important feature of this power source is that it can work efficiently even when the machine is in idle mode. The system has an auxiliary accumulator to reduce the amount of energy consumed during partial load or idle periods. This is a good way to reduce the electrical power consumption of a boom cylinder excavator.

Electric power for boom cylinder excavators are necessary for a variety of different tasks. For instance, boom cylinder excavators can be used for demolition. A boom cylinder excavator can also be used to dig out soil and break up rocks.

Electric energy input to the servo motor driver

Among the various functions of servo motor driver, the hydraulic power input plays a crucial role. The hydraulic system is composed of pump and accumulator. When the boom is moving, the pump’s pressure reduces from 6.9 MPa to 1.7 MPa. This configuration allows the boom cylinder to be operated at its lowest power level and the energy efficiency is increased.

The servo motor driver of a boom-cylinder excavator controls the boom extension and retraction processes. The main task of a boom cylinder is to lift a load to a specified position. The hydraulic system must avoid overrunning and resistance during extension and retraction processes.

Electric energy regeneration is a cost-effective method to recover lost energy from hydraulic systems. Electrical ERS have high efficiency and low cost. A study by Yu et al. demonstrated that this method reduced energy loss at the main control valve. The study found that the electrical energy regeneration efficiency could reach 57.4%, which was satisfactory for this type of operation.

Electric energy input to the servo motor drive of a boom cylinder excavate is highly dependent on the servo motor driver’s capacity and voltage. Too much current or voltage could damage the device and endanger the operator. It is also crucial to select a battery size appropriate to the type of excavator and the energy management strategy.

Electric energy input to the servo motor drive of a boom cylinder excavate is a key component for controlling a boom cylinder excavator. The servo motor driver uses an asymmetric pump powered by a servo motor. The servo motor driver also uses a small gear pump to compensate for unbalanced flow. Moreover, additional instruments are employed to detect various variables. These instruments are connected via a mutual DC bus.

How Does the Bobcat Boom Cylinder Excavator Compare to a Side Boom?

When comparing a Bobcat boom cylinder excavator to a side boom, it is essential to understand the side boom definition and use. The Bobcat boom cylinder excavator is designed for more compact spaces and lighter loads, while a side boom is typically used in larger-scale excavation projects for heavy lifting and long reach capabilities.

Proper maintenance of hydraulic cylinders

Proper maintenance of hydraulic cylinders is essential for a boom cylinder excavator to ensure safe and efficient operation. When inspecting a hydraulic cylinder, you should check the seals for leaks and damage, and replace old seals if necessary. You should also check the hydraulic system to ensure the oil is at the right temperature. When the oil temperature is low, varnish could appear. It may be an indication of a higher-temperature problem. Another sign of a bad hydraulic system is a worn pivot pin or clevis. Worn joints will cause misalignment and damage.

Proper maintenance of hydraulic cylinders on a boom cylinder excavator requires the proper oiling and filtering of components. Dirty oil reduces the efficiency of hydraulic cylinders and can cause internal leaks. This can result in wasted horsepower and overheating.

Proper maintenance of hydraulic cylinders on a boom cylinder excavator is crucial to ensure safe operation and prevent costly downtime. Inspect cylinders on a regular basis. Using high-quality filtration is essential. You should also check for leaks and damage. It is also important to check the condition of the rods and the mounts and pins. Replace any worn parts.

If you have to replace the hydraulic cylinders on a boom cylinder excavator, you should know how to replace them. Make sure you have the right connections, end damping, and fittings. Also, you should ensure that the new cylinder is installed in the correct location.

If you notice slow movements or unusual movements, you should immediately inspect the cylinders. Any abnormal movement can be a sign of a faulty hydraulic system. A leaky hydraulic cylinder can cause unsafe working conditions, and it can cause costly downtime. It may also damage the hydraulic system and the equipment. To prevent these issues, it is recommended that you use purpose-built cylinders.

Robert Romboa

Just amazed daily by the heavy machinery used to make our days easier and allow for fast and simple construction from your backyard to a city!