Caterpillar 446B, 1994 Technical Specifications
| SideShift or CenterMount | CM |
| SAE dig depth (mm) | 5173 |
| Reach @ ground level (mm) | 7866 |
| Loading height (mm) | 4310 |
| Bucket width, min-max (mm) | 457-914 |
| Bucket breakout (kgf) | 6153 |
| Dipper breakout (kgf) | 4388 |
| Slew System | Cylinder |
| Loader Bucket Capacity (m3) | 1.1 |
| Dump height (mm) | 2699 |
| Bucket width (mm) | 2434 |
| Bucket breakout (kgf) | 5460 |
| Engine Make & Model | Cat 3114T |
| Engine power (kW@rpm) | 71@2200 |
| Engine displacement (lit) | 4.4 |
| Number of cylinders | 4 |
| Pump type | VDAP |
| Pump flow (lit/min) | 162 |
| Relief valve pressure (bar) | 20000 |
| Transmission type | Powershift |
| Drive | 2WD/4WD |
| Speeds, FR | 44 |
| Maximum speed (km/h) | 37 |
| Ride control (Std/Opt/NA) | — |
| Travel length (mm) | 7954 |
| Travel height (mm) | 4193 |
| Width (mm) | 2434 |
| Turn circle radius without brakes (mm) | 8408 |
| Operating weight (kg) | 9160 |
| Model | 446B |
Introduction
The Caterpillar 446B is a powerful and versatile backhoe loader designed for a variety of applications in construction, excavation, and other heavy-duty tasks. Its features and specifications make it an ideal choice for users who need a reliable and efficient machine that can adapt to various work conditions and requirements. However, like any equipment, there are advantages and disadvantages to consider before making the decision to invest in this model. This article will provide an in-depth analysis of the relevant features and specifications of the Caterpillar 446B, highlighting both its strengths and limitations.
SideShift or CenterMount
One of the most significant features of the Caterpillar 446B is its ability to operate as either a SideShift or CenterMount machine. This versatility allows the operator to choose the best configuration for the task at hand, making it easier to access the work area and increase productivity.
Advantages:
The SideShift configuration enables the machine to have a shorter overall length, providing better maneuverability in tight spaces, such as urban or suburban environments. The CenterMount configuration, on the other hand, enhances the stability of the machine, especially when working with heavier loads or on uneven terrain. This feature increases operator comfort, control, and safety.
Disadvantages:
Choosing the wrong configuration for the work environment can lead to reduced performance and potentially dangerous situations. For example, operating in the CenterMount position on a job site with limited space can result in limited access to the excavation area, which may require additional time and effort to complete the task. Similarly, working in SideShift mode on an uneven surface can cause instability and make the machine more prone to tipping over.
SAE dig depth
The SAE dig depth is a crucial specification to consider when purchasing a backhoe loader, as it determines the maximum depth that the machine can excavate.
Advantages:
With a dig depth of 5173 mm, the Caterpillar 446B is capable of reaching deep into the soil, making it ideal for tasks that require substantial digging. This feature makes it possible to complete excavation or foundation work in a shorter amount of time, thereby increasing overall productivity.
Disadvantages:
A deeper dig depth may not always be necessary, and in some cases, it may even be a disadvantage. For example, working on a site with shallow soil may not require a machine with such a deep dig depth, so investing in the Caterpillar 446B may be an unnecessary expense. Additionally, when working on a steep incline, a machine with a shallower dig depth may be more suitable to prevent potential tipping or loss of control.
Reach @ ground level and Loading height
The reach @ ground level and loading height are two critical specifications that determine the machine’s ability to access the work area and load materials into the machine.
Advantages:
With a reach @ ground level of 7866 mm and a loading height of 4310 mm, the Caterpillar 446B provides a large working envelope, which enables it to access hard-to-reach areas with ease and load materials quickly and efficiently. This feature increases productivity and versatility, making it suitable for a wide range of tasks.
Disadvantages:
In some cases, a high loading height may not be necessary or even desirable. For instance, when working in a residential area with low overhead clearance, a machine with a lower loading height may be needed to prevent potential damage to nearby structures. Similarly, when working in a confined space, a machine with a shorter reach may be more practical to avoid collisions or accidents.
Bucket width, min-max
The bucket width is another important specification to consider when choosing a backhoe loader, as it determines the size and volume of materials that the machine can handle.
Advantages:
With a minimum-maximum bucket width of 457-914 mm, the Caterpillar 446B is highly adaptable to different tasks and materials. A narrower bucket width is best suited for precision excavation work, while a wider bucket can handle large loads and increase productivity. This feature makes it ideal for a variety of tasks, from digging trenches to loading trucks.
Disadvantages:
Choosing the wrong bucket width for the task at hand can result in reduced performance and even damage to the machine or surrounding structures. A bucket that is too narrow can lead to longer digging times, while a bucket that is too wide can overload the machine and cause tipping or loss of control. It is essential to choose the appropriate bucket size for each task carefully.
Bucket and Dipper Breakout
The bucket and dipper breakout are two crucial specifications that determine the machine’s lifting capacity and digging force.
Advantages:
With a bucket breakout force of 6153 kgf and a dipper breakout force of 4388 kgf, the Caterpillar 446B is capable of lifting heavy loads and digging through tough soil and rocks. This feature improves the machine’s productivity and efficiency, making it an ideal choice for challenging tasks that require substantial force.
Disadvantages:
Investing in a machine with a higher bucket and dipper breakout force can increase the cost of the machine, making it less economically viable for some users. Additionally, using a machine with high breakout forces can cause damage to the surrounding environment or structures. Operators must take proper precautions when using the Caterpillar 446B to avoid accidents or damage.
Slew System and Loader Bucket Capacity
The slew system and loader bucket capacity are two essential features that determine the machine’s agility and material handling capabilities.
Advantages:
Using a cylinder slew system, the Caterpillar 446B can rotate the machine’s arm smoothly and with minimal effort. This feature provides precise control and better maneuverability, especially in tight spaces or when working around obstacles. With a loader bucket capacity of 1.1 m3, the machine can handle large volumes of material, increasing productivity and efficiency.
Disadvantages:
Some users may find operating a machine with a cylinder slew system challenging, especially if they are used to machines with different types of systems. Additionally, a larger loader bucket capacity can increase the weight at the front of the machine, causing instability and making it more prone to tipping or loss of control.
Engine Make & Model, Power, Displacement, and Number of Cylinders
The engine specifications determine the machine’s power output, fuel consumption, and emissions.
Advantages:
The Caterpillar 446B’s Cat 3114T engine is a reliable, durable, and efficient power source that can deliver up to 71 kW @ 2200 rpm. The engine’s displacement of 4.4 L and four cylinders provide adequate power to handle a variety of tasks while maintaining fuel efficiency and reducing emissions. Additionally, the engine is easy to maintain and service, reducing downtime and increasing productivity.
Disadvantages:
Choosing a machine with a more powerful engine can increase the machine’s cost, making it less affordable for some users. Additionally, investing in a machine with a larger displacement or number of cylinders may not always be necessary, especially if the machine will be used for light to moderate tasks. It is essential to carefully consider the application and working environment before selecting an engine with specific specifications.
Pump Type, Flow, and Relief Valve Pressure
The hydraulic system specifications determine the machine’s hydraulic power, speed, and pressure.
Advantages:
The Caterpillar 446B’s variable displacement axial piston (VDAP) pump can deliver up to 162 L/min of flow, providing the machine with ample hydraulic power and speed. The relief valve pressure of 20000 bar ensures that the machine can handle heavy loads and maintain stability, even under extreme conditions.
Disadvantages:
A hydraulic system with higher specifications can increase the machine’s cost and lead to increased maintenance and repair requirements. Additionally, using a machine with high
