JCB 4CXTRA, 1997 Technical Specifications
| SideShift or CenterMount | CM |
| SAE dig depth (mm) | 5230 |
| Reach @ ground level (mm) | 6480 |
| Loading height (mm) | 3990 |
| Bucket width, min-max (mm) | 305-1100 |
| Bucket breakout (kgf) | 6124 |
| Dipper breakout (kgf) | 4125 |
| Slew System | Twin ram |
| Loader Bucket Capacity (m3) | 1.2 |
| Dump height (mm) | 3200 |
| Bucket width (mm) | 2438 |
| Bucket breakout (kgf) | 6121 |
| Engine Make & Model | Perkins 1004.4HRT |
| Engine power (kW@rpm) | 68@2200 |
| Engine displacement (lit) | 4 |
| Number of cylinders | 4 |
| Pump type | 2xGear |
| Pump flow (lit/min) | 154 |
| Relief valve pressure (bar) | 228 |
| Transmission type | Full PS |
| Drive | 2WD/4WD |
| Speeds, FR | 44 |
| Maximum speed (km/h) | 35 |
| Ride control (Std/Opt/NA) | — |
| Travel length (mm) | 9140 |
| Travel height (mm) | 4190 |
| Width (mm) | 2438 |
| Turn circle radius without brakes (mm) | 9090 |
| Operating weight (kg) | 7981 |
| Model | 4CXTRA |
Introduction
The JCB 4CXTRA is a backhoe loader designed for rugged applications in construction and excavation. Its technical specifications reveal a range of features that provide advantages and disadvantages in different contexts. This article will provide a comprehensive analysis of these features, highlighting their practical applications and relevance to users.
SideShift or CenterMount
The JCB 4CXTRA is equipped with a CenterMount backhoe. This configuration offers greater stability and balance when digging, as the weight is evenly distributed between the front and rear axles. This feature is particularly useful when working on uneven terrain or lifting heavy loads. However, it may limit the operator’s visibility when maneuvering in tight spaces, as the backhoe is located in the center of the machine.
SAE Dig Depth
The 5230 mm SAE dig depth of the JCB 4CXTRA is among the highest in its class. This allows it to reach deeper into the ground and excavate more efficiently. It is especially useful when digging foundations, trenches, or underground utilities. However, this feature may be less relevant when working on shallower excavation projects, where a lower dig depth may be sufficient.
Reach at Ground Level
The 6480 mm reach at ground level of the JCB 4CXTRA is also a significant advantage. It allows operators to access hard-to-reach areas without repositioning the machine, thus saving time and improving efficiency. This feature is especially useful when working in tight spaces or alongside buildings. However, it may be less relevant in open areas where there is ample space for maneuvering.
Loading Height
The 3990 mm loading height of the JCB 4CXTRA is relatively high compared to other models in its class. This makes it easier to load materials onto trucks or other containers without the need for additional equipment. It is particularly useful when working on construction sites with limited space or access. However, this feature may be less relevant when working on larger sites where loading height is not a limiting factor.
Bucket Width
The minimum-maximum bucket width of the JCB 4CXTRA is 305-1100 mm. This range allows operators to select the optimal bucket size for their specific application. A wider bucket may be more efficient for large-scale excavation projects, while a narrower bucket may be better suited for precision work. However, the range may not be as versatile as some other models that offer a wider spectrum of bucket sizes.
Bucket Breakout
The JCB 4CXTRA has a bucket breakout force of 6124 kgf. This feature allows it to penetrate hard ground or compacted soil with ease, reducing the need for additional tools or equipment. It is particularly useful when excavating rocky terrain or when working with heavy materials such as concrete or asphalt. However, a high breakout force may also make the machine more difficult to control, especially for less experienced operators.
Dipper Breakout
The dipper breakout force of the JCB 4CXTRA is 4125 kgf. This feature provides additional power when digging, allowing the machine to penetrate deeper into the ground. It is particularly useful when excavating deep trenches or when digging in hard soil. However, a high dipper breakout force may also increase the risk of machine instability, especially when working on steep terrain.
Slew System
The twin-ram slew system of the JCB 4CXTRA provides smooth and precise control when rotating the backhoe. This feature is particularly useful when working in tight spaces or when positioning the machine for precise digging. However, it may be less relevant when working on larger sites where maneuverability is not as critical.
Loader Bucket Capacity
The JCB 4CXTRA is equipped with a loader bucket with a capacity of 1.2 cubic meters. This allows operators to handle large volumes of materials without the need for additional equipment. It is especially useful when working on excavation projects that require both digging and filling tasks. However, a large bucket may also reduce the machine’s stability and increase the risk of tipping.
Dump Height
The 3200 mm dump height of the JCB 4CXTRA allows operators to unload materials into high containers without the need for additional equipment. It is particularly useful when working on multi-story construction sites or when loading materials onto trucks with elevated cargo beds. However, a high dump height may also reduce the machine’s stability, especially when working on uneven ground.
Engine Specifications
The JCB 4CXTRA is equipped with a Perkins 1004.4HRT engine with a power output of 68 kW at 2200 rpm. This provides sufficient power for most excavation and construction tasks, allowing the machine to perform efficiently and reliably. However, the engine may be less powerful than other models in its class, which could limit its performance in more demanding applications.
Transmission Type
The JCB 4CXTRA is equipped with a full powershift (PS) transmission. This feature provides smooth and efficient shifting between gears, allowing the machine to maintain optimal performance in different operating conditions. It also allows operators to shift between 2WD and 4WD modes as needed, providing additional flexibility and control. However, a full PS transmission may also be less durable than other types of transmissions, which could increase maintenance costs over time.
Speed and Travel
The JCB 4CXTRA has a maximum speed of 35 km/h and can travel up to 9140 mm in length and 4190 mm in height. This provides sufficient speed and mobility for most excavation and construction tasks, allowing the machine to move quickly and efficiently between job sites. However, the machine’s turning radius without brakes is relatively wide, which may limit its maneuverability in tight spaces.
Ride Control
The JCB 4CXTRA does not come with ride control as a standard feature. This means that the machine may experience more vibrations and shocks when operating on rough terrain. However, ride control can be added as an optional feature, which may improve operator comfort and reduce fatigue during long working hours.
Operating Weight
The JCB 4CXTRA has an operating weight of 7981 kg, which is relatively light compared to other models in its class. This provides several advantages, such as greater mobility and lower fuel consumption. It also allows operators to transport the machine more easily between job sites. However, a lighter machine may also be less stable and more prone to tipping, especially when working on steep terrain.
Overall Assessment
The JCB 4CXTRA is a versatile and reliable backhoe loader that provides a range of features and specifications suited for various excavation and construction tasks. Its CenterMount backhoe, high dig depth, and high reach at ground level make it especially useful for digging deep foundations or excavating hard-to-reach areas. Its loader bucket capacity and dump height allow it to handle large volumes of materials without the need for additional equipment. However, its relatively light operating weight may limit its stability and increase the risk of tipping, especially when working on steep terrain. Overall, the JCB 4CXTRA is a solid choice for most excavation and construction applications, providing sufficient power, mobility, and flexibility for most users.
