JCB 4CXTRA, 1995 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 to be an all-purpose machine that can perform various tasks in construction, agriculture, and industrial settings. In this article, we will analyze the features and specifications of the JCB 4CXTRA to determine its advantages and disadvantages. The analysis will include the machine’s dig depth, reach, loading height, bucket width, bucket and dipper breakout, slew system, loader bucket capacity, dump height, engine make and model, engine power, engine displacement, pump type, pump flow, relief valve pressure, transmission type, drive, speeds, maximum speed, ride control, travel length, travel height, width, turn circle radius without brakes, and operating weight.
Advantages and Disadvantages
Dig Depth
The JCB 4CXTRA has a SAE dig depth of 5230mm, which is deeper than most backhoes in its class. This provides the machine with a significant advantage when digging deep trenches, foundations, or basements. However, this deeper dig depth also reduces the machine’s stability, making it more challenging to operate on uneven or unstable terrain.
Reach
The machine’s reach at ground level is 6480mm, a feature that allows the operator to dig out foundations or trenches without having to move the machine continuously. This feature also increases the machine’s productivity, making it possible to complete more work in less time. However, the long reach can also be a disadvantage, as it can cause the machine to be less stable and limit its ability to maneuver in tight spaces.
Loading Height
The JCB 4CXTRA has a loading height of 3990mm, which is relatively high. This makes it more comfortable for the machine to load material into large trucks or dumpers, reducing the need for additional loading equipment. However, this high loading height can also make it challenging to load material into lower vehicles or containers.
Bucket Width
The machine’s bucket width can be adjusted from 305mm to 1100mm, providing a significant operational advantage. The operator can use a narrow bucket to dig narrow trenches or a wider one to load more material into the bucket at once. However, the adjustable bucket width also affects the machine’s stability, as a wider bucket can make the machine top-heavy, leading to accidents.
Bucket and Dipper Breakout
The bucket breakout is 6124kgf, which is relatively high and provides the machine with an exceptional ability to dig even harder materials. The dipper breakout of 4125kgf is also impressive and makes the machine an excellent tool for digging deep trenches, even in hard ground. However, the high breakout force of the machine can also be a disadvantage, as it can lead to damage to the machinery or dangerous situations if the operator loses control of the bucket or dipper.
Slew System
Twin ram slew system is one of the JCB 4CXTRA’s most significant advantages, providing the machine with a high level of precision and control. The twin-ram design helps the machine rotate more precisely, and the operator can position the bucket or dipper with greater accuracy. However, the twin-ram design also makes the machine more complicated and more prone to breakdowns, leading to increased maintenance costs.
Loader Bucket Capacity
The loader bucket capacity of 1.2m3 is another of the JCB 4CXTRA’s advantages. The larger bucket and capacity enable the machine to load and remove more material in one scoop, ultimately reducing the number of trips required and saving both time and fuel. However, the larger bucket also makes the machine heavier and less stable, limiting its ability to maneuver on tight or unstable terrain.
Dump Height
The dump height of 3200mm is relatively high, allowing the machine to discharge the loaded material into trucks or containers with ease. This helps to boost the machine’s efficiency, reducing the time taken to load and move material. However, the high dump height also limits the machine’s ability to unload material in areas with low clearance, or where the machine cannot position itself correctly.
Engine Make and Model
The engine of the JCB 4CXTRA is a Perkins 1004.4HRT, a well-known and reliable engine in the industry. The engine provides the machine with a power output of 68kW at 2200rpm, which is more than enough to power the machine in most working conditions. However, the Perkins engine is relatively expensive to maintain, and the availability of spare parts may be limited in certain regions.
Engine Power and Displacement
The engine’s power output of 68kW is adequate, providing the JCB 4CXTRA with sufficient horsepower to tackle demanding tasks. The engine displacement of 4 liters also means the engine can deliver higher torque, leading to better performance. However, engines with higher power outputs can be more expensive and add more weight to the machine.
Pump Type and Flow
The JCB 4CXTRA’s hydraulic system is powered by two-gear pumps that provide a flow rate of 154 liters per minute. This flow rate is more than sufficient for powering all hydraulic functions of the machine, allowing it to perform various functions simultaneously. However, the system’s reliance on two-gear pumps makes it more complicated and more time-consuming to repair in case of breakdowns.
Relief Valve Pressure
The relief valve pressure of the JCB 4CXTRA is 228 bar, which is high enough to ensure that the hydraulic system operates at optimal pressure. The higher pressure facilitates quicker and more efficient movements and provides an extra layer of safety against overloading or breakdowns. However, the higher pressure can also lead to higher maintenance costs and a shorter lifespan for the hydraulic components.
Transmission Type and Drive
The transmission type of the JCB 4CXTRA is full PS, allowing the machine to move forward and backward with ease. The presence of 2WD/4WD options gives the operator flexibility, depending on the terrain they are working on. However, the presence of a more complex transmission system adds to the machine’s overall weight, limiting its speed and maneuverability on uneven terrain.
Speeds and Maximum Speed
The JCB 4CXTRA has a maximum speed of 35km/h, which is relatively high for a machine of its size. The machine’s top speed enables it to move between job sites quickly and efficiently, reducing the time and fuel required. The low gear speeds of 44 also make it easier for the operator to navigate challenging and unstable terrain with greater control. However, faster speeds also increase the risk of accidents or damage to the machine, especially on steep inclines or unstable terrain.
Ride Control
The JCB 4CXTRA does not come with a ride control system, which could pose a disadvantage in certain terrains. A ride control system can improve operator comfort by reducing the amount of bouncing or jolting the machine experiences. It can also reduce the amount of material lost when the machine is transporting loads. However, ride control is not always necessary, and the absence of this feature has no significant impact on the machine’s ability to perform its primary functions.
Travel Length, Height, Width, and Turn Circle Radius
The JCB 4CXTRA has a travel length of 9140mm, a travel height of 4190mm, and a width of 2438mm. The machine’s turn radius without brakes is 9090mm, which can be a disadvantage on tight job sites or confined spaces. However, the machine’s size and dimensions also provide it with stability and the ability to transport and carry loads safely and efficiently.
Operating Weight and Model
The JCB 4CXTRA has an operating weight of 7981kg, a relatively high weight that contributes to the
