1、 Basic information of the whole machine
Cat 308E CR (Compact Radius Ultra Short Tail Rotation, 2013-2017 Production)
Produced in Jiangsu Wujiang Carter Joint Venture Factory
Operating weight of the whole machine (450mm steel track+enclosed cab, standard boom short arm, full fuel including driver) 7760kg (7.76 tons)
Simple sunshade with a total weight of 7620kg
Extended boom+steel track full weight 8330kg (8.33 tons)
Standard earthwork bucket capacity (SAE dump) 0.31m ³; Optional 0.20m ³ trenching bucket and 0.38m ³ heavy-duty earthmoving bucket
Standard bucket width (with side teeth) 840mm
Standard 450mm three bar wear-resistant steel track shoes; Optional 450mm thick rubber track (does not damage the pavement)
The chassis structure is fixed and widened, and cannot be extended or retracted; Bulldozer blade with a total width of 2320mm and floating leveling
CR ultra short tail with tail turning form, rear turning radius of only 1220mm, almost no wall cutting in basement and narrow tunnels
The side swing angle of the boom is 24 ° to the left/34 ° to the right, reducing the frequency of moving the vehicle during side excavation
Applicable working conditions include municipal renovation and expansion, deep foundation pits for building construction, large-scale earthworks, 85/90 breaking hammers, fish pond dredging, basement construction in residential areas, and rural infrastructure; Urban environmental protection construction site restrictions (National III emission)
##2、 Overall dimensions for transportation of the whole machine (unit: mm, 3.7m main arm+1.82m standard boom)
-Total length of the machine: 6080
-Transportation width of the whole machine: 2320
-Cabin transportation height: 2560; Simple shed height 2520
-Minimum ground clearance: 440
-Track total length: 2830; Track grounding length 2290
-Track gauge: 2220
-Tail turning radius: 1220mm (CR short tail core advantage)
-Maximum lifting height of bulldozer: 380mm; excavation depth: 440mm
-Ground clearance of counterweight: 780
##3、 Power system (Caterpillar C3.3 DI four cylinder turbocharged diesel engine)
1. Engine model: Cat C3.3 DI Turbo water-cooled four cylinder direct injection turbocharged common rail diesel engine
2. Rated net power: 49.7kW (67.4 horsepower)/2000rpm; Total power 52kW (70 horsepower)
3. Maximum torque: 212N · m @ 1400rpm, low speed high torque, long-term crushing without losing speed, not easily exposed to high temperature
4. Displacement: 3.3L; cylinder diameter 94mm x stroke 120mm
5. Emission standards: National III/Ter4 interim, DOC+DPF without urea, restricted construction sites under urban environmental control
6. Electrical system: 24V, dual 12V 90Ah batteries, 35A generator
7. Fuel tank capacity: 110L, no need to refuel during field construction for 8 hours a day
8. Energy saving configuration: 3-second automatic idle without operation, * * standard/strong dual power mode * *, comprehensive fuel saving of 12% in standard mode
##4、 Hydraulic system (dual variable plunger load sensing hydraulic)
1. Main pump configuration: Dual variable plunger pump, 2000rpm, total flow rate 147L/min
2. Overflow pressure of the main working circuit: 28MPa; Crushing auxiliary circuit 21MPa; Rotary circuit 24MPa
3. Original factory standard single auxiliary crushing oil circuit, compatible with 85/90 medium-sized crushing hammers, spiral drills, wood grabbing tools, and hydraulic quick change joints
4. Keep the circuit straight, the walking and digging composite actions do not interfere with each other, and the accuracy of large-scale leveling is high
5. The flow regeneration circuit for the boom and stick shortens the operating cycle and reduces fuel consumption
6. Hydraulic oil tank capacity: 54L; total oil volume of the entire hydraulic system is 102L
##5、 Standard short boom excavation performance (ISO standard, unit: mm/kN)
###1. Scope of homework
-Maximum excavation radius on the ground: 6420
-Excavation radius of shutdown face: 6280
-Maximum excavation depth: 4210
-Maximum excavation depth at 2.44m level: 3610
-Vertical maximum excavation depth: 3520
-Maximum excavation height: 7330
-Maximum unloading height: 5300
###2. Excavation power
-Bucket excavation force: 57.1kN
-Standard boom excavation force: 38.9kN; extended boom 34.5kN
###3. Walking and turning performance
-Rotation speed: 10.8rpm, simple rotation buffer, start stop impact greater than the new National IV model
-Dual speed walking (steel track): Low speed 3.2km/h/High speed 5.1km/h
-Maximum traction force of the whole machine: 72kN, not easy to slip on muddy steep slopes
-Climbing ability: 60% (30 ° steep slope)
-Ground pressure ratio (450mm steel track cab version): 36.5kPa
##6、 Full vehicle oil filling capacity
-Diesel tank: 110 L
-Hydraulic oil tank: 54 L, whole machine hydraulic oil 102 L
-Engine oil: 12.5 L
-Total capacity of cooling system: 16.2 L
-Unilateral walking motor gear oil: 1.1 L, total 2.2 L on both sides
-Rotary reducer gear oil: 1.3 L
##7、 Chassis heavy load configuration
-Single side support wheel: 5 pieces; Single side sprocket wheel: 1 piece
-Fully sealed self-lubricating track chain, resistant to sediment and wear, with a longer lifespan
-External butter type track tensioning cylinder, easy and convenient to adjust and maintain
-Integrated widened and thickened bulldozer shovel with floating leveling function, independent lifting oil cylinder
-Thickened X-shaped integral welded frame, with protective steel plate added at the bottom, which is not easily deformed after long-term crushing
##8、 Two types of cabin configurations
###1. ROPS simple sunshade (second-hand basic model)
1. Four pillar anti falling object safety shed, top escape exit, manual front and rear wipers
2. Basic shock-absorbing seats, only adjustable for front and rear height, without armrests or lumbar support
3. Mechanical pilot operation handle, supporting forward and reverse hand switching, no Carter labor-saving single handle walking mode
4. Mechanical pointer instrument, only displays speed, water temperature, and oil pressure, with no fault self diagnosis or maintenance reminder
5. Ordinary halogen work light, total hydraulic safety lock rod, no electronic anti-theft, USB charging
###2. Fully enclosed air-conditioned cab (second-hand mainstream high-end)
1. FOPS anti falling object enclosed cab, double-layer sealed sound insulation, front windshield can be flipped up to open
2. Four way adjustable thick shock-absorbing cloth seats with adjustable armrests
3. Original factory fully automatic heating and cooling air conditioning, defroster, improved comfort for high-temperature operations in summer
4. Mechanical pointer instrument, no LCD intelligent large screen, no remote monitoring function
5. Halogen work light, basic walking sound and light alarm, no Bluetooth or fast charging function