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Edition 47 7-15
Hydraulic
Excavators
Specifications
7
MODEL
311F L RR
312D2
312D2 GC
Region Offerings
North America, Europe,
Australia, New Zealand and
Polynesia, Japan
Asia Pacific
China
Engine Power:
ISO 9249
52 kW
70 hp
67 kW
90 hp
56 kW
75 hp
SAE J1349
52 kW
70 hp
67 kW
90 hp
56 kW
75 hp
OperatingWeight*
12 400-
13 900 kg
27,300-
30,600 lb
12 900-
13 600 kg
28,440-
29,980 lb
12 500 kg
27,560 lb
Bucket Capacity Range (heaped)
0.20-0.76 m
3
0.27-1.0 yd
3
0.31-0.76 m
3
0.4-1.0 yd
3
0.53 m
3
0.69 yd
3
Engine Model
C3.4B
3054C
3054C
Emission Standards
Tier 4 Final/Stage IIIB/
Japan 2014 (Tier 4 Final)
Tier 2/Stage II Equivalent
China Nonroad Stage II
Equivalent
Rated Engine RPM
1800
1800
1800
No. of Cylinders
4
4
4
Bore
99 mm
3.90"
105 mm
4.13"
105 mm
4.13"
Stroke
110 mm
4.33"
127 mm
5.00"
127 mm
5.00"
Displacement
3.4 L
207 in
3
4.4 L
269 in
3
4.4 L
269 in
3
Max. Implement Hydraulic Pump
Output at Rated RPM
2 × 125 L/min
2 × 33 gpm
2 × 127 L/min
2 × 34 gpm
2 × 127 L/min
2 × 34 gpm
Relief Valve Settings:
Implement Circuits
30 500 kPa
4424 psi
30 500 kPa
4424 psi
30 500 kPa
4424 psi
Travel Circuits
35 000 kPa
5076 psi
35 000 kPa
5080 psi
35 000 kPa
5076 psi
Swing Circuits
23 000 kPa
3336 psi
23 000 kPa
3340 psi
23 000 kPa
3336 psi
Pilot Circuits
4120 kPa
598 psi
4100 kPa
600 psi
4120 kPa
598 psi
Maximum Drawbar Pull
114.3 kN
25,696 lb
114 kN
25,630 lbf
114 kN
25,628 lbf
Two Speed Travel
Two Speed Travel
Two Speed Travel
MaximumTravel Speed at Rated RPM Lo: 3.6 km/h
2.2 mph
Lo: 3.8 km/h
2.4 mph
Lo: 3.5 km/h
2.2 mph
Hi: 5.4 km/h
3.4 mph
Hi: 5.6 km/h
3.5 mph
Hi: 5.1 km/h
3.2 mph
Width of Standard Track Shoe
500 mm
1'8"
500 mm
1'8"
500 mm
20"
Overall Track Length
3490 mm
11'5"
3490 mm
11'5"
3490 mm
11'5"
Ground Contact Area with Std. Shoe
3.03 m
2
4700 in
2
3.03 m
2
4700 in
2
3.03 m
2
4700 in
2
Track Gauge
1990 mm
6'6"
1990 mm
6'6"
1990 mm
6'6"
Fuel Tank Refill Capacity
210 L
55.5 U.S. gal
250 L
66 U.S. gal
250 L
66 U.S. gal
Hydraulic System (includes tank)
160 L
42.3 U.S. gal
104 L
27.5 U.S. gal
150 L
39.6 U.S. gal
*Operating weight includes coolant, lubricants, full fuel tank, cab, standard shoes, bucket, medium stick, and operator 75 kg
(165 lb)
.
NOTE:
Certain models may not be available in all Sales areas.
Specifications also vary by Sales area.
Contact your Cat dealer for details.