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CAT 320D VS Sona RDT-17 Comparison
CAT 320D
₹ 22 L - 23.99 L
VS
Sona RDT-17
₹ 14 L - 16 L
CAT 320D
₹22L
Sona RDT-17
₹14L
Compare excavators helps you make an informed purchase decision.
CAT 320D
From ₹ 22 Lakh
Sona RDT-17
From ₹ 14 Lakh
Engine
Model
CAT 3066TA
YANMAR 3‑TVN‑70
Model
CAT 3066TA
YANMAR 3‑TVN‑70
Gross Power
112.8 kw
10 kw
Gross Power
112.8 kw
10 kw
Net Power
104 kw
10 kw
Net Power
104 kw
10 kw
Engine Power
140 HP
13 HP
Engine Power
140 HP
13 HP
Engine Displacement
6370 cc
850 cc
Engine Displacement
6370 cc
850 cc
Number Of Cylinders
6 Nos
3 Nos
Number Of Cylinders
6 Nos
3 Nos
Rated RPM
1800 rpm
2200 rpm
Rated RPM
1800 rpm
2200 rpm
Emission Standard
BS IV
BS III
Emission Standard
BS IV
BS III
Max Torque
650 Nm
45 Nm
Max Torque
650 Nm
45 Nm
Fuel Type
Diesel
Diesel
Fuel Type
Diesel
Diesel
Operating Weight
Operating Weight
20330 kg
1700 kg
Operating Weight
20330 kg
1700 kg
Machine Weight
20300 kg
1700 kg
Machine Weight
20300 kg
1700 kg
Counter Weight
4200 kg
120 kg
Counter Weight
4200 kg
120 kg
Ground Pressure
55 kg
28 kg
Ground Pressure
55 kg
28 kg
Hydraulic System
Main Pump Type
Variable displacement axial piston
Gear/axial piston pump
Main Pump Type
Variable displacement axial piston
Gear/axial piston pump
Maximum Hydraulic Flow
205 L/min
40 L/min
Maximum Hydraulic Flow
205 L/min
40 L/min
Maximum System Pressure
350 bar
210 bar
Maximum System Pressure
350 bar
210 bar
Hydraulic Oil Capacity
260 litres
20 litres
Hydraulic Oil Capacity
260 litres
20 litres
Auxiliary Hydraulic Flow
60 L/min
30 L/min
Auxiliary Hydraulic Flow
60 L/min
30 L/min
Working Range
Max Digging Depth
6720 mm
1800 mm
Max Digging Depth
6720 mm
1800 mm
Max Vertical Wall Digging Depth
6980 mm
1320 mm
Max Vertical Wall Digging Depth
6980 mm
1320 mm
Max Reach at Ground Level
10790 mm
2300 mm
Max Reach at Ground Level
10790 mm
2300 mm
Max Dumping Height
6940 mm
2700 mm
Max Dumping Height
6940 mm
2700 mm
Max Cutting Height
9960 mm
2700 mm
Max Cutting Height
9960 mm
2700 mm
Boom Length
5.700 m
1.700 m
Boom Length
5.700 m
1.700 m
Arm Length
2.5 mm
850 mm
Arm Length
2.5 mm
850 mm
Bucket Breakout Force
135 kN
12 kN
Bucket Breakout Force
135 kN
12 kN
Arm Tear-out Force
118 kN
8 kN
Arm Tear-out Force
118 kN
8 kN
Capacities
Fuel Tank Capacity
410 litres
18 litres
Fuel Tank Capacity
410 litres
18 litres
Hydraulic Tank Capacity
120 litres
30 litres
Hydraulic Tank Capacity
120 litres
30 litres
Cooling System Capacity
25 litres
5 litres
Cooling System Capacity
25 litres
5 litres
Engine Oil Capacity
30 litres
4 litres
Engine Oil Capacity
30 litres
4 litres
Swing Drive Oil Capacity
8 litres
1 litres
Swing Drive Oil Capacity
8 litres
1 litres
Final Drive Gear Oil Capacity
6 litres
1 litres
Final Drive Gear Oil Capacity
6 litres
1 litres
Under Carriage
Track Shoe Width
600 mm
180 mm
Track Shoe Width
600 mm
180 mm
Track Gauge
2200 mm
1000 mm
Track Gauge
2200 mm
1000 mm
Track Length on Ground
3265 mm
1250 mm
Track Length on Ground
3265 mm
1250 mm
Ground Clearance
450 mm
400 mm
Ground Clearance
450 mm
400 mm
Tail Swing Radius
2750 mm
1200 mm
Tail Swing Radius
2750 mm
1200 mm
Undercarriage Type
Crawler – Steel Tracks
Tracked crawler undercarriage (steel track shoes)
Undercarriage Type
Crawler – Steel Tracks
Tracked crawler undercarriage (steel track shoes)
Steering & Brakes
Overall Length
9450 mm
2550 mm
Overall Length
9450 mm
2550 mm
Overall Width
2800 mm
1100 mm
Overall Width
2800 mm
1100 mm
Overall Height
3050 mm
2200 mm
Overall Height
3050 mm
2200 mm
Cab Height
2950 mm
2000 mm
Cab Height
2950 mm
2000 mm
Boom Height
3.050 m
1.500 m
Boom Height
3.050 m
1.500 m
Track Width
600 mm
180 mm
Track Width
600 mm
180 mm
Performances
Travel Speed
5.6 km/h
4 km/h
Travel Speed
5.6 km/h
4 km/h
Swing Speed
10.5 rpm
10 rpm
Swing Speed
10.5 rpm
10 rpm
Gradeability
30 %
35 %
Gradeability
30 %
35 %
Drawbar Pull
205 kN
10 kN
Drawbar Pull
205 kN
10 kN
Bucket And Attachments
Bucket Capacity
1 Cu.m
0.03 Cu.m
Bucket Capacity
1 Cu.m
0.03 Cu.m
Bucket Options
0.57–1.56
0.03 - 0.04
Bucket Options
0.57–1.56
0.03 - 0.04
Attachment Compatibility
Standard Cat thumb, breaker, auger, tilt‑rotator kits
Auger, breaker
Attachment Compatibility
Standard Cat thumb, breaker, auger, tilt‑rotator kits
Auger, breaker
Cabin And Controls
Cabin AC
Yes
No
Cabin AC
Yes
No
Display Type
LCD monitor on newer versions
Analog / Basic
Display Type
LCD monitor on newer versions
Analog / Basic
Joystick Controls
Yes
Yes
Joystick Controls
Yes
Yes
Seat Type
Air suspension available
Mechanical / Vinyl
Seat Type
Air suspension available
Mechanical / Vinyl
Noise Level
75 dB(A)
90 dB(A)
Noise Level
75 dB(A)
90 dB(A)
Safety Features
-
-
Safety Features
-
-
Electrical System
Battery
24 V
12 V
Battery
24 V
12 V
Alternator Output
70 A
45 A
Alternator Output
70 A
45 A
Lighting Type
Halogen
Halogen
Lighting Type
Halogen
Halogen
Additional Features
Auto Idle
Yes
No
Auto Idle
Yes
No
Eco Mode
Yes
No
Eco Mode
Yes
No
Telematics
Yes
No
Telematics
Yes
No
Diagnostic System
Yes
Yes
Diagnostic System
Yes
Yes
CAT 320D
Pros
- Proven Cat C6.4 ACERT engine with solid torque and power for mid‑size excavator tasks (earthmoving, trenching, loading).
- 5.7 m boom and ~9+ m digging height help in both shallow and medium depth work.
- Caterpillar’s dealer network is extensive — spare parts availability is usually strong globally.
Sona RDT-17
Pros
- At ~1.7 t operating weight, easy to transport and use in tight areas.
- Reliable engine brand commonly used in mini excavators.
- 1.8 m digging depth and ~2.7 m height are reasonable for 1.7 t machines
