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CAT 321 VS SANY SY120C-9 Comparison
CAT 321
₹ 54 L - 55 L
VS
SANY SY120C-9
₹ 54.99 L - 59.98 L
CAT 321
₹54L
SANY SY120C-9
₹54.99L
Compare excavators helps you make an informed purchase decision.
CAT 321
From ₹ 54 Lakh
SANY SY120C-9
From ₹ 54.99 Lakh
Engine
Model
Cat® C3.6
Cummins B3.9‑100c diesel
Model
Cat® C3.6
Cummins B3.9‑100c diesel
Gross Power
100 kw
75 kw
Gross Power
100 kw
75 kw
Net Power
129 kw
75 kw
Net Power
129 kw
75 kw
Engine Power
136 HP
100 HP
Engine Power
136 HP
100 HP
Engine Displacement
3600 cc
3900 cc
Engine Displacement
3600 cc
3900 cc
Number Of Cylinders
4 Nos
4 Nos
Number Of Cylinders
4 Nos
4 Nos
Rated RPM
2000 rpm
2200 rpm
Rated RPM
2000 rpm
2200 rpm
Emission Standard
BS IV
BS IV
Emission Standard
BS IV
BS IV
Max Torque
500 Nm
385 Nm
Max Torque
500 Nm
385 Nm
Fuel Type
Diesel
Diesel
Fuel Type
Diesel
Diesel
Operating Weight
Operating Weight
19300 kg
12400 kg
Operating Weight
19300 kg
12400 kg
Machine Weight
19300 kg
12400 kg
Machine Weight
19300 kg
12400 kg
Counter Weight
3650 kg
4654 kg
Counter Weight
3650 kg
4654 kg
Ground Pressure
60 kg
41.6 kg
Ground Pressure
60 kg
41.6 kg
Hydraulic System
Main Pump Type
Electro‑hydraulic main control valve system
Variable Displacement Axial Piston Pump
Main Pump Type
Electro‑hydraulic main control valve system
Variable Displacement Axial Piston Pump
Maximum Hydraulic Flow
315 L/min
225 L/min
Maximum Hydraulic Flow
315 L/min
225 L/min
Maximum System Pressure
350 bar
314 bar
Maximum System Pressure
350 bar
314 bar
Hydraulic Oil Capacity
218 litres
150 litres
Hydraulic Oil Capacity
218 litres
150 litres
Auxiliary Hydraulic Flow
120 L/min
120 L/min
Auxiliary Hydraulic Flow
120 L/min
120 L/min
Working Range
Max Digging Depth
5970 mm
4750 mm
Max Digging Depth
5970 mm
4750 mm
Max Vertical Wall Digging Depth
5360 mm
4410 mm
Max Vertical Wall Digging Depth
5360 mm
4410 mm
Max Reach at Ground Level
9150 mm
7345 mm
Max Reach at Ground Level
9150 mm
7345 mm
Max Dumping Height
6250 mm
5165 mm
Max Dumping Height
6250 mm
5165 mm
Max Cutting Height
9120 mm
7415 mm
Max Cutting Height
9120 mm
7415 mm
Boom Length
5.700 m
4.260 m
Boom Length
5.700 m
4.260 m
Arm Length
2250 mm
1960 mm
Arm Length
2250 mm
1960 mm
Bucket Breakout Force
135 kN
82 kN
Bucket Breakout Force
135 kN
82 kN
Arm Tear-out Force
119 kN
62 kN
Arm Tear-out Force
119 kN
62 kN
Capacities
Fuel Tank Capacity
370 litres
240 litres
Fuel Tank Capacity
370 litres
240 litres
Hydraulic Tank Capacity
218 litres
250 litres
Hydraulic Tank Capacity
218 litres
250 litres
Cooling System Capacity
25 litres
6.7 litres
Cooling System Capacity
25 litres
6.7 litres
Engine Oil Capacity
11 litres
9 litres
Engine Oil Capacity
11 litres
9 litres
Swing Drive Oil Capacity
6 litres
3 litres
Swing Drive Oil Capacity
6 litres
3 litres
Final Drive Gear Oil Capacity
6 litres
2 litres
Final Drive Gear Oil Capacity
6 litres
2 litres
Under Carriage
Track Shoe Width
800 mm
500 mm
Track Shoe Width
800 mm
500 mm
Track Gauge
2380 mm
1990 mm
Track Gauge
2380 mm
1990 mm
Track Length on Ground
3650 mm
2680 mm
Track Length on Ground
3650 mm
2680 mm
Ground Clearance
450 mm
425 mm
Ground Clearance
450 mm
425 mm
Tail Swing Radius
1676 mm
2280 mm
Tail Swing Radius
1676 mm
2280 mm
Undercarriage Type
Crawler — steel tracks
Tracked / Crawler undercarriage
Undercarriage Type
Crawler — steel tracks
Tracked / Crawler undercarriage
Steering & Brakes
Overall Length
9570 mm
7280 mm
Overall Length
9570 mm
7280 mm
Overall Width
2800 mm
2510 mm
Overall Width
2800 mm
2510 mm
Overall Height
3250 mm
2700 mm
Overall Height
3250 mm
2700 mm
Cab Height
3250 mm
2740 mm
Cab Height
3250 mm
2740 mm
Boom Height
3.300 m
2.016 m
Boom Height
3.300 m
2.016 m
Track Width
600 mm
500 mm
Track Width
600 mm
500 mm
Performances
Travel Speed
10 km/h
5.5 km/h
Travel Speed
10 km/h
5.5 km/h
Swing Speed
10 rpm
12 rpm
Swing Speed
10 rpm
12 rpm
Gradeability
27 %
70 %
Gradeability
27 %
70 %
Drawbar Pull
150 kN
113 kN
Drawbar Pull
150 kN
113 kN
Bucket And Attachments
Bucket Capacity
1 Cu.m
0.65 Cu.m
Bucket Capacity
1 Cu.m
0.65 Cu.m
Bucket Options
0.8
0.55 - 0.65
Bucket Options
0.8
0.55 - 0.65
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Breaker, auger, thumb
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Breaker, auger, thumb
Cabin And Controls
Cabin AC
Yes
Yes
Cabin AC
Yes
Yes
Display Type
8 LCD Touch Screen
Basic instrument cluster
Display Type
8 LCD Touch Screen
Basic instrument cluster
Joystick Controls
Yes
Yes
Joystick Controls
Yes
Yes
Seat Type
Suspension Seat
Adjustable / suspension
Seat Type
Suspension Seat
Adjustable / suspension
Noise Level
70 dB(A)
75 dB(A)
Noise Level
70 dB(A)
75 dB(A)
Safety Features
-
-
Safety Features
-
-
Electrical System
Battery
2X12 V
12 V
Battery
2X12 V
12 V
Alternator Output
100 A
75 A
Alternator Output
100 A
75 A
Lighting Type
LED
LED
Lighting Type
LED
LED
Additional Features
Auto Idle
Yes
Yes
Auto Idle
Yes
Yes
Eco Mode
Yes
Yes
Eco Mode
Yes
Yes
Telematics
No
Yes
Telematics
No
Yes
Diagnostic System
Yes
Yes
Diagnostic System
Yes
Yes
CAT 321
Pros
- 136 HP Cat C3.6 engine delivers strong digging performance.
- An advanced electrohydraulic system improves cycle time.
- Eco Mode and Intelligent ECM help reduce fuel consumption
SANY SY120C-9
Pros
- Cummins ~100.5 hp engine delivers solid output for its class with good torque and fuel economy
- Hydraulic system tuned for responsive and smooth combined operations.
- Reinforced structural components like anti‑wear bucket plates and quality components improve service life.
