Compare Excavators. Choose Smarter.
CAT 321 VS CAT 330 GC Comparison
CAT 321
₹ 54 L - 55 L
VS
CAT 330 GC
₹ 35 L - 48 L
CAT 321
₹54L
CAT 330 GC
₹35L
Compare excavators helps you make an informed purchase decision.
CAT 321
From ₹ 54 Lakh
CAT 330 GC
From ₹ 35 Lakh
Engine
Model
Cat® C3.6
Cat® C7.1
Model
Cat® C3.6
Cat® C7.1
Gross Power
100 kw
151 kw
Gross Power
100 kw
151 kw
Net Power
129 kw
158 kw
Net Power
129 kw
158 kw
Engine Power
136 HP
213 HP
Engine Power
136 HP
213 HP
Engine Displacement
3600 cc
7010 cc
Engine Displacement
3600 cc
7010 cc
Number Of Cylinders
4 Nos
6 Nos
Number Of Cylinders
4 Nos
6 Nos
Rated RPM
2000 rpm
2200 rpm
Rated RPM
2000 rpm
2200 rpm
Emission Standard
BS IV
stage V
Emission Standard
BS IV
stage V
Max Torque
500 Nm
800 Nm
Max Torque
500 Nm
800 Nm
Fuel Type
Diesel
Diesel
Fuel Type
Diesel
Diesel
Operating Weight
Operating Weight
19300 kg
28900 kg
Operating Weight
19300 kg
28900 kg
Machine Weight
19300 kg
30 900 kg
Machine Weight
19300 kg
30 900 kg
Counter Weight
3650 kg
6700 kg
Counter Weight
3650 kg
6700 kg
Ground Pressure
60 kg
45 kg
Ground Pressure
60 kg
45 kg
Hydraulic System
Main Pump Type
Electro‑hydraulic main control valve system
variable in axial position
Main Pump Type
Electro‑hydraulic main control valve system
variable in axial position
Maximum Hydraulic Flow
315 L/min
560 L/min
Maximum Hydraulic Flow
315 L/min
560 L/min
Maximum System Pressure
350 bar
350 bar
Maximum System Pressure
350 bar
350 bar
Hydraulic Oil Capacity
218 litres
310 litres
Hydraulic Oil Capacity
218 litres
310 litres
Auxiliary Hydraulic Flow
120 L/min
180 L/min
Auxiliary Hydraulic Flow
120 L/min
180 L/min
Working Range
Max Digging Depth
5970 mm
7260 mm
Max Digging Depth
5970 mm
7260 mm
Max Vertical Wall Digging Depth
5360 mm
6030 mm
Max Vertical Wall Digging Depth
5360 mm
6030 mm
Max Reach at Ground Level
9150 mm
10690 mm
Max Reach at Ground Level
9150 mm
10690 mm
Max Dumping Height
6250 mm
6940 mm
Max Dumping Height
6250 mm
6940 mm
Max Cutting Height
9120 mm
10020 mm
Max Cutting Height
9120 mm
10020 mm
Boom Length
5.700 m
6.150 m
Boom Length
5.700 m
6.150 m
Arm Length
2250 mm
3200 mm
Arm Length
2250 mm
3200 mm
Bucket Breakout Force
135 kN
179 kN
Bucket Breakout Force
135 kN
179 kN
Arm Tear-out Force
119 kN
126 kN
Arm Tear-out Force
119 kN
126 kN
Capacities
Fuel Tank Capacity
370 litres
474 litres
Fuel Tank Capacity
370 litres
474 litres
Hydraulic Tank Capacity
218 litres
147 litres
Hydraulic Tank Capacity
218 litres
147 litres
Cooling System Capacity
25 litres
25 litres
Cooling System Capacity
25 litres
25 litres
Engine Oil Capacity
11 litres
25 litres
Engine Oil Capacity
11 litres
25 litres
Swing Drive Oil Capacity
6 litres
10 litres
Swing Drive Oil Capacity
6 litres
10 litres
Final Drive Gear Oil Capacity
6 litres
5 litres
Final Drive Gear Oil Capacity
6 litres
5 litres
Under Carriage
Track Shoe Width
800 mm
600 mm
Track Shoe Width
800 mm
600 mm
Track Gauge
2380 mm
2390 mm
Track Gauge
2380 mm
2390 mm
Track Length on Ground
3650 mm
3990 mm
Track Length on Ground
3650 mm
3990 mm
Ground Clearance
450 mm
490 mm
Ground Clearance
450 mm
490 mm
Tail Swing Radius
1676 mm
3130 mm
Tail Swing Radius
1676 mm
3130 mm
Undercarriage Type
Crawler — steel tracks
Tracked undercarriage with steel track shoes and grease‑tensioned adjustment – typical crawler system for medium excavators; Cat offers several undercarriage and shoe size options for jobsite needs.
Undercarriage Type
Crawler — steel tracks
Tracked undercarriage with steel track shoes and grease‑tensioned adjustment – typical crawler system for medium excavators; Cat offers several undercarriage and shoe size options for jobsite needs.
Steering & Brakes
Overall Length
9570 mm
10 420 mm
Overall Length
9570 mm
10 420 mm
Overall Width
2800 mm
3190 mm
Overall Width
2800 mm
3190 mm
Overall Height
3250 mm
3050 mm
Overall Height
3250 mm
3050 mm
Cab Height
3250 mm
3050 mm
Cab Height
3250 mm
3050 mm
Boom Height
3.300 m
3.050 m
Boom Height
3.300 m
3.050 m
Track Width
600 mm
800 mm
Track Width
600 mm
800 mm
Performances
Travel Speed
10 km/h
5.3 km/h
Travel Speed
10 km/h
5.3 km/h
Swing Speed
10 rpm
11 rpm
Swing Speed
10 rpm
11 rpm
Gradeability
27 %
70 %
Gradeability
27 %
70 %
Drawbar Pull
150 kN
247 kN
Drawbar Pull
150 kN
247 kN
Bucket And Attachments
Bucket Capacity
1 Cu.m
1.6 Cu.m
Bucket Capacity
1 Cu.m
1.6 Cu.m
Bucket Options
0.8
Standard / HD / Extra HD buckets
Bucket Options
0.8
Standard / HD / Extra HD buckets
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Hammer, Ripper, etc. (optional)
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Hammer, Ripper, etc. (optional)
Cabin And Controls
Cabin AC
Yes
Yes
Cabin AC
Yes
Yes
Display Type
8 LCD Touch Screen
Touchscreen / monitor available
Display Type
8 LCD Touch Screen
Touchscreen / monitor available
Joystick Controls
Yes
Yes
Joystick Controls
Yes
Yes
Seat Type
Suspension Seat
Adjustable suspension seat
Seat Type
Suspension Seat
Adjustable suspension seat
Noise Level
70 dB(A)
103 dB(A)
Noise Level
70 dB(A)
103 dB(A)
Safety Features
-
-
Safety Features
-
-
Electrical System
Battery
2X12 V
24 V
Battery
2X12 V
24 V
Alternator Output
100 A
80 A
Alternator Output
100 A
80 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
CAT 330 GC
Pros
- Lower Operating & Maintenance Costs
- Fuel Efficiency & Emissions
- Operator Comfort & Safety
