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CAT 321 VS BOBCAT E50z Comparison
CAT 321
₹ 54 L - 55 L
VS
BOBCAT E50z
₹ 36 L - 37.99 L
CAT 321
₹54L
BOBCAT E50z
₹36L
Compare excavators helps you make an informed purchase decision.
CAT 321
From ₹ 54 Lakh
BOBCAT E50z
From ₹ 36 Lakh
Engine
Model
Cat® C3.6
Kubota V2403, 4-stroke, water-cooled diesel
Model
Cat® C3.6
Kubota V2403, 4-stroke, water-cooled diesel
Gross Power
100 kw
36.5 kw
Gross Power
100 kw
36.5 kw
Net Power
129 kw
34 kw
Net Power
129 kw
34 kw
Engine Power
136 HP
48.9 HP
Engine Power
136 HP
48.9 HP
Engine Displacement
3600 cc
2400 cc
Engine Displacement
3600 cc
2400 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 III
Emission Standard
BS IV
BS III
Max Torque
500 Nm
183 Nm
Max Torque
500 Nm
183 Nm
Fuel Type
Diesel
Diesel
Fuel Type
Diesel
Diesel
Operating Weight
Operating Weight
19300 kg
4975 kg
Operating Weight
19300 kg
4975 kg
Machine Weight
19300 kg
4900 kg
Machine Weight
19300 kg
4900 kg
Counter Weight
3650 kg
900 kg
Counter Weight
3650 kg
900 kg
Ground Pressure
60 kg
33 kg
Ground Pressure
60 kg
33 kg
Hydraulic System
Main Pump Type
Electro‑hydraulic main control valve system
Load-sensing variable displacement piston pump
Main Pump Type
Electro‑hydraulic main control valve system
Load-sensing variable displacement piston pump
Maximum Hydraulic Flow
315 L/min
138 L/min
Maximum Hydraulic Flow
315 L/min
138 L/min
Maximum System Pressure
350 bar
245 bar
Maximum System Pressure
350 bar
245 bar
Hydraulic Oil Capacity
218 litres
50 litres
Hydraulic Oil Capacity
218 litres
50 litres
Auxiliary Hydraulic Flow
120 L/min
70 L/min
Auxiliary Hydraulic Flow
120 L/min
70 L/min
Working Range
Max Digging Depth
5970 mm
3553 mm
Max Digging Depth
5970 mm
3553 mm
Max Vertical Wall Digging Depth
5360 mm
3000 mm
Max Vertical Wall Digging Depth
5360 mm
3000 mm
Max Reach at Ground Level
9150 mm
5920 mm
Max Reach at Ground Level
9150 mm
5920 mm
Max Dumping Height
6250 mm
3950 mm
Max Dumping Height
6250 mm
3950 mm
Max Cutting Height
9120 mm
5600 mm
Max Cutting Height
9120 mm
5600 mm
Boom Length
5.700 m
2.850 m
Boom Length
5.700 m
2.850 m
Arm Length
2250 mm
1550 mm
Arm Length
2250 mm
1550 mm
Bucket Breakout Force
135 kN
37.7 kN
Bucket Breakout Force
135 kN
37.7 kN
Arm Tear-out Force
119 kN
22.2 kN
Arm Tear-out Force
119 kN
22.2 kN
Capacities
Fuel Tank Capacity
370 litres
89 litres
Fuel Tank Capacity
370 litres
89 litres
Hydraulic Tank Capacity
218 litres
45 litres
Hydraulic Tank Capacity
218 litres
45 litres
Cooling System Capacity
25 litres
14 litres
Cooling System Capacity
25 litres
14 litres
Engine Oil Capacity
11 litres
9 litres
Engine Oil Capacity
11 litres
9 litres
Swing Drive Oil Capacity
6 litres
2 litres
Swing Drive Oil Capacity
6 litres
2 litres
Final Drive Gear Oil Capacity
6 litres
3 litres
Final Drive Gear Oil Capacity
6 litres
3 litres
Under Carriage
Track Shoe Width
800 mm
350 mm
Track Shoe Width
800 mm
350 mm
Track Gauge
2380 mm
1600 mm
Track Gauge
2380 mm
1600 mm
Track Length on Ground
3650 mm
1,803 mm
Track Length on Ground
3650 mm
1,803 mm
Ground Clearance
450 mm
608 mm
Ground Clearance
450 mm
608 mm
Tail Swing Radius
1676 mm
2750 mm
Tail Swing Radius
1676 mm
2750 mm
Undercarriage Type
Crawler — steel tracks
Crawler undercarriage with rubber tracks, grease‑type track adjusters, and sealed rollers — conventional compact excavator undercarriage
Undercarriage Type
Crawler — steel tracks
Crawler undercarriage with rubber tracks, grease‑type track adjusters, and sealed rollers — conventional compact excavator undercarriage
Steering & Brakes
Overall Length
9570 mm
5550 mm
Overall Length
9570 mm
5550 mm
Overall Width
2800 mm
1960 mm
Overall Width
2800 mm
1960 mm
Overall Height
3250 mm
2550 mm
Overall Height
3250 mm
2550 mm
Cab Height
3250 mm
2480 mm
Cab Height
3250 mm
2480 mm
Boom Height
3.300 m
2.900 m
Boom Height
3.300 m
2.900 m
Track Width
600 mm
300 mm
Track Width
600 mm
300 mm
Performances
Travel Speed
10 km/h
4.3 km/h
Travel Speed
10 km/h
4.3 km/h
Swing Speed
10 rpm
9.5 rpm
Swing Speed
10 rpm
9.5 rpm
Gradeability
27 %
58 %
Gradeability
27 %
58 %
Drawbar Pull
150 kN
45 kN
Drawbar Pull
150 kN
45 kN
Bucket And Attachments
Bucket Capacity
1 Cu.m
0.14 Cu.m
Bucket Capacity
1 Cu.m
0.14 Cu.m
Bucket Options
0.8
0.12 – 0.14
Bucket Options
0.8
0.12 – 0.14
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Hydraulic breaker, auger, grapple, ripper, tilt bucket
Attachment Compatibility
Breaker, Auger, Grapple (with auxiliary hydraulics)
Hydraulic breaker, auger, grapple, ripper, tilt bucket
Cabin And Controls
Cabin AC
Yes
Yes
Cabin AC
Yes
Yes
Display Type
8 LCD Touch Screen
Digital LCD monitor
Display Type
8 LCD Touch Screen
Digital LCD monitor
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)
74 dB(A)
Noise Level
70 dB(A)
74 dB(A)
Safety Features
-
-
Safety Features
-
-
Electrical System
Battery
2X12 V
12 V
Battery
2X12 V
12 V
Alternator Output
100 A
60 A
Alternator Output
100 A
60 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
BOBCAT E50z
Pros
- Powerful Engine for Class: ~49 HP diesel offers strong performance for a 5-ton mini.
- Good Digging Depth & Reach: ~3.55 m dig depth and ~5.92 m reach help versatile site work.
- Compact Zero-Tail Design: Excellent maneuverability in tight spaces and urban sites.
