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HYUNDAI Robex 35 Z-9 VS LiuGong 921 Di Comparison
HYUNDAI Robex 35 Z-9
₹ 31 L - 33 L
VS
LiuGong 921 Di
₹ 54 L - 56 L
HYUNDAI Robex 35 Z-9
₹31L
LiuGong 921 Di
₹54L
Compare excavators helps you make an informed purchase decision.
HYUNDAI Robex 35 Z-9
From ₹ 31 Lakh
LiuGong 921 Di
From ₹ 54 Lakh
Engine
Model
Yanmar 3TNV88
Cummins 6BT5.9‑C140
Model
Yanmar 3TNV88
Cummins 6BT5.9‑C140
Gross Power
20 kw
170 kw
Gross Power
20 kw
170 kw
Net Power
19 kw
170 kw
Net Power
19 kw
170 kw
Engine Power
27 HP
140 HP
Engine Power
27 HP
140 HP
Engine Displacement
1,642 cc
5900 cc
Engine Displacement
1,642 cc
5900 cc
Number Of Cylinders
3 Nos
6 Nos
Number Of Cylinders
3 Nos
6 Nos
Rated RPM
2200 rpm
2000 rpm
Rated RPM
2200 rpm
2000 rpm
Emission Standard
Low-emission diesel
BS III
Emission Standard
Low-emission diesel
BS III
Max Torque
1100 Nm
614 Nm
Max Torque
1100 Nm
614 Nm
Fuel Type
Diesel
Diesel
Fuel Type
Diesel
Diesel
Operating Weight
Operating Weight
3750 kg
21000 kg
Operating Weight
3750 kg
21000 kg
Machine Weight
3,750 kg
21000 kg
Machine Weight
3,750 kg
21000 kg
Counter Weight
4200 kg
5341 kg
Counter Weight
4200 kg
5341 kg
Ground Pressure
33.4 kg
45 kg
Ground Pressure
33.4 kg
45 kg
Hydraulic System
Main Pump Type
Two variable displacement piston pumps + gear pump
Variable displacement piston pumps
Main Pump Type
Two variable displacement piston pumps + gear pump
Variable displacement piston pumps
Maximum Hydraulic Flow
2 × 38.5 L/min
210 L/min
Maximum Hydraulic Flow
2 × 38.5 L/min
210 L/min
Maximum System Pressure
230 bar
343 bar
Maximum System Pressure
230 bar
343 bar
Hydraulic Oil Capacity
46 litres
330 litres
Hydraulic Oil Capacity
46 litres
330 litres
Auxiliary Hydraulic Flow
180 L/min
230 L/min
Auxiliary Hydraulic Flow
180 L/min
230 L/min
Working Range
Max Digging Depth
3150 mm
5875 mm
Max Digging Depth
3150 mm
5875 mm
Max Vertical Wall Digging Depth
6200 mm
4578 mm
Max Vertical Wall Digging Depth
6200 mm
4578 mm
Max Reach at Ground Level
5,240 mm
9256 mm
Max Reach at Ground Level
5,240 mm
9256 mm
Max Dumping Height
7000 mm
6798 mm
Max Dumping Height
7000 mm
6798 mm
Max Cutting Height
9000 mm
5661 mm
Max Cutting Height
9000 mm
5661 mm
Boom Length
2.500 m
5.412 m
Boom Length
2.500 m
5.412 m
Arm Length
1600 mm
2800 mm
Arm Length
1600 mm
2800 mm
Bucket Breakout Force
31 kN
159 kN
Bucket Breakout Force
31 kN
159 kN
Arm Tear-out Force
19 kN
113 kN
Arm Tear-out Force
19 kN
113 kN
Capacities
Fuel Tank Capacity
42 litres
412 litres
Fuel Tank Capacity
42 litres
412 litres
Hydraulic Tank Capacity
46 litres
230 litres
Hydraulic Tank Capacity
46 litres
230 litres
Cooling System Capacity
6.7 litres
30 litres
Cooling System Capacity
6.7 litres
30 litres
Engine Oil Capacity
6.7 litres
25 litres
Engine Oil Capacity
6.7 litres
25 litres
Swing Drive Oil Capacity
7 litres
7 litres
Swing Drive Oil Capacity
7 litres
7 litres
Final Drive Gear Oil Capacity
6 litres
5 litres
Final Drive Gear Oil Capacity
6 litres
5 litres
Under Carriage
Track Shoe Width
300 mm
600 mm
Track Shoe Width
300 mm
600 mm
Track Gauge
1440 mm
2200 mm
Track Gauge
1440 mm
2200 mm
Track Length on Ground
2130 mm
4170 mm
Track Length on Ground
2130 mm
4170 mm
Ground Clearance
304 mm
440 mm
Ground Clearance
304 mm
440 mm
Tail Swing Radius
870 mm
2860 mm
Tail Swing Radius
870 mm
2860 mm
Undercarriage Type
X-leg center frame with pentagonal box-section track frame
Tracked/Crawler undercarriage
Undercarriage Type
X-leg center frame with pentagonal box-section track frame
Tracked/Crawler undercarriage
Steering & Brakes
Overall Length
4,790 mm
9712 mm
Overall Length
4,790 mm
9712 mm
Overall Width
1740 mm
2800 mm
Overall Width
1740 mm
2800 mm
Overall Height
2500 mm
3050 mm
Overall Height
2500 mm
3050 mm
Cab Height
870 mm
5431 mm
Cab Height
870 mm
5431 mm
Boom Height
3.500 m
3.500 m
Boom Height
3.500 m
3.500 m
Track Width
300 mm
600 mm
Track Width
300 mm
600 mm
Performances
Travel Speed
2.5 km/h
5.3 km/h
Travel Speed
2.5 km/h
5.3 km/h
Swing Speed
9.5 rpm
12 rpm
Swing Speed
9.5 rpm
12 rpm
Gradeability
30 %
70 %
Gradeability
30 %
70 %
Drawbar Pull
31 kN
210 kN
Drawbar Pull
31 kN
210 kN
Bucket And Attachments
Bucket Capacity
0.11 Cu.m
0.95 Cu.m
Bucket Capacity
0.11 Cu.m
0.95 Cu.m
Bucket Options
Standard small buckets for mini excavators
0.85 - 0.95
Bucket Options
Standard small buckets for mini excavators
0.85 - 0.95
Attachment Compatibility
Auxiliary piping optional for breakers, augers, etc.
Breaker/grapple/powertilt
Attachment Compatibility
Auxiliary piping optional for breakers, augers, etc.
Breaker/grapple/powertilt
Cabin And Controls
Cabin AC
Yes
Yes
Cabin AC
Yes
Yes
Display Type
Basic monitor (varies by region)
Digital/analog combo (basic)
Display Type
Basic monitor (varies by region)
Digital/analog combo (basic)
Joystick Controls
Yes
Yes
Joystick Controls
Yes
Yes
Seat Type
Adjustable operator seat
Operator seat with suspension
Seat Type
Adjustable operator seat
Operator seat with suspension
Noise Level
94 dB(A)
76 dB(A)
Noise Level
94 dB(A)
76 dB(A)
Safety Features
-
-
Safety Features
-
-
Electrical System
Battery
12 V
24 V
Battery
12 V
24 V
Alternator Output
55 A
80 A
Alternator Output
55 A
80 A
Lighting Type
LED
LED
Lighting Type
LED
LED
Additional Features
Auto Idle
Yes
Yes
Auto Idle
Yes
Yes
Eco Mode
Yes
No
Eco Mode
Yes
No
Telematics
Yes
Yes
Telematics
Yes
Yes
Diagnostic System
Yes
Yes
Diagnostic System
Yes
Yes
HYUNDAI Robex 35 Z-9
Pros
- Excellent in Confined & Urban Sites
- Fuel‑Efficient & Cost‑Effective
- Comfortable & Operator‑Friendly
LiuGong 921 Di
Pros
- Offers respectable digging depth (~5.9 m) and horizontal reach (~9.2 m), making it suitable for medium‑sized construction and earthmoving tasks like trenching, foundation work, and site prep.
- The boom and reach balance enables both digging and loading without needing heavy long‑reach modifications.
- Compared with heavier or lighter models, the 921Di’s boom reach fits well in the 20‑22 t excavator segment
