The Liebherr lr 621 B M bulldozer (1986-1996) stands out for low engine power at 109 hp (81 kW), while low weight comes in at 30,975 lb (14.1 t). Its published reverse travel speed is 6.21 mph (10 km/h).
Specification profile
1986-1996
Weight: 30,975 lb (14.1 t)Engine power: 109 hp (81 kW)Reverse Travel Speed: 6.21 mph (10 km/h)Travel speed: 6.21 mph (10 km/h)
30,975 lb (14.1 t)Weight
109 hp (81 kW)Engine power
6.21 mph (10 km/h)Reverse Travel Speed
6.21 mph (10 km/h)Travel speed
2,200 rpmEngine speed at max torque
8.53 ft (2.6 m)Transport width
8.53 ft (2.6 m)Front Blade Width
26 in (660 mm)Track Width
How it compares
Low, average or high?
Engine power
Low
109 hp (81 kW)
Low 61.7 hp (46 kW)Typical 222 hp (165 kW)High 758 hp (565 kW)
Engine power is well below the typical figure.
Weight
Low
30,975 lb (14.1 t)
Low 10,097 lb (4.58 t)Typical 52,108 lb (23.6 t)High 165,347 lb (75 t)
Weight is well below the typical figure.
Reverse Travel Speed
Below average
6.21 mph (10 km/h)
Low 5.28 mph (8.5 km/h)Typical 7.31 mph (11.8 km/h)High 9.26 mph (14.9 km/h)
Reverse Travel Speed is below the typical figure.
Travel speed
Average
6.21 mph (10 km/h)
Low 4.04 mph (6.5 km/h)Typical 6.47 mph (10.4 km/h)High 8.7 mph (14 km/h)
Travel speed is close to the typical figure.
Transport width
Below average
8.53 ft (2.6 m)
Low 5.87 ft (1.79 m)Typical 9.9 ft (3.02 m)High 15.4 ft (4.69 m)
Transport width is below the typical figure.
Transport height
Average
10.2 ft (3.12 m)
Low 7.19 ft (2.19 m)Typical 10.8 ft (3.3 m)High 15.1 ft (4.59 m)
Transport height is close to the typical figure.
Visual overview
Key measurements
Overall size
The main published dimensions shown together at a glance.
Equipment
Features & equipment
Published equipment and feature availability for this model.
Air conditioningNO
Diesel particulate filterNO
Rear RipperNO
Tilt DeviceNO
Overview
Model information
| Manufacturer | Liebherr |
|---|---|
| Model | lr 621 B M bulldozer |
| Model year / production | 1986-1996 |
Full specifications
Technical details
Performance
Engine power109 hp (81 kW)
Reverse Travel Speed6.21 mph (10 km/h)
Engine speed at max torque2,200 rpm
Travel speed6.21 mph (10 km/h)
Dimensions
Front Blade Width8.53 ft (2.6 m)
Track Width26 in (660 mm)
Transport height10.2 ft (3.12 m)
Transport length18 ft (5.5 m)
Transport width8.53 ft (2.6 m)
Capacity & weight
Weight30,975 lb (14.1 t)
Engine & drivetrain
Displacement1.5 US gal (5.68 L)
Engine manufacturerMercedes
Engine typeOM352A
Number of cylinders6.0
Features
Air conditioningNo
Diesel particulate filterNo
Other specifications
Rear RipperNo
Tilt DeviceNo
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