Knuckle Boom
PK 21.501 SLD 1
Knuckle Boom Crane
Key Specs
Imperial
Metric
- Max Lifting Moment
- 20.9 mt 151,290 ft_lbs
- Max Lifting Capacity
- 6,200 kg 13,700 lb
- Max Hydraulic Outreach
- 14.9 m 48' 11''
The SLD range combines trusted technology with durable design to deliver robust, value-driven performance. The advanced PK 21.501 PK delivers outstanding efficiency and precise control. Single Link Plus boosts enhances lifting power and movement geometry, ideal for tricky loads in construction and water management projects.
Technical Specifications
Technical data U.S. Units
- Max. lifting moment
- 151,290 ft_lbs
- Max. lifting capacity
- 13,700 lb
- Max. hydraulic outreach
- 48' 11''
- Max. manual outreach
- 62' 4"
- Slewing angle
- 400°
- Slewing torque
- 16,960 ft_lbs
- Stabilizer spread (std)
- 16' 5''
- Width folded
- 8' 2''
- Max. operating pressure
- 4,785 psi
- Pump capacity
- 11.9 - 15.9 gpm
- Dead weight (std)
- 4,960 lbs
Cranes shown in the leaflet are partially optional equipped and do not always correspond to the standard version.
Country-specific regulations must be observed. Dimensions may vary. Subject to technical changes, errors and translation mistakes.
Technical Data Metric
- Max. lifting moment
- 20.9 mt
- Max. lifting capacity
- 6,200 kg
- Max. hydraulic outreach
- 14.9 m
- Max. manual outreach
- 19.1 m
- Slewing angle
- 400°
- Slewing torque
- 2.3 mt
- Stabilizer spread (std)
- 5.0 m
- Fitting space required (std)
- 0.91 m
- Width folded
- 2.5 m
- Max. operating pressure
- 330 bar
- Pump capacity
- 45 - 60 l/min
- Dead weight (std)
- 2,260 kg
Cranes shown in the leaflet are partially optional equipped and do not always correspond to the standard version.
Country-specific regulations must be observed. Dimensions may vary. Subject to technical changes, errors and translation mistakes.
Lifting Capacities U.S. Units
|
Crane Weight (lbs) |
Lifting moment (ft_lbs) |
Pressure (psi) |
Crane Height (inch) |
Crane Width (inch) |
Installation Width (inch) |
Outreach |
Pump capacity (gpm) |
Slewing angle (°) |
Slewing torque (ft_lbs) |
|
|---|---|---|---|---|---|---|---|---|---|---|
| A | 4,960.4 lbs | 148,317.5 ft_lbs | 4,785 psi | 90.9 inch | 98.4 inch | 35.6 inch | 26'11" | 11.9-15.9 | 400 | 16960.0 |
| B | 5,313.1 lbs | 144,700 ft_lbs | 4,785 psi | 90.9 inch | 98.4 inch | 35.6 inch | 34'1" | 11.9-15.9 | 400 | 16960.0 |
| C | 5,599.7 lbs | 141,806 ft_lbs | 4,785 psi | 90.9 inch | 98.4 inch | 38.4 inch | 41'4" | 11.9-15.9 | 400 | 16960.0 |
| D | 5,820.2 lbs | 139,635.5 ft_lbs | 4,785 psi | 90.9 inch | 98.4 inch | 38.4 inch | 48'11" | 11.9-15.9 | 400 | 16960.0 |
Cranes shown in the leaflet are partially optional equipped and do not always correspond to the standard version.
Country-specific regulations must be observed. Dimensions may vary. Subject to technical changes, errors and translation mistakes.
Lifting Capacities Metric
|
Crane Height (mm) |
Crane Weight (kg) |
Crane Width (mm) |
Installation Width (mm) |
Lifting moment (mt) |
Outreach (m) |
Pressure (MPa) |
Pump capacity (l/min) |
Slewing angle (°) |
Slewing torque (mt) |
|
|---|---|---|---|---|---|---|---|---|---|---|
| A | 2,310 mm | 2,250 kg | 2,500 mm | 905 mm | 20.5 mt | 8.2 m | 33 Mpa | 45-60 | 400 | 2.3 |
| B | 2,310 mm | 2,410 kg | 2,500 mm | 905 mm | 20 mt | 10 m | 33 Mpa | 45-60 | 400 | 2.3 |
| C | 2,310 mm | 2,540 kg | 2,500 mm | 975 mm | 19.6 mt | 12.6 m | 33 Mpa | 65-90 | 400 | 2.3 |
| D | 2,310 mm | 2,640 kg | 2,500 mm | 975 mm | 19.3 mt | 14.9 m | 33 Mpa | 45-60 | 400 | 2.3 |
Cranes shown in the leaflet are partially optional equipped and do not always correspond to the standard version.
Country-specific regulations must be observed. Dimensions may vary. Subject to technical changes, errors and translation mistakes.
SINGLE LINK PLUS – Extended Reach
Single Link Plus reverse linkage system allowis the knuckle boom to tilt upward by up to 15° beyond the horizontal line. This expanded movement range simplifies work in tight spaces, through windows or doorways, and around obstacles. It also enables compact folding on the truck bed while improving precision, control, and efficiency during complex lifting tasks.
Optional Features
Radio Remote Control – Full Control
Radio remote control system operates the crane safely and efficiently from a distance. Operator commands are transmitted wirelessly delivering precise hydraulic movements. This enables clear visibility of the load, one-person operation, and allows work outside danger zones. Adjustable controls, speed settings, and built-in safety shutoffs improve comfort, accuracy, and overall job site safety.