Marine Instruments User Manual

4'7"
(1.40m)
3'9"
(1.14m)
2'10"
(0.87m)
22'10"
(6.95m)
17'10"
(5.45m)
12'11"
(3.93m)
10.69”
(0.27m)
18.41”
(0.47m)
11’0”
(3.34m)
16’0”
(4.87m)
21’0”
(6.39m)
Specifications 
Chapter 1 - Specifications
Crane Rating: 29,500 ft-lb (4.1 ton-m)*
Standard Boom Length: 11’ 0” (3.35 m) from CL of Crane
Boom Extension: 1st stage: Hydraulic 60” (152.4 cm)
2nd stage: Manual 60” (152.4 cm)
Optional: 2nd stage: Hydraulic 60” (152.4 cm)
Maximum Horizontal Reach: 21’ 0” (6.39 m) from CL of Crane
Maximum Vertical Lift: 22’ 10” (6.95 m)
(from crane base)
Boom Elevation: -5 to +80 degrees
Stowed Height: 32” (81.3 cm)
(crane only)
Mounting Space Required: 20” x 21” (50.8 x 53.3 cm)
Approximate Crane Weight: 1400 lbs (635 kg)
Controls: Radio control standard for all
functions.
Winch Specifications
Rope Diameter: 5/16" (8 mm)
Line pull speed: 70 ft/min (21.34 m/min)
20 ft/min (6.09 m/min) - Electric Version
Max. single part line: 2500 lbs (1130 kg)
Max. double part line: 5000 lbs (2265 kg)
Rotation: 400 degree power
(worm gear)
Lifting Capacities: 5000 lbs @ 5’10” (2265 kg @ 1.78 m)**
1400 lbs @ 21’ (635 kg @ 6.40 m)**
Power Supply Required: PTO & Pump
(8.0 gpm @ 2500 psi)
(30.31 lpm @ 173 bar)
12 volt power unit
(2.0 gpm @ 2500 psi)
(7.57 lpm @ 172 bar)
*Crane rating in Boost Mode. Normal crane rating is 25,000 ft-lbs (3.46 ton-m)
**Maximum capacities in Boost Mode.
Model Stellar® 5521 Crane Specifications Sheet