Model 3855C

23.8' - 54.8', 2-Piece Boom

Standard Specifications

Features:

Boom: The 23.8 Ft. to 54.8 Ft., three section boom features full hydraulic extension and retraction. Its welded steel box construction has replaceable wear pads and bushings. A 10" bore vertical luff cylinder increases load space and capacity at low boom angles. Maximum tip height is 64'. Elevation -3 to 80 degrees.
Boom Tip: Four sheaves with roller bearings, cable stays, and pad eye for wedge socket provide the ability to reeve from 1 to 6 parts of line without requiring attachment of snatch blocks. Boom tip has quick reeve design that does not require removal of wedge socket to change parts of line. The use of non-metallic sheaves reduces boom weight and increases cable life.
Upperworks: The mast mounts on a 39" diameter swing bearing and is driven by a planetary gearbox with a spring applied integral brake. The standard hydraulic and electric rotary swivels provide 360 degree continuous rotation, and are accessible from the top of the deck for ease of maintenance.
Controls: Outrigger controls are operated from the ground on both sides at the rear. Boom controls are located in the seat armrests in the operators cab. All controls are fully proportional.
Operators Cab: Aluminized steel construction. Features include slide back door, tilt open sunroof, 5 way adjustable seat, windshield wiper, dome light, fan, multi-function joystick controls, engine on/off, foot throttle, and all boom controls. A pull out access platform is also included.
Hydraulic System: Hydraulic system includes transmission mounted PTO, gear pump, and hydraulic reservoir with sight gauge, breather, and reservoir mounted 10 micron full flow return filter.
Outriggers: Standard 18' spread, out and down type outriggers, at front and rear, allow ease of set up on uneven terrain. Firm footing is achieved by means of 12" fixed pads.
Subframe: A high capacity torsion box connects the crane and outriggers into an integral structure designed to withstand all loads produced during crane operation. The design does not rely on the truck chassis for strength which allows for mounting on a lighter and more economical truck. The clamp-type mounting requires no welding or drilling on the chassis rails and maintains full factory warranty.
Body: A partial non-skid steel deck is provided with access ladders, headache rack, boom rest, pad racks, and all DOT required lighting. All components are pre-painted in customer's choice of colors with epoxy primer and polyurethane topcoat prior to assembly to ensure maximum protection.
Load Chart: Each crane is load and stability tested before completion. This results in an individual load chart that is optimized for each crane.
Winch and Reeving: Standard winch has variable speeds, power up and power down, planetary drive with spring applied, hydraulically-released brake.
Maximum base layer line pull: 12,000 lbs.
Maximum top layer : 225 ft./min
Reeving: Four parts of line standard (up to six parts of line available)
Rope: 495' - 1/2" diameter, 6x25 FW, IWRC, EIPS
Load Block: 15-ton, double sheave with roller bearings, swivel hook, and heavy duty safety latch
One operation, parts, and maintenance manual.

Options

Axle Weights (LB.)
Distribution 2 Axle Truck

	Truck	Crane	Complete Unit
Front Axle	6,830	4,450	11,280
Rear Axle	3,900	15,480	19,380
Total	10,730	19,380	30,660

Load Chart for 3855C on two axles

Radius in Feet	Over Rear			Over Side			Over Front
Radius in Feet	24' Boom	39' Boom	55' Boom	24' Boom	39' Boom	55' Boom	24' Boom	39' Boom	55' Boom
6	49,260*			49,260*			54,960*
8	42,540*			42,540*			44,510*
10	37,370*	33,260*		37,380*	33,260*		37,880*	33,260*
12	27,570*	27,180		33,250*	28,950*		33,260*	28,950
15	19,290	18,940	18,450	28,430	24,140	22,590	28,610	24,140	22,590
18	14,560	14,250	14,730	21,040	20,600	19,320	24,610	20,840	19,320
20	12,380	12,100	12,570	16,710	16,330	17,050	21,880	19,150	17,670
23	9,500	-	-	12,100	-	-	15,000	-	-
25		8,510	8,970		10,320	10,940		12,050	12,940
30		6,300	6,750		7,160	7,730		7,520	8,270
35		4,790	5,250		5,200	5,760		5,070	5,760
38.5		3,800	-		3,900	-		3,600	-
40			4,160			4,420			4,200
45			3,340			3,440			3,120
50			2,690			2,700			2,330
54			2,100			2,050			1,600

*Maximum load with standard reeving is 30,000 lbs.
Numbers shown in bold type (above tipping line) indicate structural capacity limits. All other numbers indicate tipping limits. Actual numbers may vary due to differences in finished weight, wheelbase, etc.

3-Axle

Axle Weights (LB.) Distribution
3 Axle Truck

	Truck	Crane	Complete Unit
Front Axle	9,687	3,278	12,966
Rear Axle	8,832	24,574	33,406
Total	18,520	27,852	46,372

Load Chart for 3855C on three axles
With Optional 6,500 lb. Counterweight

Radius in Feet	Over Rear			Over Side			Over Front
Radius in Feet	24' Boom	39' Boom	55' Boom	24' Boom	39' Boom	55' Boom	24' Boom	39' Boom	55' Boom
6	53,580*			53,580*			54,850*
8	44,510*			44,390*			44,390*
10	37,880*	33,260*		37,750*	33,140*		37,750*	33,140*
12	33,260*	28,950		33,130*	28,810*		33,130*	28,810
15	28,610	24,140	22,450	28,470	24,000	22,450	28,470	24,000	22,450
18	24,610	20,840	19,190	24,470	20,700	19,190	24,470	20,700	19,190
20	21,880	19,150	17,530	21,740	19,010	17,530	21,740	19,010	17,530
23	17,000	-	-	16,600	-	-	15,900	-	-
25		16,000	14,480		14,300	14,480		12,960	13,780
30		12,110	12,390		10,160	10,740		8,340	9,050
35		9,500	9,990		7,600	8,160		5,760	6,430
38.5		7,800	-		6,050	-		4,300	-
40			8,141			6,410			4,760
45			6,760			5,140			3,610
50			5,680			4,170			2,750
54			4,800			3,400			2,050

*Maximum load with standard reeving is 30,000 LB.
Numbers shown in bold type (above tipping line) indicate structural capacity limits. All other numbers indicate tipping limits. Actual numbers may vary due to differences in finished weight, wheelbase, etc.

Wire Rope Capacity (LBS).
Parts Line	1	2	3	4	5	6	7	8
Line Pull	7,600	15,200	22,800	30,400*	38,000*	45,600*	53,200*	60,800*

Do not exceed parts of line rating.

Fly jib load chart
(3 axle truck)

55 Foot Boom + 24 Foot Fly Jib (with optional 6500 lb. counterweight)
		Over Rear	Over Side	Over Front
Working Radius	Boom Angle	Rated Load	Rated Load	Rated Load
13	80	9,080	9,080	9,080
15	79	9,080	9,080	9,080
18	77	9,080	9,080	9,080
20	75	9,080	9,080	9,080
25	71	9,080	9,080	9,080
30	68	8,740	8,740	8,740
35	64	8,000	8,000	8,000
40	60	7,390	7,390	7,390
45	55	6,860	6,860	6,860
50	51	6,040	6,070	5,960
55	46	5,410	5,410	4,970
60	40	4,880	4,790	4,190
65	34	4,350	4,140	3,560
70	26	4,100	3,610	3,040
75	16	3,630	3,150	2,600
78	0	3,100	2,890	2,320

Structural Load Chart

Radius in Feet	Boom Angle	23.8 Foot Boom	Boom Angle	39 Foot Boom	Boom Angle	54.8 Foot Boom
6	78	54,960*
8	73	44,510*
10	67	37,880*	78	33,260*
12	62	33,260*	75	28,950
15	53	28,610	70	24,140	78	22,590
18	42	24,630	65	20,840	74	19,320
20	33	21,900	62	19,150	72	17,670
25			53	16,000	66	14,630
30			42	13,150	60	12,540
35			28	10,720	53	10,990
40					46	9,390
45					37	7,980
50					26	6,860
54					0	5,750