QMC 8078S

ASME B30.5 / IMPERIAL 85%

Basis of Design
Item Description Remarks
Truck chassis Per customer
Driver weight 250 pounds Included in analysis
Fuel tank 100 gallons Included in analysis
Hydraulic tank 100 gallons Included in analysis, location may vary
Minimum Frame Requirements

Minimum selection modulus per rail = 39.8 in.3

Minimum yield strength = 110 KSI

Weight Distribution
  Front Rear Total
Tractor 15,550 13,460 29,010
Crane 14,180 25,700 39,880
Totals 29,730 39,160 68,890

Total axle limits shown are based on Federal D.O.T. regulations bridge formula.

Truck dimensions, weights, payload, and lifting performance representative of design baseline. Variations from information shown (truck weights, wheel base, front axle to back of cab, and more) may be accommodated and may result in adjustment of payload, payload size, and crane lifting capacity. Contact QMC Cranes with your requirements.

Load Chart

34 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
6 74 101,500 101,500 101,500
8 70 100,800 95,000 96,800
10 66 89,100 83,600 85,300
12 63 79,800 74,400 76,100
15 57 68,200 60,500 64,000
18 50 56,200 48,800 51,700
20 46 50,100 43,000 45,500
25 32 39,000 31,800 34,600
56 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
8 79 68,800 68,800 68,800
10 77 68,800 68,800 68,800
12 75 70,200 70,200 70,200
15 72 64,300 60,800 64,300
18 68 56,500 49,100 52,000
20 66 50,400 43,300 45,900
25 60 39,300 32,400 35,000
30 54 31,800 22,900 27,900
35 47 26,400 17,100 20,600
40 39 22,300 13,300 15,400
45 30 19,100 10,500 11,900
50 16 15,700 8,400 9,300
78 Foot Boom
Working
Radius
Boom
Angle
Rated Load
Rear Side Front
12 81 53,200 53,200 53,200
15 78 46,500 46,500 46,500
18 76 40,600 40,600 40,600
20 74 37,500 37,500 37,500
25 70 31,100 31,100 31,100
30 66 26,500 23,000 26,500
35 62 23,000 17,300 20,800
40 58 20,100 13,400 15,600
45 53 17,800 10,700 12,100
50 48 15,900 8,600 9,600
55 43 14,300 7,000 7,700
60 37 12,800 5,700 6,200
65 30 11,300 4,700 5,000
70 21 10,000 3,800 4,000
74 0 1,900 1,900 1,900

Red lines indicate transition from structural to tipping limits. Loads above the line are based on structural limits. Loads below the line are based on 85% actual tipping condition per ASME B30.5.

Wire Rope Capacity
Parts Line 1 2 3 4 5 6 7 8 9
Load Limit 11,280 22,560 33,840 45,120 56,400 67,680 78,960 90,240 101,520

Do not exceed parts of line ratings.

  1. Load does not include blocks, slings, and all other equipment used to handle objects being lifted.
  2. Load ratings are for zero degree list.
  3. Loads must be freely suspended.
  4. Rope: Rotation resistant, compacted strand, 9080 lb. capacity.
  5. This chart is only a guide and should not be used to operate the crane. Individual crane’s load chart, operating instructions, and other instructional plates must be read and understood prior to operating crane.