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5-88 Edition 47
Lift and Range Diagram
●
579C Knuckleboom Loader
Processing/Loading
Trailer Mount
Knuckleboom Loaders
3 m/10'0"
4.6 m/15'0"
6.1 m/20'0"
7.6 m/25'0"
9.1 m/30'0"
Maximum
Reach
kg
lb
kg
lb
kg
lb kg
lb
kg
lb
kg
lb
10.6 m
7455.0
16,457.0
100% Hydraulics
(35'0")
6485.6
14,317.0
Over End
6485.6
14,317.0
Over Side
9.1 m
7039.2
15,539
100% Hydraulics
(30'0")
6124.1
13,519
Over End
6124.1
13,519
Over Side
7.6 m
7233.5
15,968
6280.8
13,865
100% Hydraulics
(25'0")
6293.1
13,892
5464.5
12,063
Over End
6293.1
13,892
5464.5
12,063
Over Side
6.1 m
7412.0
16,362
6695.8
14,781
100% Hydraulics
(20'0")
6448.5
14,235
5845.5
12,860
Over End
6448.5
14,235
5845.5
12,860
Over Side
4.6 m
9268.8
20,461
7929.3
17,504
6898.3
15,228
5761.7
12,719
100% Hydraulics
(15'0")
8063.9
17,801
6898.7
15,229
6001.3
13,248
5012.9
11,066
Over End
8063.9
17,801
6898.7
15,229
5748.2*
12,646*
4108.6*
9039*
Over Side
3.0 m
10 887.4
24,034
9338.1
20,614
7782.5
17,180
5958.8
13,154
4318.0
9532
100% Hydraulics
(10'0")
9471.8
20,909
8124.1
17,934
6771.0
14,947
5184.1
11,444
3756.7
8293
Over End
9471.8
20,909
8124.1
17,934
5592.3*
12,303*
4049.1*
8908*
3609.1*
7940*
Over Side
1.5 m
13 174.1
29,082
9947.4
21,959
7940.6
17,529
5767.1
12,731
100% Hydraulics
(5'0")
11 461.4
25,301
8654.6
19,105
6908.3
15,250
5017.4
11,076
Over End
11 461.4
25,301
8045.0*
17,699*
5424.1*
11,933*
3980*
8756*
Over Side
0 m
12 569.8
27,748
13 608.6
30,041
10 020.4
22,120
7702.8
17,004
5118.9
11,300
100% Hydraulics
(0'0")
10 935.4
24,140
11 839.2
26,135
8717.5
19,244
6701.7
14,794
4453.4
9831
Over End
10 935.4
24,140
11 839.2
26,135
7757.3*
17,066*
5289.5*
11,637*
3935.5*
8658*
Over Side
–
1.5 m
11 940.2
26,358
12 527.3
27,654
9174.6
20,253
6702.6
14,796
100% Hydraulics
(–5'0")
10 387.7
22,931
10 898.7
24,059
7981.9
17,620
5831.5
12,873
Over End
10 387.7
22,931
10 898.7
24,059
7601.4*
16,723*
5226.8*
11,499*
Over Side
579C Knuckleboom Loader
9.9 m (32'6") Boom
NOTES:
Do not attempt to lift or hold any load that is greater than the rated values over the end or
side.The weight of the grapple and all lifting accessories must be deducted from lift capaci-
ties shown.
1. The over end capacities and over side capacities do not exceed 87% of hydraulic limited
capacity or 75% of stability limited capacity.
– Stability limited capacities are indicated with an asterisk (*).
2. The lift point is located at the grapple knuckle pin.
3. Lift capacities are based on the machine standing on firm, uniform supporting surface.
User must make allowances for job site conditions.
4. Operator should be fully acquainted with the Operator’s Manual and all safety instructions
furnished by Caterpillar Inc. prior to operating the machine.
5. Lift capacities are in compliance with SAE J2417, “Lift Capacity Calculation Method —
Knuckleboom Log Loaders and Certain Forestry Equipment.”