312E Hydraulic Excavator Specications
Bucket Specifications and Compatibility
Width Capacity Weight Fill
m
3
yd
3
kg lb %
Reach Boom
R3.0
R3.0 R2.8 R2.5 (9'10")
mm in (9'10") (9'2") (8'2") Thumb*
Without Quick Coupler
General Duty (GD) 450 18 0.20 0.27 276 608 100%
600 24 0.31 0.40 326 719 100%
750 30 0.41 0.54 374 823 100%
900 36 0.53 0.69 423 932 100%
1050 42 0.65 0.84 469 1,034 100%
1200 48 0.76 1.00 510 1,125 100% X X X X
Severe Duty (SD) 600 24 0.31 0.40 367 810 90%
750 30 0.41 0.54 425 936 90%
900 36 0.53 0.69 483 1,065 90%
1050 42 0.65 0.84 529 1,166 90%
Maximum load pin-on (payload + bucket) kg 1745 1835 1970 1695
lb 3,846 4,044 4,342 3,736
With Center Lock Quick Coupler
General Duty (GD) 450 18 0.20 0.27 276 608 100%
600 24 0.31 0.40 326 719 100%
750 30 0.41 0.54 374 823 100%
900 36 0.53 0.69 423 932 100%
1050 42 0.65 0.84 469 1,034 100%
1200 48 0.76 1.00 510 1,125 100%
Severe Duty (SD) 600 24 0.31 0.40 367 810 90%
750 30 0.41 0.54 425 936 90%
900 36 0.53 0.69 483 1,065 90%
1050 42 0.65 0.84 529 1,166 90%
Maximum load with coupler (payload + bucket) kg 1499 1589 1724 1449
lb 3,304 3,503 3,800 3,194
The above loads are in compliance with hydraulic excavator standard EN474, they do not exceed
Maximum Material Density:
87%of hydraulic lifting capacity or 75% of tipping capacity with front linkage fully extended
atgroundline with bucket curled.
2100 kg/m
3
(3,500 lb/yd
3
)
1800 kg/m
3
(3,000 lb/yd
3
)
Capacity based on ISO 7451.
1500 kg/m
3
(2,500 lb/yd
3
)
Bucket weight with Long tips.
* Densities with 3.0 m (9'10") thumb stick do not consider thumb weight.
X Not recommended
Caterpillar recommends using appropriate work tools to maximize the value customers receive from our products. Use of work tools, including buckets, which are
outside of Caterpillar’s recommendations or specifications for weight, dimensions, flows, pressures, etc. may result in less-than-optimal performance, including
but not limited to reductions in production, stability, reliability, and component durability. Improper use of a work tool resulting in sweeping, prying, twisting and/or
catching of heavy loads will reduce the life of the boom and stick.
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