The Caterpillar 321D crawler excavator was introduced in 2007, with an operating weight of 53,308 lb (24.2 t), engine output of 148 hp (110 kW) and a maximum digging depth of 22 ft (6.71 m). Maximum horizontal reach is 32.7 ft (9.97 m) and it uses the C6.4 Acert engine.
Caterpillar Crawler Excavator Specifications
Crawler Excavator • Introduced 2007 • C6.4 Acert
Weight: 53,308 lb (24.2 t)Power: 148 hp (110 kW)Dig depth: 22 ft (6.71 m)
Key specifications
53,308 lb (24.2 t)Operating weight
148 hp (110 kW)Engine power
22 ft (6.71 m)Digging depth
32.7 ft (9.97 m)Horizontal reach
19.7 in (500 mm)Track width
2007Introduced
Useful excavator charts
Charts appear only when enough usable specifications are available.
Digging geometry
Dig depth
22 ft
Reach
32.7 ft
Transport dimensions
Length
29.1 ft
Width
9.8 ft
Height
9.9 ft
Model spec snapshot
Main numeric specifications for this excavator.
53,308 lbWeight
148 hpPower
How the Caterpillar 321D compares
Comparison is against Caterpillar crawler excavators in the same broad operating-weight class where enough comparable data exists.
Engine power
148 hp
7% below avg
40th percentile
Digging depth
22 ft
In line with avg
63rd percentile
Horizontal reach
32.7 ft
In line with avg
74th percentile
Engine power148 hp
Low 114 hpAverage 158 hpHigh 208 hp
About 7% below the peer average.
Digging depth22 ft
Low 19.4 ftAverage 21.5 ftHigh 25.6 ft
In line with the peer average.
Horizontal reach32.7 ft
Low 30.3 ftAverage 32.3 ftHigh 36.6 ft
In line with the peer average.
This model Peer average
Crawler excavator information
Manufacturer
Caterpillar
Model
321D
Introduced
2007
Operating specifications
Operating weight
53,308 lb (24.2 t)
Maximum digging depth
22 ft (6.71 m)
Maximum horizontal reach
32.7 ft (9.97 m)
Engine and emissions
Engine manufacturer
Caterpillar
Engine model
C6.4 Acert
Engine power
148 hp (110 kW)
Displacement
391 cu in (6.4 L)
RPM at maximum torque
1800 rpm
Diesel particulate filter
No
Dimensions and transport
Transport length
29.1 ft (8.88 m)
Transport width
9.8 ft (2.98 m)
Transport height
9.9 ft (3.03 m)
Track width
19.7 in (500 mm)
Disclaimer: Specifications can vary by configuration, market and attachment. Verify critical dimensions, capacities and ratings against the official machine documentation and the Caterpillar USA website.
