Demo Video
Description
We are excited to offer this professionally reconditioned 1990 Komatsu PC50UU mini excavator, which has an operating weight of 5,185 Kg (11,433 pounds) and only 3,127 hours of usage. The machine is in excellent running condition, as demonstrated by our transparent photos and video. The machine is powered by a Yanmar diesel engine (3D95S-W-1) with a capacity of 38.5 HP. Additionally, this unit has been modified to operate with Caterpillar (S.A.E) control pattern by default. Japanese Komatsu control pattern can also be selected via a built-in quick shifter.
The mini excavator has undergone thorough servicing, including a replacement of hydraulic fluids, engine oils, coolant with antifreeze, and air, fuel, and oil filters. We have also made several upgrades, including a new hydraulic thumb controlled by a foot pedal, a new water-resistant seat and seat belt, a new starting battery, a new LED headlight, new bucket teeth, new decals, and a bright Caterpillar-yellow paint job. The unit has been fumigated and steam cleaned in accordance with U.S. CBP import requirements. This machine also comes with a spare ignition key, spare bucket teeth, spare filters, and a full set of operations, service & part manuals.
Product Features
This model has a highly-sought-after two-piece offset boom which is particularly useful for tight workspace applications with limited swing. If you are working in a tight alley, the boom can knuckle off to the right or left so that the machine can dig in line with one of the tracks up next to a structure. This model is qualified as a zero-tail swing machine with its 1750-mm upper body, 2000-mm overall width, and a tail swing radius of 990 mm (3'3"). This unit also comes with dual speed travel with high speed of 2.0 mph and low speed of 1.1 mph.
With Japanese ingenuity of applying sound-absorbing material to various parts of the machine, low noise performance comparable to that of a passenger car has been achieved. This model is designed for night work and urban areas such as schools and hospitals with noise level rated at 58 dBA @ 30 meter (98'5") and 70 dBA @ 7 meter (23'0"). To operator's ears, noise exposure is rated at only 83 dBA.
Product Manuals
General
- Make: Komatsu
- Model: PC50UU
- Serial #: 5269
- Track: Steel with Rubber Pads (BRAND NEW)
- Year built: 1990
- Hour meter: 3,127
- Origin: Japan
- Operating weight: 5,185 Kg (11,433 lbs)
- Bucket digging force: 3,500 Kg (7,716 lbs)
- Max ground pressure: 0.32 Kg/cm2 (4.6 psi)
- Swing speed: 9.0 rpm
- Swing max slope angle: ? deg.
- Travel speed: 1.7 kmh (1.1 mph) & 3.2 kmh (2.0 mph)
- Gradeability: 30 deg.
Engine
- Make: Komatsu
- Serial #: 23530
- Fuel: Diesel
- Model: 3D95S-W-1
- No. of cylinders - bore x stroke: ?
- Piston displacement: 2.020 L (123.3 cu.in.)
- Firing order: ?
- Flywheel horsepower: 38.5 HP @ 2,500 RPM
- Max torque: ? Kgm @ ? rpm
- Max speed at no load (high idling) : 2,700 rpm
- Min speed at no load (low idling): 950 rpm
- Min fuel consumption: ? g/HP.h
- Alternator: ?
- Starting Motor: ?
- Battery: ?
Fuel, Lubricating Oil, and Coolant
- Fuel: 56 Liter (14.8 US gallon)
- Hydraulic Oil (tank oil level): ?
- Hydraulic Oil (total system): 70 Liter (18.5 US gallon)
- Engine Oil (minimum): ?
- Engine Oil (maximum): ?
- Coolant: ?
OEM Working Range
Arm length |
---|
Arm length | ||
---|---|---|
a | Maximum digging height | 6180 mm (20'3") |
b | Maximum dumping height | 4440 mm (14'7") |
c | Maximum digging depth | 3800 mm (12'6") |
d | Maximum vertical digging depth | 2500 mm (8'2") |
e | Maximum digging reach | 5580 mm (18'4") |
f | Maximum reach–ground level | 5470 mm (17'11") |
g | Minimum swing radius | 990 mm (3'3") |
h | Maximum blade lift | 320 mm (1"0") |
i | Maximum blade depth | 380 mm (1'3") |

Recorded Dimensions
- Transport Length: 5,950 mm (19'6")
- Transport Width: 2,000 mm (6'7")
- Transport Height: 2,420 mm (7'11")
- Backfill Blade Width: 2,000 mm (6'7")
- Backfill Blade Height: 400 mm (1'4")
- Bucket Width: 600 mm (2'0")
- Thumb Width: 320 mm (1'1")
- Track Width: 400 mm (1'4")
- Track Length: 2,390 (7'10")
- Track Standard: 400mm (width) x 72.5mm (pitch) x 70 (link)
- Boom Cylinder: 930 mm (3'1")
- Arm Cylinder: 750 mm (2'6")
- Bucket Cylinder: 585 mm (1'11")
- Thumb Cylinder: 290 mm (0'11")
OEM Dimensions
A | 5950 mm (19'6") | Overall length |
B | 2420 mm (7'11") | Overall height |
C | 2000 mm (6'7") | Overall width |
D | 590 mm (1'11") | Ground clearance, counterweight |
E | 305 mm (1'0") | Ground clearance, min. |
E2 | 400 mm (1'4") | Backfill blade height |
F | 990 mm (3'3") | Tail swing radius |
G | 1875 mm (6'2") | Track length on ground |
H | 2380 mm (7'10") | Track length |
I | 1600 mm (5'3") | Track gauge |
J | 400 mm (1'4") | Shoe width |
K | 1750 mm (5'9") | Machine upper width |
L | No Data | Rear End Radius |
M/N | No Data | Boom swing angle |
O | 740 mm (2'5") | Bucket offset LH |
P | 810 mm (2'8") | Bucket offset RH |
