340 UHD Ultra High Demolition Hydraulic Excavator
The Cat® 340 UHD provides optimum machine solutions for building demolition up to 8 stories. With its unique coupling system, you can switch between two lengths of Ultra High Demolition fronts and two types of Retrofit booms and sticks with no special tools in 15 minutes. You simply won’t find a better 50-ton class choice for demolition.
Specifications
Equipment
Product Brochures
Attachments
Units:
Engine
Engine Model
Cat C9.3B
Net Power - ISO 9249
346 hp
258.3 kW
Engine Power - ISO 14396 (DIN)
351 hp (metric)
351 hp (metric)
Engine Power - ISO 14396
347 hp
259 kW
Net Power - ISO 9249 (DIN)
352 hp (metric)
352 hp (metric)
Bore
5 in
115 mm
Stroke
6 in
149 mm
Displacement
568 in³
9.3 l
Biodiesel Capability
Up to B20¹
Emissions
Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 1,900 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels.Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Hydraulic System
Main System - Maximum Flow
560 l/min (148 gal/min)
Maximum Pressure - Equipment
5076 psi
35000 kPa
Maximum Pressure - Equipment - Lift Mode
5511 psi
38000 kPa
Maximum Pressure - Travel
5076 psi
35000 kPa
Maximum Pressure - Swing
4264 psi
29400 kPa
Swing Mechanism - UHD Fronts
Swing Speed
4.09 r/min
4.09 r/min
Swing Mechanism
Swing Speed
8 r/min
8 r/min
Maximum Swing Torque
105000 ft·lbf
143 kN·m
Weights
Operating Weight
122600 lb
55600 kg
Note (1)
Hydraulic Variable Gauge undercarriage, 22 m (72'2") UHD front, 600 mm (24") Heavy Duty (HD) triple grouser shoes and 9.0 mt (19,842 lb) counterweight. No work tool.
Machine Weight - Retrofit Configuration
118600 lb
53800 kg
Note (2)
Hydraulic Variable Gauge undercarriage, Retrofit boom, R3.2DB (10'6") stick, General Duty (GD) 2.27 m³ (2.97 yd³) bucket, 600 mm (24") HD triple grouser shoes and 9.0 mt (19,842 lb) counterweight.
UHD in Cradle
18700 lb
8480 kg
Retrofit Boom in Cradle - R3.9 DB Stick
13710 lb
6220 kg
Retrofit Boom in Cradle - R3.2 DB Stick
13340 lb
6050 kg
Retrofit Boom in Cradle - R2.8 DB Stick
13120 lb
5950 kg
2-Piece Retrofit Boom in Cradle - R3.2 DB Stick
17440 lb
7910 kg
Service Refill Capacities
Fuel Tank Capacity
159 gal (US)
600 l
Cooling System
11 gal (US)
40 l
Engine Oil
9 gal (US)
32 l
Swing Drive
5 gal (US)
18 l
Final Drive - Each
2 gal (US)
8 l
Hydraulic System - Including Tank
145 gal (US)
550 l
Hydraulic Tank
43 gal (US)
161 l
DEF Tank
21 gal (US)
80 l
Dimensions
Note (1)
22 m (72'2") UHD Front
Shipping Height - Top of Cab
11.1 ft
3383 mm
Cab Height - With OPG
11.8 ft
3585 mm
Shipping Length
49.9 ft
15160 mm
Tail Swing Radius
11.6 ft
3521 mm
Counterweight Clearance
4.6 ft
1397 mm
Ground Clearance
1.7 ft
510 mm
Track Length
18.9 ft
5770 mm
Track Length to Center of Rollers
15.6 ft
4770 mm
Working Gauge - Extended Position
11.1 ft
3400 mm
Shipping Gauge - Retracted Position
7.8 ft
2400 mm
Transport Width
10.7 ft
3255 mm
Machine Length - without Front, with Counterweight
23.3 ft
7077 mm
Machine Length - without Front and Counterweight
22.9 ft
6954 mm
Track Width - Extended
13.1 ft
4000 mm
Track Width - Retracted
9.8 ft
3000 mm
Note (2)
600 mm (24") Track Shoes
Working Ranges and Forces
Maximum Pin Height at Stick Nose
72.2 ft
22 m
Maximum Weight at Stick Nose
8160 lb
3700 kg
Maximum Working Pin Height at Stick Nose - 1/2
61 ft
18590 mm
Maximum Working Reach at Stick Nose - 1/2
38.4 ft
11680 mm
Maximum Height at Stick Nose in Max Reach Position
41.5 ft
12640 mm
Maximum Reach at Stick Nose
44.4 ft
13550 mm
Note (1)
22 m (72' 2") UHD Front (Over-the-Front)
Working Ranges and Forces - Retrofit Boom - Straight
Note 1
Straight - R3.2 m (10' 6") Stick (Over-the-Front) - HVG Undercarriage
Bucket
GD 2.27 m³ (2.97 yd³)
Maximum Pin Height at Stick Nose
39.8 ft
12.13 m
Maximum Weight at Stick Nose
9260 lb
4200 kg
Maximum Height at Stick Nose in Max Reach Position
7.6 ft
2310 mm
Maximum Reach at Stick Nose
34.8 ft
10620 mm
Maximum Digging Depth
16.1 ft
4910 mm
Maximum Reach - Ground Level
39.9 ft
12160 mm
Maximum Loading Height
34 ft
10370 mm
Minimum Loading Height
15.7 ft
4790 mm
Bucket Digging Force - ISO
47160 lbf
210 kN
Stick Digging Force - ISO
37300 lbf
166 kN
Working Ranges and Forces - Retrofit Boom - Bent
Note 1
Bent - R3.2DB (10'6") Stick - HVG Undercarriage
Bucket
GD 2.27 m³ (2.97 yd³)
Maximum Digging Depth
21.4 ft
6520 mm
Maximum Reach - Ground Level
36.7 ft
11180 mm
Maximum Cutting Height
35.4 ft
10790 mm
Maximum Loading Height
24.9 ft
7600 mm
Minimum Loading Height
10.4 ft
3180 mm
Bucket Digging Force - ISO
47160 lbf
210 kN
Stick Digging Force - ISO
37300 lbf
166 kN
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons).
Standard Equipment
NOTE
CAB
CAT TECHNOLOGY
ELECTRICAL SYSTEM
ENGINE
HYDRAULIC SYSTEM
SAFETY AND SECURITY
SERVICE AND MAINTENANCE
UNDERCARRIAGE AND STRUCTURES
