Operating Specs
| Operating Weight w/ Cab |
7810 lb (3550 kg) |
| Operating Weight w/ Canopy |
7546 lb (3430 kg) |
| Max Dig Depth (STD Stick) |
124.4 in (3160 mm) |
| Max Dig Depth (Long Stick) |
140.2 in (3560 mm) |
| Dump Height (STD Stick) |
140.1 in (3570 mm) |
| Dump Height (Long Stick) |
149.6 in (3800 mm) |
| Operating Voltage |
12 V |
| Alternator |
55 amps |
| Battery |
12 V, 52 Ah, CCA 650 |
Dimensions
| Shipping Length |
199.6 in (5070 mm) |
| Undercarriage Length |
81.1 in (2060 mm) |
| Width – Upper Structure |
60.6 in (1540 mm) |
| Width – Over Track |
61.0 in (1550 mm) |
| Track Gauge |
49.2 in (1250 mm) |
| Track Shoe Width |
11.9 in (300 mm) |
| Height – Over Cab |
96.1 in (2440 mm) |
| Height – Over Canopy |
96.1 in (2440 mm) |
| Height – Swing Tail |
55.9 in (1420 mm) |
| Swing Bearing Height |
23.2 in (590 mm) |
| Center Ground Clearance |
11.4 in (290 mm) |
| Swing Radius – Rear |
55.1 in (1400 mm) |
Working Range
| CAT 303.5 |
Standard Stick |
Long Stick |
| Stick Length |
48.8 in (1240 mm) |
64.6 in (1640 mm) |
| A. Boom in Reach |
79.9 in (2030 mm) |
80.7 in (2050 mm) |
| B. Maximum Cutting Height |
198.4 in (5040 mm) |
207.1 in (5260 mm) |
| C. Maximum Dump Height |
140.6 in (3570 mm) |
149.6 in (3800 mm) |
| D. Maximum Digging Depth |
124.4 in (3160 mm) |
140.2 in (3560 mm) |
| E. Maximum Vertical Dig Depth |
93.3 in (2370 mm) |
109.1 in (2770 mm) |
| F. Maximum Reach at Ground Level |
203.5 in (5170 mm) |
218.1 in (5540 mm) |
| G. Maximum Horizontal Reach |
208.3 in (5290 mm) |
222.4 in (5650 mm) |
| Stick Digging Force |
4114 lbf (18.34 kN) |
3080 lbf (13.73 kN) |
| Bucket Digging Force |
5742 lbf (25.60 kN) |
5742 lbf (25.60 kN) |
Engine Details
| Number of Cylinders |
3 |
| Engine Make |
Caterpillar |
| Engine Model |
Cat 3013 |
| Displacement |
91.3 cu in (1.496 L) |
| Bore |
3.31 in (84 mm) |
| Stroke |
3.54 in (90 mm) |
| Net Power |
25 hp (19 kw) |
| Gross Power |
27 hp (20 kw) |
| Power Measured @ |
2300 rpm |
| Aspiration |
Naturally aspirated |
| Air Cleaner |
Primary and secondary air filters |
| Radiator |
Steel core, double-layer, fin-type radiator |
Swing System
| Type |
Hydraulic Motor Driven |
| Machine Swing Speed |
9.3 rpm |
| Boom Swing, Left w/o Stop |
90° |
| Boom Swing, Left w/ Stop |
55° |
| Boom Swing, Right |
50° |
| Lubrication System |
Centralized lubrication |
| Swing Brakes |
Automatic swing brake, spring applied, hydraulic release |
Undercarriage
| Track Shoes |
11.8 in (300 mm) |
| Track Gauge |
49.2 in (1250 mm) |
| Number of Rollers (each side) |
4 |
| Number of Carrier Rollers (each side) |
1 |
| Gradeability, High Speed |
30° |
| Gradeability, Low Speed |
37° |
Travel System
| Type |
The two-speed hydrostatic power train |
| Travel Speed, High |
2.8 mph (4.5 km/h) |
| Travel Speed, Low |
1.6 mph (2.6 km/h) |
| Maximum Traction Force, High Speed |
3825 lbf (17 kN) |
| Maximum Traction Force, Low Speed |
6750 lbf (30 kN) |
| Drive Modules |
Integrated into the roller frame |
Dozer Blade
| Dozer Blade |
14.6 in (370 mm) |
| Dozer Blade Width |
61.0 in (1550 mm) |
| Blade Dig Depth |
13.8 in (350 mm) |
| Blade Lift Height |
16.5 in (420 mm) |
Hydraulic System
| Pumps |
2 piston pumps + 1 gear-type pump |
| Piston Pump Flow |
2x 9.9 gal/min (37.9 L/min) |
| Gear Pump Flow |
7.54 gal/min (29 L/min) |
| Operating Pressure – Equipment |
2987 psi (20600 kPa) |
| Operating Pressure – Travel |
2987 psi (20600 kPa) |
| Operating Pressure – Swing |
2494 psi (17200 kPa) |
| Auxiliary Hydraulic Lines |
Optional auxiliary hydraulic lines / Secondary optional auxiliary line uses the bucket cylinder hydraulic circuit |
| Auxiliary Circuit Primary Pump Flow |
17.4 gal/min (66.9 L/min) |
| Auxiliary Circuit Primary Pressure |
2987 psi (20600 kPa) |
| Stick Digging Force (standard) |
4114 lbf (18.34 kN) |
| Stick Digging Force (long) |
3080 lbf (13.73 kN) |
| Bucket Digging Force |
5742 lbf (25.60 kN) |
Service Refill Capacities
| Fuel Tank Capacity |
14.3 gal (55 L) |
| Engine Oil Capacity |
1.5 gal (5.7 L) |
| Cooling System Capacity |
1.3 gal (5.1 L) |
| Hydraulic System Capacity |
18.2 gal (70 L) |
| Hydraulic Tank Capacity |
12 gal (46 L) |
Operator Environment
| FOPS / TOPS |
ISO 10262 Level I / ISO 12117 |
| Instrument Cluster |
Gauges for fuel level, engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs |
| HVAC (for Cab) |
Heater and defroster |
| Operator Sound Pressure, Cab |
82 dB(A) |
| Operator Sound Pressure, Canopy |
80 dB(A) |
| Seat |
Suspension seat, vinyl or fabric covered |
The CAT 303.5 Mini Excavator is compatible with a wide range of attachments and work tools, making it a highly versatile machine for construction, landscaping, utility, and demolition tasks.
Cat A13 Auger
The Cat A13 Auger is a high-performance attachment designed for compact and mid-size Cat equipment, especially for drilling holes in various ground conditions: drilling holes for fence posts, footings, trees, signs, etc.
| Overall Width with Bracket |
49 in (1238 mm) |
| Housing Width |
10 in (247 mm) |
| Overall Length with Bracket |
25 in (640 mm) |
| Housing Length |
15 in (378 mm) |
| Overall Height with Bracket |
40 in (1016 mm) |
| Swing Range |
70° |
| Drive Unit Weight |
176 lb (80 kg) |
| Mounting Bracket Weight |
174 lb (79 kg) |
| Total Weight (w/o bits) |
350 lb (159 kg) |
| Drive Method |
Chain drive |
| Required Hydraulic Flow Range |
11 – 23 gal/min (42 – 87 L/min) |
| Optimal Hydraulic Pressure Range |
2100 – 3300 psi (14500 – 22700 kPa) |
| Drive Shaft Torque @ Max Pressure |
2043 lb ft (2772 Nm) |
| Bit Speed (drive shaft) @ Max Flow |
114 rpm |
| HEX Output Shaft Size |
2 in (51 mm) |
| Auger Bit Retention |
Cross bolts/nuts |
| Housing Design |
Box |
Cat CVP16 Vibratory Plate Compactor
The Cat CVP16 Vibratory Plate Compactor is a specialized attachment designed for use with compact excavators like the CAT 303.5. It’s ideal for compacting soil, trenches, and backfill, offering high-performance compaction in a compact form.
| Impulse Force |
3642 lbf (16.2 kN) |
| Impact Frequency |
2200 bpm (36.7 Hz) |
| Base Plate Width |
12 in (305 mm) |
| Compaction Area |
2 ft2 (0.19 m2) |
| Base Plate Pressure |
12.8 psi (88 kPa) |
| Base Plate Length |
24 in (610 mm) |
| Optimal Hydraulic Flow |
10 gal/min (38 L/min) |
| Minimum Operating Pressure |
1600 psi (11030 kPa) |
| Weight |
476 lb (216 kg) |
Cat H50 Hydraulic Hammer
The Cat H50 Hydraulic Hammer is a compact, high-performance breaker designed for mini excavators, skid steer loaders, and other compact machines. It’s ideal for light to medium-duty demolition, construction, and trenching work.
| A. Overall Width with Bracket |
13.4 in (340 mm) |
| B. Housing Width |
11.0 in (280 mm) |
| C. Hammer Length |
36.4 (925 mm) |
| D. Tool Width |
2 in (50 mm) |
| E. Tool Length |
10.3 (261 mm) |
| Recommended Carrier Weight |
5512 – 9921 lb (2500 – 4500 kg) |
| Operating Weight* |
441 lb (200 kg) |
| Impact Frequency |
450 – 1800 bpm (7.5 – 30 Hz) |
| Impact Energy (certified)** |
146 ft lbf (198 J) |
| Acceptable Oil Flow |
5.3 – 18.5 gal/min (20 – 70 L/min) |
| Operating Pressure |
1523 psi (10500 kPa) |
* Operating Weight includes hammer, standard tool and average mounting bracket.
** Certified by CIMA- MBMB (Construction Industry Manufacturers Association Mounted Breaker Manufacturers Bureau).
