Contents
Dimensions
| CAT 308 CR | Standard Stick | Long Stick |
|---|---|---|
| 1. Dig Depth | 161.7 in (4108 mm) | 182.8 in (4643 mm) |
| 2. Vertical Wall | 117.8 in (2991 mm) | 134.0 in (3404 mm) |
| 3. Maximum Reach at Ground Level | 273.6 in (6949 mm) | 293.7 in (7460 mm) |
| 4. Maximum Reach | 281.1 in (7141 mm) | 300.7 in (7637 mm) |
| 5. Maximum Dig Height | 265.2 in (6736 mm) | 277.1 in (7039 mm) |
| 6. Maximum Dump Clearance | 187.4 in (4760 mm) | 199.7 in (5072 mm) |
| 7. Boom in Reach | 120.4 in (3059 mm) | 126.6 in (3215 mm) |
| 8. Tail Swing w/ Counterweight 551 lb (250 kg) |
62.0 in (1585 mm) | 62.0 in (1585 mm) |
| 8. Tail Swing w/ Counterweight 1103 lb (500 kg) |
64.0 in (1626 mm) | 64.0 in (1626 mm) |
| 8. Tail Swing w/o Counterweight | 57.1 in (1450 mm) | 57.1 in (1450 mm) |
| 9. Maximum Blade Height | 14.6 in (370 mm) | 14.6 in (370 mm) |
| 10. Maximum Blade Depth | 16 in (407 mm) | 16 in (407 mm) |
| 11. Boom Height in Shipping Position, w/o Tools* |
95.7 in (2430 mm) | 89.0 in (2260 mm) |
| 11. Boom Height in Shipping Position, w/ Tools** |
104.7 in (2660 mm) | 120.1 in (3050 mm) |
| 12. Cab Height | 100.0 in (2541 mm) | 100.0 in (2541 mm) |
| 13. Swing Bearing Height | 29.7 in (756 mm) | 29.7 in (756 mm) |
| 14. Overall Undercarriage Length | 113.4 in (2880 mm) | 113.4 in (2880 mm) |
| 15. Shipping Length w/ Counterweight 551 lb (250 kg) |
264.0 in (6706 mm) | 271.0 in (6872 mm)*** |
| 15. Shipping Length w/ Counterweight 1103 lb (500 kg) |
266.0 in (6747 mm) | 271.0 in (6872 mm)*** |
| 15. Shipping Length w/o Counterweight | 258.8 in (6574 mm) | 271.0 in (6872 mm)*** |
| 16. Boom Swing Right | 36.8 in (935 mm) | 36.8 in (935 mm) |
| 17. Boom Swing Left | 23.8 in (604 mm) | 23.8 in (604 mm) |
| 18. Track Belt/Shoe Width | 17.7 in (450 mm) | 17.7 in (450 mm) |
| 19. Overall Track Width | 90.6 in (2300 mm) | 90.6 in (2300 mm) |
| 20. Ground Clearance | 13.8 in (350 mm) | 13.8 in (350 mm) |
| 21. Stick Length | 71.7 in (1820 mm) | 92.8 in (2358 mm) |
* Boom Height when stick is pinned in transport position with no attachments.
** Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
*** With blade positioned at the rear of the machine.
Working Range
| CAT 308 CR | Standard Stick | Long Stick |
|---|---|---|
| Stick Length | 71.7 in (1820 mm) | 92.8 in (2358 mm) |
| Digging Force | 9509 lbf (42.3 kN) | 8032 lbf (35.7 kN) |
| Bucket Digging Force | 13946 lb (62.0 kN) | 13946 lb (62.0 kN) |
| Boom Swing Right | 36.8 in (935 mm) | 36.8 in (935 mm) |
| Boom Swing Left | 23.8 in (604 mm) | 23.8 in (604 mm) |
| Dig Depth | 161.7 in (4108 mm) | 182.8 in (4643 mm) |
| Vertical Wall | 117.8 in (2991 mm) | 134.0 in (3404 mm) |
| Maximum Reach at Ground Level | 273.6 in (6949 mm) | 293.7 in (7460 mm) |
| Maximum Reach | 281.1 in (7141 mm) | 300.7 in (7637 mm) |
| Maximum Dig Height | 265.2 in (6736 mm) | 277.1 in (7039 mm) |
| Maximum Dump Clearance | 187.4 in (4760 mm) | 199.7 in (5072 mm) |
| Boom in Reach | 120.4 in (3059 mm) | 126.6 in (3215 mm) |
| Max Dozer Blade Depth | 16 in (407 mm) | 16 in (407 mm) |
| Max Dozer Blade Height | 14.6 in (370 mm) | 14.6 in (370 mm) |
Weights
| Minimum Operating Weight with Cab | 18610 lb (8440 kg) |
| Maximum Operating Weight with Cab | 20628 lb (9355 kg) |
| Counterweight (Option 1) | 551 lb (250 kg) |
| Counterweight (Option 2) | 1103 lb (500 kg) |
Operating Specs
| Max Operating Weight | 20628 lb (9355 kg) |
| Max Dig Depth | 182.8 in (4643 mm) |
| Max Dump Height (Standart Stick) | 187.4 in (4760 mm) |
| Max Dump Height (Long Stick) | 199.7 in (5072 mm) |
| Operating Voltage | 12 V |
| Alternator | 60 amps |
| Battery | 12 V, CCA 900, 65 BCI Maintenance Free Battery |
Engine Details
| Number of Cylinders | 4 |
| Engine Make | Caterpillar |
| Engine Model | Cat C3.3B |
| Displacement | 203 cu in (3.3 L) |
| Bore | 3.7 in (94 mm) |
| Stroke | 4.7 in (120 mm) |
| Net Power | 69.5 hp (51.8 kw) |
| Gross Power | 74.3 hp (55.5 kw) |
| Power Measured @ | 2200 rpm |
| Aspiration | Turbocharged and aftercooled |
| Emission Standards | U.S. Epa Tier 4 Final + EU Stage V |
Swing System
| Machine Swing Speed | 10.6 rpm |
| Boom Swing, Left | 60° |
| Boom Swing, Right | 50° |
| Swing Brakes | Automatic Swing Brake |
Undercarriage
| Steel Tracks (Standard) | 17.7 in (450 mm) |
| Wide Steel Tracks (Optional) | 23.6 in (600 mm) |
| Steel Tracks with Rubber Pads (Optional) | 17.7 in (450 mm) |
Travel System
| Type | Automatic Two Speed Travel |
| Travel Speed, High | 3.2 mph (5.1 km/h) |
| Travel Speed, Low | 1.9 mph (3.1 km/h) |
| Maximum Traction Force – High Speed | 6250 lbf (27.8 kN) |
| Maximum Traction Force – Low Speed | 15175 lbf (67.5 kN) |
| Ground Pressure – Minimum Weight | 5.4 psi (36.9 kPa) |
| Ground Pressure – Maximum Weight | 5.9 psi (40.9 kPa) |
| Gradeability, Maximum | 30° |
| Travel Cruise Control | Standard |
Dozer Blade
| Height | 17 in (431 mm) |
| Standard Blade Width | 90.6 in (2300 mm) |
| Width Blade Wide | 96.5 in (2450 mm) |
Hydraulic System
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Pump Flow @ 2400 rpm | 44 gal/min (167 L/min) |
| Operating Pressure – Equipment | 4134 psi (28500 kPa) |
| Operating Pressure – Travel | 4134 psi (28500 kPa) |
| Operating Pressure – Swing | 3626 psi (25000 kPa) |
| Auxiliary Circuit Primary Pump Flow* | 35 gal/min (131 L/min) |
| Auxiliary Circuit Primary Pressure* | 4134 psi (28500 kPa) |
| Auxiliary Circuit Secondary Pump Flow* | 9 gal/min (33 L/min) |
| Auxiliary Circuit Secondary Pressure* | 4134 psi (28500 kPa) |
*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Service Refill Capacities
| Fuel Tank Capacity | 39 gal (147 L) |
| Engine Oil Capacity | 3.0 gal (11.2 L) |
| Cooling System Capacity | 2.6 gal (10 L) |
| Hydraulic System Capacity | 29 gal (110 L) |
| Hydraulic Tank Capacity | 14 gal (53 L) |
CAT 308 CR Buckets
| Type | Model / Specs |
|---|---|
| Heavy Duty Buckets (Pin Lock) | 300 mm (12 in), 96 L (3.4 ft3), Pin Lock, Weld-On Adapters 406 mm (16 in), 120 L (4.2 ft3), Pin Lock, Weld-On Adapters 457 mm (18 in), 139 L (4.9 ft3), Pin Lock, Weld-On Adapters 610 mm (24 in), 207 L (7.3 ft3), Pin Lock, Weld-On Adapters 762 mm (30 in), 280 L (9.9 ft3), Pin Lock, Weld-On Adapters 914 mm (36 in), 340 L (12 ft3), Pin Lock, Weld-On Adapters |
| Heavy Duty Buckets (Pin On) | 330 mm (13 in), 99 L (3.5 ft3), Pin On, 50 mm (2 in) 457 mm (18 in), 150 L (5.3 ft3), Pin On, 50 mm (2 in) 610 mm (24 in), 229 L (8.1 ft3), Pin On, 50 mm (2 in) 762 mm (30 in), 309 L (10.9 ft3), Pin On, 50 mm (2 in) 914 mm (36 in), 388 L (13.7 ft3), Pin On, 50 mm (2 in) |
| Heavy Duty Rock Buckets | 610 mm (24 in) 8.1 ft3, 427.7 lb 762 mm (30 in) 10.9 ft3, 491.6 lb |
| High Capacity Buckets | 406 mm (16 in), 160 L (5.7 ft3), Pin Lock, Weld-On Adapters 610 mm (24 in), 260 L (9.2 ft3), Pin Lock, Weld-On Adapters 457 mm (18 in), 180 L (6.4 ft3), Pin Lock, Weld-On Adapters 914 mm (36 in), 460 L (16.2 ft3), Pin Lock, Weld-On Adapters 762 mm (30 in), 360 L (12.7 ft3), Pin Lock, Weld-On Adapters |
| Ditch Cleaning Buckets | 1219 mm (48 in), 329 L (11.6 ft3), Pin On 1372 mm (54 in), 375 L (13.2 ft3), Pin On 1524 mm (60 in), 420 L (14.8 ft3), Pin On |
| Grading Buckets | 1200 mm (47 in) 47.2 in, 14.5 ft3, 615.3 lb 1500 mm (59 in) 59.1 in, 18.4 ft3, 761.9 lb |
| Nordic Trenching Buckets | 400 mm (16 in) 15.7 in, 7.8 ft3, 370.4 lb 400 mm (16 in) 15.7 in, 7.8 ft3, 383.6 lb |
| Nordic Grading Buckets | 1300 mm (51 in) 14.1 ft3, 582 lb 1300 mm (51 in) 14.1 ft3, 595.2 lb 1300 mm (51 in) 14.1 ft3, 637.1 lb |
CAT 308 CR Attachments
| Type | Model / Specs |
|---|---|
| Augers | A68, 5 Ton 5034.6 lb/ft Gerotor Motor – Double Planetary Reduction |
| Compaction Wheels | 305 mm (12 in) 7-8 Ton, Pin On 12 in, 2 457 mm (18 in) 7-8 Ton, Pin On 17.7 in, 3 610 mm (24 in) 7-8 Ton, Pin On 21.9 in, 3 914 mm (36 in) 7-8 Ton, Pin On 34.8 in, 5 305 mm (12 in) 1 Ton, 1/4 Yard Pin Lock 11.3 in, 2 457 mm (18 in) 1 Ton, 1/4 Yard Pin Lock 17.3 in, 3 610 mm (24 in) 1 Ton 1/4 Yard Pin Lock 22 in, 3 |
| Contractors’ Grapples | G108 Stiff link, 69.5 in, 815.7 lb |
| Dual Lock Pin Grabber Couplers | Manual Pin Grabber Coupler 196.2 lb, 11.5 in, 23.3 in Hydraulic Pin Grabber Coupler 211.6 lb, 14.6 in, 23.4 in |
| Flail Mowers | HMF210 39.4 in, Standard Flow, 46.6 in |
| Hammers | B9 1166.2 lb, 958.8 ft·lbf B9s 1142 lb, 958.8 ft·lbf B8s 758.4 lb, 848.2 ft·lbf H95s 1382.3 lb, 1500.2 ft·lbf B8 771 lb, 848.2 ft·lbf B6s 610.7 lb, 501.5 ft·lbf B6 571 lb, 501.5 ft·lbf |
| Mobile Scrap & Demolition Shears | S308 385 kN, 360 Degrees, 9.4 in |
| Mulchers | HM208 40.4 in, 32.2 in, 28.1 in HM210 48.3 in, 39.8 in, 28.1 in |
| Pallet Fork Carriages | 1300 mm (51 in) 21.7 in, 51 in, 51.7 in |
| Pro Series Hydraulic Thumbs | 671 mm (26 in), 4 Teeth / 2 Tines, 26.4 in, 17.7 in 858 mm (34 in) 6 Teeth / 2 Tines, 33.8 in, 17.7 in |
| S Type Couplers | S-50 Pin Grabber 8 Ton Mini Excavators, 196.9 lb, 6613.9 lb, 13.5 in S-50 Pin Grabber LCS 8 Ton Mini Excavators, 196.9 lb, 6613.9 lb, 13.5 in |
| Single Shank Rippers | 861 mm (34 in) 235.9 lb, 42 in |
| Skid Steer Adapters | Skid Steer Adapter 310.9 lb, 44.3 in, 19.9 in |
| Tilting Dual Lock Pin Grabber Couplers | Tilting Dual Lock Pin Grabber 448.2 lb, 14.6 in, 24.5 in |
Operator Environment
| ROPS | ISO 12117-2:2008 |
| Top Guard | ISO 10262:1998 (Level I) |
| Air Conditioning | HVAC with Automatic Temperature Control |
| Average Exterior Sound Pressure | 99 dB(A) ISO 6395:2008 |
| Operator Sound Pressure | 72 dB(A) ISO 6396:2008 |
| Emergency Exit | Rear Window Emergency Exit |
CAT 308 CR Lift Capacity
The Caterpillar 308 CR Mini Hydraulic Excavator offers impressive lifting capabilities for its class. Lift capacity varies based on factors such as stick length, boom configuration, blade position, lift height, and radius. Minimum Weight includes rubber belts, cab, operator, full fuel tank, no counterweight and no bucket. Maximum Weight includes steel tracks with pads, cab, operator, full fuel tank, counterweight 1103 lb (500 kg) and no bucket.
*The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart.
Lifting over the side typically offers less capacity than over the front due to stability considerations. Using the blade down position enhances stability and increases lift capacity. The use of a long stick or additional counterweights can affect lifting capacities.
