308E Mini Hydraulic Excavator Engine Weights Engine Model Cat C3.3 DI Turbo Operating Weight Standard Stick 7160 kg Net Power @ 2,400 rpm 46.8 kw Operating Weight Long Stick 7190 kg Gross Power @ 2,000 rpm 49.7 kw Operating Weight Standard Stick with Blade 7720 kg Bucket Operating Weight Long Stick with Blade 7760 kg Bucket Size Standard Stick 0.38 m 3 Bucket Size Long Stick 0.31 m 3
308E Features High Performance Lower fuel consumption and higher fuel efficiency keeps you working all day. Standard/Power dual mode offers the choice of lower fuel consumption or superior productivity. Smooth new intuitive flow sharing High Definition Hydraulic system provides the level of control demanded in any application. High Altitude and Cold Start Capability The 308E is equipped with the new Cat C3.3 DI Turbo engine with altitude capability to 2500 m and cold start capacity as low as 15.7 degrees. Versatility Optional long stick provides even greater reach. Contents Performance...4 Undercarriage...5 Operator Comfort...6 Monitoring System...6 Engine...7 Serviceability and Customer Support...8 Specifications...10 Standard Equipment...12 Optional Equipment...13 Notes...14 2
The Cat 308E Mini Hydraulic Excavator delivers superior performance and comfort while reducing your fuel consumption and operating costs. The large spacious cab provides a comfortable work area. Intuitive seat-mounted controls are easy to use for greater job accuracy and efficiency. The standard tail swing design incorporates a counterweight that extends further back on the machine. This provides leverage to create a stable work platform during lifting and digging. The 308E sets the standard for conventional tail swing excavators in the eight-ton size class. 3
Performance Powerful digging combined with smooth control. Hydraulics Smooth responsive hydraulics give the level of control demanded by the customer in any application, from fine grading and dozing to backfilling. Powerful bucket and stick digging forces combined with fast cycle times result in world class productivity and performance. Two speed function improves job site maneuverability and can be selected by an easily accessible foot switch on the control console. Dozer blade float function enables easy ground leveling for landscaping and finish grade applications as well as more efficient job site clean-up. Lift Capacity The new Cat E Series has industry leading lift capacity matched with outstanding stability. This provides the control required to meet the diverse and continually changing needs of the customer. Long Stick Option An optional long stick is available for the 308E for greater reach in ditch clearing, truck loading and other applications. 4
Steel Track The standard 450 mm triple grouser steel tracks provide optimum stability when lifting over the side, in demolition and heavy duty applications. Optional Dozer with Float Function The dozer function is pilot controlled from inside the cab, providing smooth, proportional operation. The dozer float function is enabled by pushing the lever fully forward into the decent position. Site clean up and backfilling are easier as the operator does not have to adjust the blade height during travel. Undercarriage Excellent stability. 5
Operator Comfort Simple, easy operation allows the operator to focus on production. Operator Station The operator environment provides the operator with a larger cab and more ingress and egress room. The clear flat floor space allows the operator plenty of leg room. An intuitive cab layout with ergonomic joysticks, standard spring suspension seat and clear display panel makes for ease of operation allowing the operator to focus on production. Monitoring System Maintenance and performance The new monitoring control panel on the E Series was specifically designed by Caterpillar for compact excavators. This system helps you easily keep track of various maintenance and performance parameters of the machine. Maintenance and performance information are all standard on the 308E. Performance Maintenance Menu The Performance menu allows the operator to view measurements of various system components. Maintenance Information Menu The Maintenance Info menu allows the operator to view the current hours of use and the recommended change intervals for various system components. 6
Engine Clean, quiet and efficient Efficient Engine and Load Sensing Hydraulics The 308E uses a fuel efficient Cat C3.3 DI engine with a net power rating of 46.8 kw. It features a powerful load-sensing hydraulic system with standard auxiliary hydraulic valve section to provide excellent digging performance and smooth control. Low noise and vibration levels deliver comfortable operation. The C3.3 engine features a new direct injection fuel system that delivers optimum fuel efficiency. Cold Start Capability Cat C3.3 DI engine is equipped with cold start capacity as low as 15.7 degrees. One Side Maintenance The Cat C3.3 engine offers superior maintenance convenience with its large steel rear door and two large side doors for easy access to all major components and service points. High Ambient Cooling A high ambient temperature cooling system is standard and features stacked coolers for a compact design. 7
Serviceability and Customer Support Easy access and minimal maintenance requirements keep you working. 8
Excellent Service Access and One Side Maintenance Engine Daily checks and regular service points including fuel and hydraulic oil fill are easily reached via the large steel rear door and two large side doors. The main hydraulic valve and lines are also easily reached through a removable floor plate and side panels. The new Cat C3.3 engine features one side maintenance to offer superior maintenance convenience. The machine has durable steel body panels all around, offering good resistance to impact damage and helping to maintain the machine s appearance and value. S O S SM oil sampling valve allows easy sampling of the hydraulic fluid for preventative maintenance. Customer Support Unmatched Support Makes the Difference Your Cat dealer is ready to assist you with your purchase decision and everything after. Financing packages are flexible to meet your needs Unmatched parts availability keeps you working Make comparisons of machines, with estimates of component life, preventative maintenance and cost of production For more information on Cat products, dealer services and industry solutions, visit www.cat.com 9
308E Mini Hydraulic Excavator Specifications Engine Travel System Engine Model Cat C3.3 DI Turbo Travel Speed High 5.1 km/h Net Power @ 2,400 rpm 46.8 kw Travel Speed Low 3.2 km/h Gross Power @ 2,000 rpm 49.7 kw Maximum Drawbar Pull 56.9 kn Meets U.S. EPA Interim Tier 2 emission requirements. Gradeability (maximum) High 30 Degrees Net power rating per ISO 9249 and SAE J1349. Gross power rating per SAE J1995. Weights Operating Weight with Standard Stick* Operating Weight with Standard Stick and Blade* 7160 kg 7720 kg Electrical System Type 60-amp alternator. 12-volt, heavy-duty batteries. Service Refill Capacities Operating Weight with Long Stick** 7190 kg Cooling System 12.1 L Operating Weight with Long Stick 7760 kg Engine Oil 11.2 L and Blade** Fuel Tank 135 L ** Weight with cab, 3.7 m boom, 1.82 m stick, 0.38 m 3 bucket (945 mm width) and 450 mm shoes. Hydraulic Tank 51 L ** Weight with cab, 3.7 m boom, 2.21 m stick, 0.31 m 3 bucket Hydraulic System 94 L (820 mm width) and 450 mm shoes. Front Engine Dimensions Boom Length 3700 mm Bore 94 mm Standard Stick Length 1820 mm Stroke 120 mm Long Stick Length 2210 mm Displacement 3.3 L Swing System Blade Width 2300 mm Machine Swing Speed 10.8 min -1 Height 450 mm Swing Torque 16.3 kn m Dig Depth 350 mm Lift Height 390 mm Hydraulic System Track Load Sensing Hydraulics with Variable Displacement Piston Pump Pump Flow at 2,000 rpm 147 L/min Track Shoe Width (standard) 450 mm Operating Pressure Equipment 28 000 kpa Track Length 2910 mm Operating Pressure Travel 28 000 kpa Ground Pressure 30.5 kpa Operating Pressure Swing 24 000 kpa Number of Track Rollers (each side) 5 Digging Force Stick (standard) 38.9 kn Number of Carrier Rollers (each side) 1 Digging Force Bucket 57.1 kn 10
308E Mini Hydraulic Excavator Specifications Dimensions 8 5 6 17 11 12 9 7 2 18 10 13 14 1 16 15 3 4 Stick Standard Long Stick Standard Long 1 Maximum Digging Depth 4210 mm 4600 mm 10 Blade Down 350 mm 2 Length of Track on Ground 2280 mm 11 Cab Height 2560 mm 3 Maximum Reach at Ground Line 6290 mm 6660 mm 12 Ground Clearance, Counterweight 750 mm 4 Maximum Reach of Working Range 6420 mm 6780 mm 13 Track Length 2910 mm 5 Maximum Cutting Height 7330 mm 7610 mm 14 Shipping Length 6080 mm 6030 mm 6 Maximum Dump Height 5300 mm 5590 mm 15 Track Shoe Width 450 mm 7 Ground Clearance, Frame 370 mm 16 Shipping Width 2320 mm 2320 mm 8 Tail Swing Radius 1750 mm 1750 mm 17 Shipping Height 2700 mm 3100 mm 9 Blade Up 390 mm 18 Blade Height 450 mm Lift Capacities at Ground Level* Lift Point Radius 3000 mm Maximum Radius Lift Point Height Front Side Front Side Ground Line kg 3100 2400 1100 900 3.0 m kg 2100 2100 1600 1600 *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 capacities are for standard stick. 11
308E Standard Equipment Standard Equipment Standard equipment may vary. Consult your Cat dealer for details. Diesel engine, C3.3 with electrical governor Two speed travel with manual shift Cat one key security system Door locks and cap locks Signaling/warning horn GPS ready Muffler with cover Radial seal air filter, double element Stacked cooling package Auxiliary hydraulic valve (one) Straight line travel Accumulator Cab: Operable front windshield with assist device Removable lower windshield with in cab storage bracket Windshield wiper and washer Interior lighting Coat hook Ashtray Radio mounting (meet DIN size) Two stereo speakers Antenna Cup holder Storage pocket Mounting for front and top guard (mounting boss) Color LCD monitor Hour meter Retractable seat belt (50 mm width) Hydraulic activation control lever (lock out) for all controls Two travel control hand levers Capability to install one additional pedal for auxiliary hydraulic control Seat with suspension 450 mm triple grouser track shoes with holes (for rubber pad) Towing eye on base frame Rearview mirror, mounted on right hand side of upper frame 12
308E Optional Equipment Optional Equipment Optional equipment may vary. Consult your Cat dealer for details. Blade Lines Group PTO, auxiliary hydraulic Cab front guard Long stick lines from boom foot to stick, stop valves Drain-oil pan (ecology) Lighting cab Travel alarm Heater, water jacket Control PTO, auxiliary hydraulic lines Heavy duty swivel guard from main auxiliary valve to boom foot plus auxiliary control pedal 13
For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com AEHQ7268 (05-2014) (GN1) 2014 Caterpillar All rights reserved Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Cat dealer for available options. CAT, CATERPILLAR, SAFETY.CAT.COM, their respective logos, Caterpillar Yellow and the Power Edge trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.
Cat 308E2 CR SB MINI HYDRAULIC EXCAVATOR WITH SWING BOOM Specifications Engine Engine Model Cat C3.3B* Rated Net Power @ 2,400 rpm ISO 9249/EEC 80/1269 48.5 kw 65 hp Gross Power ISO 14396 49.7 kw 66.6 hp Bore 94 mm 3.7 in Stroke 120 mm 4.7 in Displacement 3.33 L 203.2 in 3 *Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards. Weights Operating Weight with Cab 8400 kg 18,519 lb Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines. Weight varies depending on machine configuration. Swing System Machine Swing Speed 11 rpm Boom Swing Left 60 Boom Swing Right 50 Automatic swing break, spring applied, hydraulic release. Travel System Travel Speed High 5.1 km/h 3.17 mph Low 2.8 km/h 1.74 mph Maximum Traction Force High Speed 64.5 kn 14,500 lb Low Speed 37.4 kn 8,408 lb Gradeability (maximum) 30 Ground Pressure 36.3 kpa 5.26 psi Each track is driven by one independent 2-speed motor. Drive modules are integrated into the roller frame for total protection. Straight line travel when tracking and operating the front linkage simultaneously. Service Refill Capacities Fuel Tank 125 L 33 gal Cooling System 14 L 3.7 gal Engine Oil 11.2 L 3.0 gal Hydraulic Tank 82 L 21.7 gal Hydraulic System 94 L 24.8 gal Hydraulic System Pump Flow at 2,000 rpm 150 L/min 39.6 gal/min Operating Pressure Equipment 28 000 kpa 4,061 psi Operating Pressure Travel 28 000 kpa 4,061 psi Operating Pressure Swing 24 000 kpa 3,481 psi Auxiliary Circuit Primary (186 bar/2,734 psi) 128 L/min 33.8 gal/min Auxiliary Circuit Secondary (174 bar/2,524 psi) 64 L/min 16.9 gal/min Digging Force Stick (standard) 40.1 kn 9,015 lb Digging Force Stick (long) 35.1 kn 7,891 lb Digging Force Bucket 60.2 kn 13,534 lb Load sensing hydraulics with variable displacement piston pump. Blade Width 2320 mm 91.3 in Height 450 mm 17.7 in Dig Depth 360 mm 14.2 in Lift Height 380 mm 15.0 in Cab Dynamic Operator Sound Pressure 70 db(a) ISO 6396 Average Exterior Sound Pressure 99 db(a) ISO 6395 Dynamic Test Operating Specifications Stick Length Standard 1670 mm 5 ft 6 in Stick Length Long 2210 mm 7 ft 3 in Machine Overhang 279.4 mm 11 in Machine Overhang with Counterweight 406 mm 16 in Counterweight 251 kg 551 lb
308E2 CR SB Mini Hydraulic Excavator with Swing Boom 7 8 5 6 11 12 9 10 15 14 13 2 1 16 17 19 18 3 4 Dimensions Standard Stick Long Stick 1 4150 mm 13'7" 4690 mm 15'5" 2 2980 mm 9'9" 3550 mm 11'8" 3 6820 mm 22'9" 7350 mm 24'1" 4 7020 mm 23'0" 7540 mm 24'9" 5 6640 mm 21'9" 6990 mm 22'11" 6 4670 mm 15'4" 5010 mm 16'5" 7 2800 mm 9'2" 3280 mm 10'9" 8 1450 mm 4'9" 1450 mm 4'9" 9 420 mm 1'5" 420 mm 1'5" 10 320 mm 1'1" 320 mm 1'1" Standard Stick Long Stick 11 2280 mm 7'6" 2230 mm 7'4" 12 2550 mm 8'4" 2550 mm 8'4" 13 735 mm 2'5" 735 mm 2'5" 14 2903 mm 9'6" 2903 mm 9'6" 15 6380 mm 20'11" 6340 mm 20'10" 16 1010 mm 3'4" 1010 mm 3'4" 17 635 mm 2'1" 635 mm 2'1" 18 450 mm 1'6" 450 mm 1'6" 19 2320 mm 7'7" 2320 mm 7'7" Lift Capacities at Ground Level* Lift Point Radius 4000 mm (13'1") 6050 mm (19'10") Front Side Front Side Blade Down kg 3650 1710 1880 920 lb 8,046 3,770 4,144 2,028 Blade Up kg 1840 1530 970 820 lb 4,056 3,373 2,138 1,808 * The above loads are consistent 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 capacities are for standard stick. 2
308E2 CR SB Mini Hydraulic Excavator with Swing Boom STANDARD EQUIPMENT 1-way and 2-way (combined function) auxiliary hydraulic lines Adjustable auxiliary flow control for work tools Adjustable wrist rests Air suspension, heated seat Alternator Anti-theft security system Automatic engine idle Automatic swing park brake Automatic two speed travel Auxiliary line quick disconnects Cab mounted work light Cab, ROPS ISO 12117-2 with radio ready mounting, A/C, heater/ defroster, interior light and windshield wiper/washer Coat hook COMPASS display panel Cup holder Control pattern changer (not available in Europe) Continuous flow Dozer blade with float function Eco mode setting for up to 20% fuel savings Floor mat Foot travel pedals High ambient cooling (standard in all regions except Europe) Horn Hydraulic oil cooler Lifting bar on bucket linkage (standard in U.S. only) Low maintenance linkage pin joints Maintenance free battery Rearview mirror Retractable seatbelt Standard stick Thumb ready sticks (standard equipment for all regions except Europe) Travel alarm (optional in Europe) OPTIONAL EQUIPMENT AM/FM radio with auxiliary input (optional in Europe, standard for all other regions) Block heater Boom and stick check valve Boom mounted light right side Dozer blade with bolt on cutting edge Dual lock hydraulic coupler (available from dealer) Dual lock mechanical coupler (available from dealer) Ecology drain valve for hydraulic tank Extra counterweight for extreme lifting applications 251 kg (553 lb) Footrest Front window mesh guard Front window steel bar guard Hydraulic quick coupler lines Lifting eye on bucket linkage (optional in all regions except the U.S.) Overhead guard (TOPGUARD Level 2) Rain guard Secondary auxiliary hydraulic lines Standard or long stick Track options: Rubber belt 450 mm (18 in) Steel track 450 mm (18 in) Steel track 600 mm (24 in) Steel track with rubber pads 450 mm (18 in) 3
308E2 CR SB Mini Hydraulic Excavator with Swing Boom For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com 2013 Caterpillar Inc. All Rights Reserved Printed in U.S.A. Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Cat dealer for available options. CAT, CATERPILLAR, SAFETY.CAT.COM, their respective logos, Caterpillar Yellow and the Power Edge trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission. AEHQ7043 (04-13)