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307D
Mini Hydraulic Excavator
Engine
Engine Model MMC 4M40-TL
Net Power 41.5 kW 55.6 hp
Gross Power 43 kW 57.6 hp
Weights
Operating Weight 7075 kg 15,598 lb
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307D
Features
Comfortable Cab
Intuitive seat-mounted controls and a
spacious cab with an air suspension seat
keep you comfortable all day.
Versatility
Machine is configured to operate with a
wide selection of Cat® Work Tools increasing
jobsite versatility.
Performance
High digging forces and fast cycle times
maximize productivity without compromising
controllability.
Stability
Conventional tail swing design with extended
counterweight provides excellent stability
while maximizing lifting.
Contents
Operator Station . . . . . . . . . . . . . . . . . . . . .3
Performance . . . . . . . . . . . . . . . . . . . . . . . .4
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Work Tools . . . . . . . . . . . . . . . . . . . . . . . . . .5
Undercarriage . . . . . . . . . . . . . . . . . . . . . . .6
Serviceability. . . . . . . . . . . . . . . . . . . . . . . .7
Customer Support. . . . . . . . . . . . . . . . . . . .7
307D Specifications . . . . . . . . . . . . . . . . . .8
307D Standard and
Optional Equipment . . . . . . . . . . . . . . . . .11
2
The Cat 307D Mini Hydraulic Excavator delivers superior
performance and comfort while reducing your 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 307D sets the standard for conventional
tail swing excavators in the eight-ton size class.
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Operator Station
Simple, easy operation allows the operator to focus on production.
A larger, spacious cab provides operator comfort and improved
visibility. Joystick controlled auxiliary switch clears space
on the fl oor giving the operator plenty of foot and leg room.
An intuitive cab layout for ease of operation reduces operator
fatigue. Other cab features include:
• Air conditioning is standard.
• 12V power receptacle for charging cell phones.
• A reclining air suspension seat with adjustable armrests.
• Storage space for literature and cup holder.
• Low effort joystick controls designed to match the operator’s
natural wrist and arm positions.
• Consoles can be adjusted independently of the seat for
maximum comfort.
• Overhead skylight improves visibility and can be opened
to create air fl ow.
• Upper front windshield opens and easily stores on the roof
above the operator with an automatic latching mechanism.
• All functions are fully pilot operated lowering owning and
operating costs.
• Pattern control changer is located under the fl oor mat.
Monitor Display
Newly designed monitor is located to give a clear view of
the machine’s monitoring system, ensuring fuel level, water
temperature and warning lights are easily seen.
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Page 4
Performance
Powerful digging with precise control.
Hydraulics
Smooth responsive hydraulics give the level of control demanded by the
customer in any application, from fi ne grading and dozing to backfi lling.
Powerful bucket and stick digging forces combined with fast cycle times result
in world class productivity and performance. Automatic two speed function
improves jobsite maneuverability with precise control by balancing travel
speed with the torque needed for turning and travelling on inclines. Dozer blade
fl oat function enables easy ground levelling for landscaping and fi nish grade
applications as well as more effi cient jobsite clean-up.
Controls
Joystick mounted auxiliary control enhances machine controllability. Intuitive
controls give fi ne modulation. The levers and dozer function ensure “as new”
levels of controllability are maintained throughout the machine life.
Lift Capacity
The new Caterpillar D-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.
Stick and Boom
A choice of standard or long, thumb ready sticks enable the customer to match
the machine’s digging envelope to their requirements. A fi xed boom is featured
to maximize stability and lifting.
Engine
Clean, quiet and effi cient.
• Interim Tier 4 turbocharged engine
gives higher power and maintains strong
performance at high altitude.
• High digging forces give power through
even the most compacted ground with
smooth control and responsive hydraulics
that deliver productivity that our customers
demand.
• Load sensing hydraulics optimize the fl ow
of oil for smooth powerful performance
and increased fuel economy.
• Automatic engine idle lowers engine
revolutions when not in use to conserve fuel
and lower environmental noise/emissions.
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Work Tools
Cat work tools are matched to meet your application needs.
A wide range of work tools have been developed and integrated
into the machine design to maximize machine performance and
deliver excellent value through high productivity and long life.
Cat Work Tools include:
• Heavy Duty Buckets • Shear
• Heavy Duty Rock Buckets • Compactor
• Ditch Cleaning Buckets • Thumbs
• Hydraulic Hammers • Quick Couplers
• Auger
Couplers
To maximize performance, Caterpillar Pin-Grabber Quick
Couplers are compatible with all standard work tools, enabling
the operator to simply release one work tool and pick up another,
maximizing productivity. The couplers are available in hydraulic
and manual versions.
Auxiliary Hydraulics
The combined function high-pressure auxiliary lines and quick
connectors are fi tted as standard. This auxiliary system includes a
diverter valve which provides optimum performance when using
a one-way fl ow (hammer) or two-way fl ow (auger and thumb)
work tool. This feature allows the machine to adapt to a wide
variety of applications without re-confi guring the auxiliary lines.
Versatility is further enhanced with optional hydraulic lines enabling
the use of a hydraulic quick coupler. A secondary auxiliary supply
circuit for work tools utilizing a rotating or other medium-pressure
circuit is also available as an optional attachment.
Thumbs
Caterpillar offers three varieties of thumbs: Stiff Link, Hydraulic
and Progressive Link. The stiff link thumb incorporates the use of
a fi xed link between the thumb and the stick, requiring bucket curl
to secure the load. The hydraulic thumb replaces the stiff link with
a cylinder that enables movement by both the thumb link and the
bucket to grab an object. A progressive link thumb works much
like a hydraulic thumb with more thumb rotation by incorporating
an additional link. This additional rotation provides a better working
range when securing material. The three varieties come with two
lengths, one compatible with a pin-on bucket and one compatible
with a pin-grabber coupler.
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Page 6
Undercarriage
Excellent stability.
The Cat 307D offers three different track options to choose from
allowing the correct machine confi guration to suit the job.
Steel Track
The standard track offering is a 450 mm (18 in) triple grouser
track. Grease-lubricated track links, split master link and sealed
track rollers reduce owning and operating costs. Steel tracks
provide optimum stability when lifting over the side. This track
is also offered in a 600 mm (24 in) width that provides additional
stability and reduced ground pressure.
Segmented Rubber Track
The 450 mm (18 in) wide segmented rubber track incorporates
the best attributes of both the steel track and the rubber belt.
Stability is maximized due to the rigid rubber pads that bolt to
the track chain. The thick rubber pads are individually serviceable,
minimizing work site damage and provide long wear life.
Rubber Pads
Offered through the dealer parts system, the 450 mm (18 in)
wide shoe has four holes that attach rubber pads to the track.
This option will prevent damage to paved road surfaces
minimizing noise and vibration during travel with a standard
steel track system.
Blade Widths
The dozer blade is an important tool used for backfi lling trenches,
levelling, landscaping, lifting and jobsite clean-up. There are
two blade options available. The standard 2320 mm (91 in)
blade comes with a replaceable weld-on dozer wear edge and
the optional 2470 mm (97 in) blade comes with a replaceable
bolt-on dozer wear edge. Both blades are constructed of
hardened steel for longer life and extreme dozing ability.
Tie-down Points
Tie-down points are located on the blade and undercarriage
for easy and safe machine tie down for transportation.
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Serviceability
Easy access and minimal maintenance requirements
keep your machine on the job.
Robust, reliable and easily serviceable are the key attributes
of Cat® Mini Hydraulic Excavators. Full steel body work
panels and protected front linkage lines are routed neatly out
of the way of potential damage above the boom. Easy access
to all daily service points are accessed through the rear hood
and side cover. A 500 hour engine oil change period lowers
operating costs and the Cat S•O•SSM points assist easy oil
sampling for preventative maintenance checks.
Product Link
The optional Product Link system simplifi es equipment fl eet
tracking. Using satellite or cellular technology, the system
automatically reports information such as location, machine
hours, active and logged service codes and security alarms.
Machine Security System
An optional Machine Security System (MSS) that utilizes
a programmable key system deters theft, vandalism and
unauthorized usage. MSS uses electronically coded keys
selected by the customer to limit usage by individuals
or time parameters.
Customer Support
Unmatched support makes
the difference.
Your Cat dealer is ready to assist you with your purchase
decision and everything after.
• Make comparisons of machines, with estimates of component
life, preventative maintenance and cost of production.
• Financing packages are fl exible to meet your needs.
• Your Cat dealer can evaluate the cost to repair, rebuild and
replace your machine, so you can make the right choice.
• A worldwide computer network enables the dealer parts
counter to locate nearly all parts.
• For more information on Cat products, dealer services and
industry solutions, visit us at www.cat.com.
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307D Specifications
Engine
Engine Mitsubishi 4M40 TL
Net power 41.5 kW 55.6 hp
Gross power 43 kW 57.6 hp
Meets U.S. EPA Interim Tier 4 emission
•
requirements
Net power rating per ISO 9249 and
•
EEC 80/1269
Weights
Operating weight
with cab
Weight varies depending on machine
•
confi guration
Weight with counterweight, rubber tracks,
•
bucket, operator, full fuel and auxiliary lines
7075 kg 15,598 lb
Engine Dimensions
Bore 95 mm 3.7 in
Stroke 100 mm 3.9 in
Displacement 2.83 L 173 in
3
Hydraulic System
Operating pressures
– equipment
Operating pressure
– travel
Operating pressure
– swing
Auxiliary circuit
– primary
Auxiliary circuit
– secondary
Digging force
– stick (standard)
Digging force
– bucket
280 bar 4,061 psi
320 bar 4,641 psi
240 bar 3,481 psi
128 L/min 33.8 gal/min
64 L/min 16.9 gal/min
36.2 kN 8,138 lb
49.2 kN 11,061 lb
Swing System
Machine swing speed 10 rpm
Centralized lubrication
•
Automatic swing brake, spring applied,
•
hydraulic release
Electrical System
Type
35-amp alternator
•
24-volt, Heavy Duty Batteries
•
Sealed electrical connectors
•
Service Refi ll Capacities
Cooling system 15.7 L 4.1 gal
Engine oil 12.5 L 3.3 gal
Fuel tank 135 L 35.7 gal
Hydraulic tank 80 L 21.1 gal
Hydraulic system 94 L 24.8 gal
Travel System
Travel speed – high 5 km/h 3.1 mph
Travel speed – low 3.1 km/h 1.9 mph
Max traction force 56.7 kN 12,747 lb
Gradeability (max)
– high
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
35 Degrees
Sound Levels
Exterior Cab 98 dB(A)
Interior Cab 79 dB(A)
Operator sound pressure levels measured per
•
ISO 6396 (dynamic)
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Dimensions
5
6
7 8
20
2
1
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Note: All working dimensions are with OSJ bucket.
Without shoe lug.
18
9
10
19
13
14
21
Standard Stick Long Stick
4050 mm 13'3" 4600 mm 15'1"
3640 mm 11'11" 4170 mm 13'8"
6150 mm 20'2" 6670 mm 21'11"
6290 mm 20'8" 6790 mm 22'3"
7230 mm 23'9" 7640 mm 25'1"
5210 mm 17'1" 5610 mm 18'5"
1670 mm 5'6" 2230 mm 7'4"
1750 mm 5'9" 1750 mm 5'9"
380 mm 1'3" 380 mm 1'3"
360 mm 1'2" 360 mm 1'2"
2630 mm 8'8" 2630 mm 8'8"
760 mm 2'6" 760 mm 2'6"
2760 mm 9'1" 2760 mm 9'1"
5700 mm 18'8" 5730 mm 18'10"
450 mm 1'6" 450 mm 1'6"
2290 mm 7'6" 2290 mm 7'6"
1790 mm 5'10" 1790 mm 5'10"
2630 mm 8'8" 2725 mm 8'11"
450 mm 1'6" 450 mm 1'6"
180° 180°
605 mm 2'0" 605 mm 2'0"
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17
12
16
15
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307D Specifications
Lift Capacities
STICK – Standard SHOES – 450 mm (18") BLADE – Down
2.0 m (6.56 ft) 3.0 m (9.84 ft) 4.0 m (13.12 ft)
Front Side
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
STICK – Standard SHOES – 600 mm (24") BLADE – Down
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
STICK – Long SHOES – 450 mm (18") BLADE – Down
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3300 kg*
7,275 lb*
2600 kg*
5,732 lb*
3100 kg*
6,834 lb*
3300 kg*
7,275 lb*
2600 kg*
5,732 lb*
3100 kg*
6,834 lb*
4000 kg*
8,818 lb*
3300 kg*
7,275 lb*
2600 kg*
5,732 lb*
3100 kg*
6,834 lb*
3300 kg*
7,275 lb*
2600 kg*
5,732 lb*
3100 kg*
6,834 lb*
4000 kg*
8,818 lb*
2500 kg*
5,512 lb*
3800 kg*
8,378 lb*
2150 kg*
4,740 lb*
2500 kg*
5,512 lb*
3800 kg*
8,378 lb*
2150 kg*
4,740 lb*
2050 kg*
4,519 lb*
3650 kg*
8,047 lb*
2800 kg*
6,173 lb*
2500 kg*
5,512 lb*
2600 kg
5,732 lb
2150 kg*
4,740 lb*
2500 kg*
5,512 lb*
2700 kg
5,952 lb
2150 kg*
4,740 lb*
2050 kg*
4,519 lb*
2550 kg
5,622 lb
2550 kg
5,622 lb
2150 kg*
4,740 lb*
2800 kg*
6,173 lb*
2150 kg*
4,740 lb*
2800 kg*
6,173 lb*
1850 kg*
4,079 lb*
2700 kg*
5,952 lb*
1850 kg
4,079 lb
1650 kg
3,638 lb
1950 kg
4,299 lb
1750 kg
3,858 lb
1850 kg*
4,079 lb*
1650 kg
3,638 lb
650 kg*
1,433 lb*
800 kg*
1,764 lb*
1850 kg*
4,079 lb*
650 kg*
1,433 lb*
800 kg*
1,764 lb*
1850 kg*
4,079 lb*
700 kg*
1,543 lb*
850 kg*
1,874 lb*
1300 kg*
2,866 lb*
Max Load Radius
650 kg*
1,433 lb*
800 kg*
1,764 lb*
1850 kg*
4,079 lb*
650 kg*
1,433 lb*
800 kg*
1,764 lb*
1850 kg*
4,079 lb*
700 kg*
1,543 lb*
800 kg
1,764 lb
1300 kg*
2,866 lb*
Maximum
ReachFront Side Front Side Front Side
5.88 m
19.29 ft
5.74 m
18.83 ft
3.26 m
10.70 ft
5.88 m
19.29 ft
5.74 m
18.83 ft
3.26 m
10.70 ft
6.40 m
21.00 ft
6.27 m
20.57 ft
3.97 m
13.02 ft
STICK – Long SHOES – 600 mm (24") BLADE – Down
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
* Limited by hydraulic capacity rather than tipping load.
The above loads are in compliance with hydraulic excavator lift capacity rating standard SAE J1097 DEC2005 and do exceed 87% of hydraulic lifting capacity or 75%
of tipping load.
Weight of all lifting accessories must be deducted from the above lifting capacities.
Lifting capacities are based on the machine standing on a firm, uniform supporting surface.
4000 kg*
8,818 lb*
4000 kg*
8,818 lb*
2050 kg*
4,519 lb*
3650 kg*
8,047 lb*
2800 kg*
6,173 lb*
2050 kg*
4,519 lb*
2700 kg
5,952 lb
2700 kg
5,952 lb
1850 kg*
4,079 lb*
2700 kg*
5,952 lb*
1300 kg*
1850 kg*
4,079 lb*
1750 kg
3,858 lb
700 kg*
1,543 lb*
850 kg*
1,874 lb*
2,866 lb*
700 kg*
1,543 lb*
850 kg*
1,874 lb*
1300 kg*
2,866 lb*
6.40 m
21.00 ft
6.27 m
20.57 ft
3.97 m
13.02 ft
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Page 11
Standard equipment may vary. Consult your Caterpillar dealer for details.
307D Standard Equipment
OPERATOR STATION
Cab fully glazed
Interior light
Pillar mounted windshield wiper and washer
Air conditioning, heater and defroster
Bolt-on FOGS capability
Openable upper front windshield
Removable lower front windshield
Openable skylight
Right and rear windows, polycarbonate
Sliding door window, tempered glass
Rear window, emergency exit
Seat, high back suspension, fabric covered,
4 way adjustment
Armrest, adjustable
Seatbelt 75 mm (3 in)
Coat hook
Cup holder
Literature compartment
Floor mat
Mirrors
AM/FM radio
Monitoring system, gauges and indicators
Neutral lever hydraulic lockout
Joystick pilot operated controls
Auxiliary control, joystick
(proportional control)
Travel control pedals with hand levers
Power supply, 12V
Dial type accelerator
Work light, cab-mounted
Cat HD batteries, (cold weather start)
Alternator 35 amp
Warning horn
24-volt electric starting
HYDRAULICS and POWER TRAIN
MMC 4M40-TL Diesel Engine
Certified to meet U.S. EPA Interim Tier 4
Extended life coolant –37° C (–34° F)
Variable displacement load sense hydraulics
Combined function auxiliary hydraulic circuit
Quick disconnect fittings
Automatic swing parking brake
Control pattern changer
Travel alarm
Straight line travel
Boom check valve
Two speed auto-shift travel
Automatic engine idle
Boom lowering device (accumulator)
Reverse swing damping valve
1500 m (5,000 ft) altitude capability
UNDERCARRIAGE, BLADE and TRACK
Steel tracks, 450 mm (18 in)
Dozer blade with float function
Blade, weld on cutting edge
Grease lubricated track seals
Idler end track guiding guards
Hydraulic track adjusters
OTHER
Caterpillar Corporate “One Key” System
Fuel cap, lockable
Doors, lockable
Stick, standard, thumb ready
Bucket linkage with lifting eye
Additional counterweight
Toolbox
Antenna
Pictograph films
Optional equipment may vary. Consult your Caterpillar dealer for details.
OPERATOR STATION
Headrest for KAB 528P/C, T8P/C
Cab fan
Sun visor
Light, boom-mounted
HYDRAULICS and POWER TRAIN
Cooling package, high ambient
Starting kit, cold weather
Coolant, extended life –50° C (–58° F)
Medium pressure auxiliary lines
Hydraulic quick coupler lines
UNDERCARRIAGE, BLADE and TRACK
Segmented rubber track, 450 mm (18 in)
Bolt on rubber pads
Steel tracks, 600 mm (24 in)
Blade, bolt on cutting edge
OTHER
Stick, long
Guard – Front screen cab and canopy
Guard – Vandalism
Guard – Falling objects
Guard – Swivel
Rain protector, cab front
307D Optional Equipment
WORK TOOLS
Quick Couplers: Mechanical, Hydraulic,
Pin Lock and Wedge Style
Buckets: Heavy Duty, Heavy Duty Rock,
Ditch Cleaning and Pin Lock
Thumbs: Hydraulic, Full Rotation and
Stiff Link
Auger
Hammer
Shear
Compactor
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307D
For more complete information on Cat products, dealer services, and industry solutions,
visit us on the web at www.cat.com
2008 Caterpillar Inc.
All rights reserved
Printed in the U.S.A.
Materials and specifi cations are subject to change without notice. Featured machines
may include additional equipment. See your Caterpillar 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,
16
are trademarks of Caterpillar and may not be used without permission.
AEHQ5958 (04-2008)
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