Milton CAT 302.7D User Manual

302.7D

Mini Hydraulic Excavator

Engine

Net Power 15.2 kW 20.7 hp
Gross Power 17.9 kW 24.3 hp

Weight

Transport weight 2670 kg 5,890 lb

Compact Dimensions

Reduced damage – Operator condence – Increased productivity

Compact Radius

Congured without the additional
counterweight the 302.7D CR is a
true zero tail swing machine with the
upper body staying within the width
of the undercarriage during rotation.
This enables the operator to work
within conned areas and concentrate
on the work being performed without
having to worry about the back of
themachine.

Transport Weight

The 302.7D CR is designed with a
transport weight below 2.7 tonnes
(6,000 lb) withcab  tted.

This allows lower trailer transportation
costs using a standard passenger vehicle
(subject to national restrictions).

Additional Counterweight

An optional additional weight increases
the machines lifting capability with only
a small addition to the overhang.

An optional additional counterweight
increases the machines lifting
capacitywith only a small addition
tothe overhang.

(This counterweight is tted as standard
for North America and Australia)

2

Performance and Durability

Powerful hydraulics – Robust construction – Work tool ready

Auxiliary Hydraulics as Standard Fit

Machine is ‘ready to work.’ Hammer and two way lines
complete with quick disconnect ttings are standard.
Connections are located close to the tool to reduce
hoselengths and any potential damage.

Additional lines options are available to further increase
machine versatility.

Stick and bucket cylinder hoses are protected by routing
them through the boom.

100% Pilot Controls

Delivers excellent machine control and lifetime ‘as new’
performance eliminating the need for linkage and cable
maintenance.

Automatic Swing Lock

Safe transportation of the machine is aided by the
Catautomatic swing lock which locks the machines
upperbody in place when the control console is raised
ortheengine isstopped.

Thumb Ready Stick (North American Builds)

Machine is congured with brackets and relief valves for
simple and cost effective mounting of a hydraulic thumb.

Dozer Float

Ground levelling and nishing applications are fast and easier
with the dozer oat function engaged making site clean-up
much more ef cient.

3

User Friendly Operation

Comfortable productivity

Cab Comfort

The Cat® 302.7D CR gives the operator a large comfortable
space in which to work. The ergonomic control layout, travel
pedals and adjustable wrist rests are engineered to minimize
operator fatigue and increase productivity.

Simultaneous Operation

Both machine upper body swing and boom offset can be
controlled simultaneously for faster machine positioning
andobject handling.

Adjustable Flow Control

Machines congured with proportional auxiliary hydraulics
include adjustable hydraulic ow control for even greater tool
control. Especially useful with tools such as angling buckets.

Split Front Window

The lower front window section slides into the upper section
frame. Both sections are then raised and stored in the roof
using a gas assisted mechanism.

This allows the operator to position the front window to suit
their visibility and ventilation requirements with easy storage.

4

Serviceability/Maintenance

Easy access for both maintenance and daily inspection

Pivot Bushing

Steel bushings are tted on all front
linkage pivot points including the
swing casting, boom, stick and bucket.
Designed for long life and easy
replacement.

Maintenance Access

Removable covers in the cab and at the
rear of the machine provide easy access
to hydraulic system components.

Side Mounted Engine

All daily service points are easily
accessed through the large side cover.
The engine position also reduces heat
and noise transfer into the operator
station (cab).

5

Customer Support

Low operating costs with excellent services and options

Customer Support

Product supported through the Cat dealer and worldwide
parts network aimed at minimizing downtime.

• Finance options

• Warranty options

• Maintenance contracts

Help and advice in product and option selection tomaximize
efciency and operating pro tability

Work Tools

A range of tools is available to take advantage of the
machines versatility. All tools are matched to the machine
to optimize performance and deliver excellent value through
high productivity and long life.

6

302.7D Specifications

Engine Service Refill Capacities Hydraulic System

Engine Model Yanmar 3TNV76 Fuel Tank Capacity 35.2 L 9.3 gal Pump Flow @

Rated Net Power 15.2 kW 20.7 hp Hydraulic Tank 26.5 L 7 gal
(ISO9249) Capacity Operating Pressure –

Gross Power 17.9 kW 24.3 hp

3

3

Displacement 1115 cm

68 in

Weight

Transport Weight 2670 kg 5,886 lb
withCab

Transport Weight 2577 kg 5,681 lb
withCanopy

Blade

Width 1570 mm 61.9 in

Height 290 mm 11.4 in

Dig Depth 419 mm 16.5 in

Lift Height 380 mm 15 in

Travel System

Travel Speed

Gradeability

2.1 km/h/

3.8 km/h

30°/58%

1.30 mph/

2.36mph

2,500rpm

Equipment

Operating Pressure –
Trave l

Operating Pressure –
Swing

Auxiliary Circuits

Primary 52.2 L/min

Secondary 30.8 L/min

Maximum Bucket 22.5 kN 5,058 lbf
Forc e

Maximum Stick Force 15.4 kN/ 3,462 lbf/
Standard/Long 13.6 kN 3,057 lbf

89.4 23.6
L/min gal

225 bar 3,263 psi

225 bar 3,263 psi

206 bar 2,987 psi

at225bar
(13.8gal/min
at3,263 psi)

at206bar
(8.1 gal/min
at2,988 psi)

Lift Capacity at Ground Level

2.5 m (98.43 in) 3.0 m (118.11 in) 3.5 m (137.80 in) Maximum

Lift Point Radius Front

kg

lb kg lb kg lb kg lb kg lb kg lb kg lb kg lb

Standard Stick 965*

Long Stick and Optional Counterweight 955*

* 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.

2,127 560 1,235 730* 1,609 435 959 585* 1,290 355 783 510* 1,124 320 705

2,105 623 1,373 720* 1,587 483 1,065 580* 1,279 394 869 470* 1,036 332 732

Side Front Side Front Side Front Side

7

302.7D Specifications

Dimensions

All dimensions are approximate

6

7

8

5

4

1

13

16

14

10

15

3

11

12

9

17

Height 2408 mm 7 ft 11 in

1

Width 1570 mm 5 ft 2 in

2

Transport length (arm lowered) 4255 mm 14 ft 0 in

3

Maximum digging depth 2544/2744 mm 8 ft 4 in/9 ft 0 in

4

Maximum vertical dig depth 1962/2152 mm 6 ft 5 in/7 ft 1in

5

Maximum dig height 4170/4300 mm 13 ft 8 in/14 ft 1 in

6

Maximum dump height 2840/2970 mm 9 ft 4 in/9 ft 8 in

7

Maximum reach 4613/4805 mm 15 ft 1 in/15 ft 10 in

8

Maximum reach at ground level 4481/4681 14 ft 8 in/15 ft 5 in

9

Tail swing radius 760 mm 30 in

10

Track width 764 mm 30 in

11

Minimum front linkage swing radius 533 mm 21 in

12

Maximum dozer lift height 380 mm 15 in

13

Maximum dozer dig depth 419 mm 16 in

14

Length of undercarriage 2006 mm 79 in

15

Boom swing angle (Right) 50°

16

Boom swing angle (Left) 75°

17

2

8

Standard equipment may vary. Consult your Cat dealer for details.

Standard Equipment

300 mm rubber track Working light mounted to boom Suspension seat, vinyl covered
1-way and 2-way (combined function) Canopy with TipOver Protection (TOPS) Travel pedals

auxiliary hydraulic lines ISO12117

Dozer blade with  oat function Retractable seat belt

Maintenance free battery
Hydraulic oil cooler

Optional Equipment

Optional equipment may vary. Consult your Cat dealer for details.

Cab, radio ready with FOPS ISO 10262 Front screen guard for cab and canopy Thumb ready stick

(Level 1), Tip Over Protection (TOPS)
ISO12117, heater/defroster, interior light

and windscreen wiper/washer
Suspension seat, fabric covered
Boom check valve
Mirror pack
Mechanical quick coupler

Ecology drain for hydraulic tank
Bio Oil
Ecology drain for engine oil
Rotating beacon
Additional hydraulic circuit diverted from

bucketcylinder

Auto idle (Standard in North America)

(Standard in North America)
Custom color paint
Joystick mounted proportional

auxiliarycontrol

9

Notes

10

11

302.7D Mini Hydraulic Excavator

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visit us on the web at www.cat.com

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All rights reserved

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AEHQ6207-02 (04-2012)

Replaces AEHQ6207-01