background image

8

9

W

ORKING 

E

NVIRONMENT

HYDRAULIC EXCAVATOR

PC1250

-8

0

Large Comfortable Cab

Comfortable Cab 

New PC1250-8’s cab offers an exceptionally comfortable

operating environment. The large cab enables full flat

reclining of the seat back with headrest.

Pressurized Cab

The optional air conditioner, air filter and a higher internal air

pressure (

6.0 mm Aq 

0.2" in Aq) prevent external dust

from entering the cab.

Low Noise Design

Noise level is remarkably reduced, not only engine noise but

also swing and hydraulic relief noise. 

Low Vibration with Cab Damper Mounting

PC1250-8 uses a new, improved cab damper mount system

that incorporates longer stroke and the addition of a spring. 

The new cab damper mounting combined with a

strengthened left and right side deck, aids vibration reduction

at the operator’s seat.

Vibration at floor is reduced from 120 dB (VL) to 115 dB (VL). 

dB (VL) is index for expressing 
size of vibration.

Rubber

Silicon Oil

Spring

Cab Damper  
Mounting

Multi-Layer
Viscous Mount

Floor Vibration

Comparison of Riding Comfort

Conditions: 

  

 Traveling over obstacle 

     one side track
  

 Traveling speed forward high

Vertical direction on graph shows size of vibration.

Washable Cab Floormat

The PC1250-8’s cab floormat 
is easy to keep clean. The
gently inclined surface has a
flanged floormat and drainage
holes to facilitate runoff.

Photo may include optional equipment.

Photo may include optional equipment.

Multi-position Controls

The multi-position, PPC (proportional pressure control)

levers allow the operator to work in comfort 

while maintaining precise control. A double-slide

mechanism allows the seat and control levers to move

together or independently, allowing the operator 

to position the controls for maximum 

productivity and comfort.

Safety Features

Step light with timer

provides light for about one 

minute to allow the operator to 

get off the machine safely.

Pump/engine room partition 

prevents oil from spraying on 

the engine if a hydraulic hose

should burst.

Seat Sliding Amount: 340 mm 13.4",
increased 120 mm 4.7"

Seat with headrest 

reclined full flat

Defroster (optional)

Cab Frame Mounted Wiper

Bottle Holder and 
Magazine Rack

The cab interior 

is spacious and provides a comfortable working

environment…

Automatic Air Conditioner (optional)

A 6,900 kcal air conditioner

is utilized. The bi-level

control function keeps the

operator's head and feet

cool and warm respectively.

This improved air flow

function keeps the inside of

the cab comfortable

throughout the year.

Anti-slip Plates

Spiked plates on working

surfaces provide anti-slip

performance.

Anti-Slip Plates

Horn interconnected with

warning light (optional)

give

visual and audible notice of the

excavator’s operation when

activated.

H

Y D R A U L I C  

E

X C A V A T O R

PC1250

-8

Thermal and fan guards

are

placed around high-temperature

parts of the engine and fan drive.

Summary of Contents for PC1250 -

Page 1: ...h fixed front window HYDRAULIC CONTROLS Fully hydraulic with Electronic Open Center Load Sensing EOLSS and engine speed sensing pump and engine mutual control system One gear pump for control circuit Two axial piston motors for swing with single stage relief valve One axial piston motor per track for travel with counter balance valve Three variable capacity piston pumps 2 Main 1 Swing Three contro...

Page 2: ...tenance Easy Cleaning of Cooling Unit Fan reverse rotation function facilitates clogged radiator cleaning Centralized Arrangement of Engine Checkpoints Anti slip Plates for improved foot traction Large Handrail Step and Catwalk provide easy access to the engine and hydraulic equipment See page 10 Highly Reliable Electronic Devices Exclusively designed electronic devices have passed severe testing ...

Page 3: ...Common Rail system Electronically controlled cooled EGR system Hydraulic control valve Main pump Komatsu Technology Komatsu develops and produces all major components such as engines electronics and hydraulic components in house With this Komatsu Technology and adding customer feedback Komatsu is achieving great advancements in technology To achieve both high levels of productivity and economical ...

Page 4: ...provide excellent reliability and durability when working on rocky ground or blasted rock Quarry Bucket with XS Tooth High tensile strength steel Koma hard materials Shroud Enlarged XS Tooth Unique bucket tooth shape superior digging performance Long term high sharpness Great penetration performance Hammerless safe and easy tooth replacement Tooth replacement time Halves the conventional machine S...

Page 5: ...ate runoff Photo may include optional equipment Photo may include optional equipment Multi position Controls The multi position PPC proportional pressure control levers allow the operator to work in comfort while maintaining precise control A double slide mechanism allows the seat and control levers to move together or independently allowing the operator to position the controls for maximum produc...

Page 6: ...Data Memory Function Trouble data is stored to serve as references for future trouble shooting Error codes are displayed to aid in service diagnosis Convenient Utility Space Utility space provides great convenience to store tools spare parts etc H Y D R A U L I C E X C AVAT O R PC1250 8 VHMS Vehicle Health Monitoring System optional VHMS controller monitors the health conditions of major component...

Page 7: ...OOM COMBINATION Unit mm ft in H Y D R A U L I C E X C AVAT O R PC1250 8 LOADING SHOVEL Operating weight including 5300 mm 17 5 boom 3800 mm 12 6 arm 6 5 m3 8 5 yd3 heaped bucket operator lubricants coolant full fuel tank and standard equipment PC1250 8 Shoes Operating Weight Ground Pressure Double grouser 110900 kg 142 kPa 700 mm 244 490 lb 1 45 kg cm2 28 20 6 psi PC1250 8 PC1250SP 8 Operating Gro...

Page 8: ...500 15500 30 33 500 33 500 34 200 34 200 6 1 m 15850 13200 17300 17300 19950 19950 24400 24400 20 34 900 29 100 38 100 38 100 44 000 44 000 53 800 53 800 3 0 m 15650 11850 16400 12500 19800 16100 23900 20850 30550 27650 10 34 500 26 200 36 100 27 500 43 700 35 500 52 700 46 000 67 400 60 900 0 0 m 16250 12300 19950 15200 24200 18200 32650 26100 0 35 900 27 100 44 000 33 500 53 400 40 200 72 000 57...

Page 9: ... m 8400 8400 12850 9600 15950 12050 20 100 15300 25900 19800 34800 26450 31200 31200 0 18 500 18 500 28 400 21 100 35 200 26 600 44 300 33 800 57 100 43 600 76 700 58 300 68 800 68 800 3 0 m 11500 10150 15500 11600 19300 14600 24850 18800 33600 25300 47600 36800 10 25 400 22 400 34 100 25 600 42 600 32 100 54 800 41 500 74 100 55 800 105 000 81 100 6 1 m 18600 14100 19750 15000 25200 19150 33250 2...

Reviews: