Komatsu PC71 Base

Specifications of Komatsu PC71 Base

Engine

• (SAE J1995) 60 HP 44.1 kW @ 1900 RPM
• Aspiration Naturally aspirated
• Bore 105mm 4.13”
• Engine Model .KOEL 4R-1040
• Governor All-speed, m echanica
• No. of cylinders 4
• Piston displacement . 4.16ltr 253.63 cu in
• Stroke 120mm 4.72”
• Type .4-cycle, water-cooled, direct-injection

Service Refill Capacities

• Engine 9.6 ltr 2.5 U.S.gal
• Final drive, each side 1.7 ltr 0.4 U.S. gal
• Fuel Tank 130.0 ltr 34.3 U.S. gal
• Hydraulic Tank 57.0 ltr 15.1 U.S.gal
• Radiator 22.0 ltr 5.8 U.S. gal
• Swing drive. 1.5 ltr 0.4 U.S. gal

Operating Specifications

• Bucket hook height 3710 mm 12’ 2” one-piece boom
• Lifting Capacity 1650 mm 5’ 5” arm
• Rating over front 0.3 m 0.4 cu. yd SAE heaped HD bucket
• Rating over side 450 mm 18” triple-grouser shoes

Dimensions

• Distance, swing center to rear end 1750 mm 5'9'’
• Ground clearance, counterweight 750 mm 2'6''
• Grouser Height 20 mm 0.79''
• Length of Track on Ground 2130 mm 7'
• Length on ground (transport) 3645 mm 12’
• Machine cab height 1810 mm 5'11''
• Machine cab width 2180 mm 7'2''
• Min. Ground Clearance 350 mm 1'2''
• Overall Height (to top of boom) 2500 mm 8'2'’
• Overall height (to top of cab) 2590 mm 8'6''
• Overall Length 6080 mm 19'11'’
• Overall Width 2225 mm 7'4''
• Tail swing radius 1750 mm 5'9''
• Track Gauge 1700 mm 5'7''
• Track Length 2765 mm 9'1''
• Track Shoe Width 450 mm 1'6''
• Width of crawler 2150 mm 7'1''

Hydraulic System

• Main pump: .Variable-displacement piston p ump
• Maximum flow. 1 x 155 ltr / min 41.0 U.S. gal/min
• Swing 1 x Axial piston motor with Swing holding brake
• Travel .2 x Axial piston motor with parking brake
• Type HydrauMind (Hydraulic Mechanical Intelligence New Design) system Closed-centre system with load sensing valves and pressure compensated valve

Brakes

• Parking brakes Oil disc brake
• Service .Hydraulic lock type

Undercarriage

• No. of carrier rollers 5 each side
• No. of shoes .38 each side
• No. of track rollers 1 each side
• Seal of track Sealed track
• Track adjuster .Hydraulic type
• Track frame .Box section type

WEIGHT

• Ground Pressure 0.34 kg/cm²
• Operating Weight 7050 kg

SWING SYSTEM

• Driven by Hydrostatic motor
• Swing circle lubrication .Grease-bathed
• Swing lock Oil disc brake
• Swing reduction .Planetary gear reduction
• Swing speed.. 12.0 RPM

WORKING RANGE

• Arm crowd force 3600 kg
• Bucket digging force 4800 kg 10,580 Ib/47.1 kN
• Max. digging depth 4100 mm 13'5''
• Max. digging height 7150 mm 23'6”
• Max. digging reach 6360 mm 20'10''
• Max. digging reach at ground level 6220 mm 20'5''
• Max. dumping height 5015 mm 16'5''
• Max. vertical wall digging depth 3505 mm 11'5’'
• Min. swing radius 1750 mm 5’9”