User manual ZENOAH KOMATSU PC750-7 BROCHURE

[. . . ] Excellent Swing Performance provides excellent swing performance on slope. See page 4, 5. Protected hydraulic circuit The cool-running hydraulic system is protected with the most extensive filtration system available, including a high pressure in-line filter for each main pump. Photo may include optional equipment. Sturdy guards shield the travel motors against damage from rocks. Highly Reliable Electronic Devices Exclusively designed electronic devices have passed severe testing. - Controller - Sensors - Connectors - Heat resistant wiring See page 6. Advanced monitor features Large handrail, step and catwalk provide easy access to the engine and hydraulic equipment. Machine condition can be checked with Equipment Management Monitoring System (EMMS). [. . . ] By altering the oil flow, this setting allows you to select either boom or swing as the priority for increased production. Selection ON OFF Result Oil flow to the swing motor is increased. 180°loading operations are most efficient. 90°loading operations are most efficient. Shockless Boom Control The PC750-7 features a shockless valve (double-check slow return valve) that automatically reduces the amount of vibration present when operating the boom. Operator fatigue is reduced (which can improve safety and productivity), and spillage caused by vibration is prevented. Extend and retract Photo may include optional equipment. 4 5 PC750-7 HYDRAULIC EXCAVATOR RELIABILITY RELIABILITY FEATURES FEATURES Excellent Reliability and Durability Boom Foot Hoses The boom foot hoses are arranged under the boom foot to reduce hose bend during operation, extending hose life and improving operator safety. MAINTENANCE MAINTENANCE FEATURES FEATURES Easy Maintenance Komatsu designed the PC750-7 for easy service access. Heat-Resistant Wiring Heat-resistant wiring is utilized for the engine electric circuit and other major component circuits. Sturdy Undercarriage Guard The undercarriage is strengthened to provide excellent reliability and durability when working on rocky ground or blasted rock. Wide Catwalk (optional) Wide walkway for maintenance is provided around the engine and hydraulic components, allowing easy access to inspection and maintenance points. Divided Type Engine Cover The divided engine cover allows inspection points around the engine to be easily accessed. Motorized Grease Gun Equipped with Hose Reel (optional) Greasing is made easy with the electric motorized grease gun and indicator. Circuit Breaker With the circuit breaker, the machine can be easily restarted after repair. Grease can drum storage location O-Ring Face Seal The hydraulic hose seal method has been changed from a conventional taper seal to an O-ring seal. This provides improved sealing performance during vibration. Sturdy guards shield the travel motors and piping against damage from rocks. Reduced Maintenance Costs Hydraulic oil filter replacement is extended from 500 to 1000 hours. Grease gun The grease gun can be reached from ground level. Indicator High-pressure In-Line Filtration The PC750-7 has the most extensive filtration system available, providing in-line filters as standard equipment. An in-line filter in the outlet port of each main hydraulic pump reduces failures caused by contamination. Track roller guard (full length) (optional) DT-type connectors seal tight and have higher reliability. KOMTRAX® System (optional) The KOMTRAX system monitors machine condition, operating status, operating location, etc. , and provides timely notification of any machine problems. Since data is transmitted via satellite communication system, secure data communication is possible from any operating site including a quarry or a mine, further improving machine reliability. Thermal guards are placed around high-temperature parts of the engine and accessory drive. Large handrails (standard) and wide catwalk (optional) are provided around revolving frame for easier and safer access to engine and hydraulic components. 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. Photo may include optional equipment. 8 9 PC750-7 SPECIFICATIONS SPECIFICATIONS & EQUIPMENTIP & EQUIPMENTIPENGINE Model . 4-cycle, water-cooled, direct injection Aspiration . Turbocharged and air-to-air aftercooled Number of cylinders . 338 kW 454 HP @ 1800 rpm (SAE J1349) Governor . All-speed, electronic DRIVES AND BRAKES Steering control . Axial piston motor, in-shoe design Reduction system . Planetary double reduction Maximum drawbar pull . Oil disc brake HYDRAULIC EXCAVATOR BACKHOE DIMENSIONS B 4245 13'11" R=4300 14'1" 3195 10'6" 1560 5'1" 3445 11'4" 4000 13'1" 4500 14'9" 5810 19'1" 50 2. 0" 3560 11'8" PC750-7 8. 2 m 26'11" boom 3. 6 m 11'10" arm A Overall Height B Overall Length 4660 mm 15'3" 14305 mm 46'11" 4. 6 m 15'1" arm 5970 mm 19'7" 13955 mm 45'9" 5. 6 m 18'4" arm 6560 mm 21'6" 13530 mm 44'5" PC750SE-7 7. 1 m 23'4" boom 2. 9 m 9'8" arm 4615 mm 15'2" 13030 mm 42'9" 610 24" 3500 11'6" 4110 13'6" 3390 11'1" When retracted HYDRAULIC SYSTEM Type . Open-center load-sensing system Number of selectable working modes . Variable-capacity piston pumps Pumps for. [. . . ] : General purpose use, density up to 1. 8 t/m3 3, 000 lb/yd3 : General purpose use, density up to 1. 5 t/m3 2, 500 lb/yd3 --: Not useable 10 11 PC750-7 HYDRAULIC EXCAVATOR LOADING SHOVEL DIMENSIONS LIFTING CAPACITY A 9865 32'4" 4245 13'11" R=4300 14'1" 5640 18'6" 3195 10'6" B C PC750-7 Equipment: Boom: 8. 2 m 26'11" Arm: 3. 6 m 11'10" Bucket: 3. 1 m3 4. 05 yd3 with Heavy Lift On A: B: C: Cf: Cs: : Reach from swing center Bucket hook height Lifting capacity Rating over front Rating over side Rating at maximum reach Unit: kg lb 1560 5'1" 3445 11'4" 4000 13'1" 3560 11'8" 840 2'9" HEAVY LIFTING "OFF" A B 6. 0 m 19' 3. 0 m 9' 0m 0' ­3. 0 m ­9' ­6. 0 m ­19' Cf *9350 *20, 600 9650 21, 300 9800 21, 600 12000 26, 500 *14350 *31, 600 Maximum Cs 8650 19, 100 7350 16, 200 7350 16, 200 9100 20, 000 *14350 *31, 600 Cf *12950 *28, 500 14750 32, 500 13750 30, 300 13500 29, 800 9. 0 m 29' Cs 12700 28, 000 11400 25, 200 10450 23, 000 10250 22, 600 Cf *15150 *33, 400 *18450 *40, 700 18550 40, 900 18300 40, 300 7. 5 m 24' Cs *15150 *33, 400 14850 32, 800 14100 31, 000 13850 30, 500 Cf *18900 *41, 700 *25700 *56, 700 26900 59, 300 *24850 *54, 800 *17000 *37, 500 6. 0 m 19' Cs *18900 *41, 700 21900 48, 300 20100 44, 300 20150 44, 500 *17000 *37, 500 *29350 *64, 700 *29350 *64, 700 *21350 *47, 100 Cf 4. 5 m 14' Cs Cf 3. 0 m 9' Cs 4500 14'9" 5810 19'11" 610 24" 3500 11'6" 4110 13'6" 3390 11'1" When retracted 50 2. 0" *21350 *47, 100 HEAVY LIFTING "ON" A B Cf 6. 0 m 19' 3. 0 m 9' Bottom dump 4. 5 m3 5. 9 yd3 10635 mm 7180 mm 3535 mm 10305 mm 9920 mm 3875 mm 5620 mm 5. 1 m3 34'11" 23'7" 11'7" 33'10" 32'7" 12'9" 18'5" 6. 7 yd3 0m 0' ­3. 0 m ­9' ­6. 0 m ­19' *10550 *23, 300 9650 21, 300 9800 21, 600 12000 26, 500 *16650 *36, 800 A Unit: kg lb 9. 0 m 29' Cf *14800 *32, 700 14750 32, 500 13750 30, 300 13500 29, 800 Cs 12700 28, 000 11400 25, 200 10450 23, 000 10250 22, 600 Cf *17250 *38, 000 19400 42, 800 18550 40, 900 18300 40, 300 7. 5 m 24' Cs *17250 *38, 000 14850 32, 800 14100 31, 000 13850 30, 500 Cf *21350 *47, 100 28850 63, 700 26900 59, 300 26950 59, 500 *19700 *43, 400 6. 0 m 19' Cs *21350 *47, 100 21900 48, 300 20100 44, 300 20150 44, 500 *19700 *43, 400 *32500 *71, 700 *32500 *71, 700 *23750 *52, 300 *23750 *52, 300 Cf 4. 5 m 14' Cs Cf 3. 0 m 9' Cs Maximum Cs 8650 19, 100 7350 16, 200 7350 16, 200 9100 20, 000 *16650 *36, 800 WORKING RANGE AND BUCKET SELECTION Working Range 11 10 9 8 7 Type of bucket Capacity­heaped A B C D E F G Max. digging reach at ground level Level crowding distance Min. crowd distance A B 6 5 4 3 2 1 *Load is limited by hydraulic capacity rather than tipping. Rated loads do not exceed 87% of hydraulic capacity or 75% of tipping load. PC750-7 B C Bucket digging force Arm crowd force 477 kN 48600 kg 107, 140 lb 404 kN 41200 kg 90, 830 lb G. L. 11 10 9 8 7 6 5 4 3 2 1 0 1 2 3 Equipment: Boom: 8. 2 m 26'11" Arm: 4. 6 m 15'1" Bucket: 2. 8 m3 3. 66 yd3 Bucket Selection Type of bucket Capacity­heaped Width Weight No. [. . . ]