Motor
Motor
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 07 CATERPILLAR 140H MOTOR GRADER  US $174,900.00
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 2006 JOHN DEERE 772D MOTOR GRADER WHOLESALE PRICE US $148,000.00
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 SOOSAN ROCK DRILL CUMMINS MOTOR ENCLOSED CAB US $127,999.00
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 1995 CATERPILLAR 140G MOTOR GRADER RIPPER SCARIFIER US $84,900.00
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 2003 John Deere 770CH Motor Grader US $82,500.00
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 1982 CHAMPION MOTOR GRADER RECONDITIONED READY TO WORK US $39,900.00
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 2005 John Deere 550J LGP Dozer NEW MOTOR US $35,900.00 |
 1996 Galion 850B Motor Grader US $38,000.00
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 Champion C80A27 C Series Motor Grader Dozer Blade Low Hours bidadoo NR US $28,000.00 |
 1990 John Deere 670 B motor Grader US $27,500.00
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 1989 JOHN DEERE 570B MOTOR GRADER 12 FT MOLD BOARD SCARIFIER GRADER US $27,500.00 |
 John Deere 770 1978 Model Motor Grader 13 moldboard cab front ripper diesel US $27,500.00
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 247B Caterpillar Skid Steer 2007 New Motor Installed only 49 hrs US $27,500.00 |
 1988 JOHN DEERE 862B MOTOR SCRAPER ARIZONA NO RUST MACHINE US $25,000.00
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 1993 CAT 615C MOTOR SCRAPER US $25,000.00 |
 Alimak HEK Motorized Work Platform Scaffold Heavy Range MSHF 20m 30m 118 MS HF US $19,999.95
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 Ford A64 LOADER diesel 4x4 has a 3yard bucket new motor good tires Cat US $17,500.00
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 M65B FIATALLIS 1984 MOTOR GRADER US $16,995.00
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 cat caterpillar motor grader 99E 14 foot blade diesel US $16,500.00
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 CAT 623B MOTOR SCRAPER NEW CUSHION HITCH PADDLES US $16,500.00
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 Ford F800 Service Truck 59 Cummins Motor 9 speed US $16,500.00
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 Baghouse Dust Collector Powder Emissions 10 HP Motor US $15,500.00
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 CATERPILLAR CAT 14C MOTOR GRADER 12 BLADE US $12,900.00
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 Dinkmar vacum blower hyd raise tube hitch gas motor remote control low hour 04 US $12,650.00
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 Dresser motor road grader US $12,400.00 |
 Denver Orion 8 x 6 24 slurry pump with 125 HP motor US $12,000.00
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Why should a Series motor always Start with a Load?
Why should a series motor always start with a load?
Why should a shunt motor always start without a load?
Series motors are designed to generate Large Starting Torque. They Draw Heavy Current producing 2.25 times the Max Rated torque at start-up. When there is no load connected, Speed of a series motor increases to the Point where the motor draws excessive current. Usually, either the bearings are damaged or the windings fly Out of the slots in the Armature. There is a danger to both Equipment and personnel. This precaution is primarily for large motors. Small motors, such as those Used in Electric Hand Drills, have enough Internal friction to load themselves.
If the load on the shunt motor is increased, the motor tends to Slow Down. When this happens, the Counter emf generated in the armature decreases. This causes a corresponding decrease in the opposition to Battery current Flow through the armature. Armature current increases, causing the motor to speed up. The conditions that established the Original speed are reestablished, and the original speed is maintained. Conversely, if the motor load is decreased, the motor tends to increase speed; counter emf increases, armature current decreases, and the speed decreases.
The Only problem is that during start - up, the motor will no speed up that 'fast' to Stop increased current From burning the Circuit. This happens as there is no active Cooling.
