Motor Load Chart

Equipment Type Load Type Sizing Notes
~ A ~
Air Fan / Blower Hard High inertia start up
Air Compressor – Piston Very Hard Static Converter not recommended
Air Compressor – Rotary Screw Very Hard Static Converter not recommended
Air Conditioner – Compressor Hard
Auger – Dry Material Hard
Auger – Wet Material Very Hard
Auto Lift – Mechanical Hard
Auto Lift – Hydraulic Hard
~ B ~
Baler Hard Usually hydraulic
Battery Charger Inductive
Bender Hard
Binding Machine Medium
Blower Hard High inertia start up
Boring Machine Medium
Brake Hard
Buffer Easy / Medium
~ C ~
Car Wash Machinery Hard Pump motors and blowers
Center Pivot Medium / Hard Booster pump and pivot wheel motors
Coffee Grinder Medium
Cold Saw / Chop Saw Medium / Hard Many are 2-speed
Compactor Hard Usually hydraulic
Concrete Block Maker Medium
Concrete Mixer Hard
Conveyor Hard Starts under load
Crusher Hard
~ D ~
Die Cutter Hard
Dishwasher Medium
Door Opener Medium Starts under load
Dough Mixer Medium / Hard Starting load determined by consistency of material mixing
Drill Press Easy
Dry Cleaning Equipment Hard
Dryer Medium / Hard High inertia start up
Dust Collector Hard High inertia start up
~ E ~
Edgebander Resistive / Medium Heating elements and motors
EDM Machine Resistive
Elevator Very Hard
Embroidery Machine Medium
Engraving Machine Medium
Exhaust Fan Hard High inertia start up
Extractor – Laundry Hard
~ F ~
Fan Hard High inertia start up
Flywheel Loads Hard High inertia start up
Folding Machine Medium
Freezer Compressor Hard Static Converter not recommended
~ G ~
Garbage Compactor Hard Usually hydraulic
Garbage Disposal Medium
Grain Dryer Hard
Granite Saw Hard
~ Grinders ~
Grinder – Bench Medium / Hard
Grinder – Centerless Medium / Hard
Grinder – Meat Medium
Grinder – Surface Medium / Hard
Grinder – Pedestal Medium
~ H ~
Hammer Mill Hard
Heating Element Resistive
Hoist Hard
Hydraulic Motors Hard
~ I ~
Ice Cream Machines Hard Multiply motors/compressors
Ice maker Hard
Injection Molding Machine Resistive / Hard Heating elements
Ironworker Hard
Irrigation Pump Hard
~ J ~
Jointer Medium / Hard
~ K ~
Kiln Resistive
~ L ~
Laser Electronic
Lathe – clutched Medium / Hard
Lathe – Non-clutched Hard
Lift Hard
Lift Station Pump Hard
~ M ~
Meat Grinder Medium
Mill Easy / Medium
Mixer Medium / Hard Starting load determined by consistency of material mixing
Molder – Wood Hard
~ O ~
Organ – Pipe Hard
Oven Resistive
~ P ~
Paper Cutter – Shear Hard
Paper Shredder Hard
Planer – Wood Hard
Plasma Cutter Resistive
Press – Brake Hard
Pressure Washer Hard
Printing Press Hard
Punch Press Hard
~ Pumps ~
Pump – Booster Hard Static Converter not recommended
Pump – Centrifugal Medium Static Converter not recommended
Pump – Heat Hard Static Converter not recommended
Pump – Irrigation Hard Static Converter not recommended
Pump – Submersible Very Hard Static Converter not recommended
Pump – Pool Hard Static Converter not recommended
~ R ~
Refrigeration Compressor – Truck Very Hard
Robot CNC
Rock Crusher Hard
Roller Hard
Router Medium
~ Sanders ~
Sander – Drum Medium
Sander – Disc Medium
Sander – Edge Medium
Sander – Wide Belt Medium
~ Saws ~
Saw – Band Saw Medium / Hard
Saw – Bridge Saw Hard
Saw – Cut Off Easy / Medium
Saw – Granite / Stone Hard
Saw – Meat (Table Saw) Easy
Saw – Meat (Band Saw) Hard
Saw – Radial Arm Medium
Saw – Table Saw Easy
Saw – Panel saw Medium
~ S ~
Saw Mill Hard
Sewing Machine Easy
Shaker Hard
Shaper Medium
Shear Hard
Sheet Metal Brake Hard
Siren Hard
~ T ~
Tanning Bed Resistive
Tire Balancer Easy / Medium
Tread Mill Hard
~ V ~
Vacuum Pump Hard Static Converter not recommended
Vibrating Machine Hard
~ W ~
Washing Machine Medium
Welder Resistive
Wine Making Machines Hard
~ X ~
X-Ray Machine Call for Sizing