Baldor EM3218TA General Purpose Motor, 5 HP, 208 230 460V AC, Open Drip Proof, Rigid Base Mount, 1750 rpm, 184T Frame, Auto Thermal Protection 3ZG99 Meritor RPL 20 Meritor RPL 20 100 Grade 2A Includes Calibration Certificate NIST with Data Process Connection Gender Male Pointer Characteristics Lightweight Balanced Construction with Micrometer Adjustment Cleaned for Oxygen Service No Liquid Filled Case No Ambient Operating Temperature Range 40 Degrees to 275 Degrees F Movement Type Rotary Field Fillable No Bezel Mounting Type Bayonet Primary Scale Minor Graduations 0 1 1 8 in Shaft Length 2 3 4 in Motor Bearings Ball Length Less Shaft 13 3 4 in Overall Length 16 1 2 in Includes Conduit Box Weight 81 lb Nominal Efficiency 89 Variations to the frame's standard dimensions and design are indicated by a letter designation following the frame number