Quarry Duty Low Voltage Motor

Quarry Duty Low Voltage Motor

Built with features like Grade 25 cast iron construction, 4142 tensile-strength shaft steel, heavy duty oversized roller bearings and torques that exceed Nema design C.  Toshiba’s quarry duty motor will deliver consistent reliable service.

Standard Features

Class F insulation with B rise
Double or triple baked with Class H varnish
Cast iron conduit boxes on 320 frame and larger
V-ring shaft seal on drive end
Bearing lock nut on 440 frame and larger
L-10 bearing life of 40,000 hours for belt drive and 100,000 hours of direct-coupled applications
Grade 5 or 8 zinc-dichromate plated hardware
Dynamically balanced to 0.1 inch per second or better
Capable of all mounting positions without design changes