A 315 kW three-phase electric motor belongs to the most heavily loaded class of heavy-industry drives, delivering around 430 HP of continuous shaft power. In DRG Motor's İzmir production, this power class is built with a cast iron frame and a robust bearing system so it can run without interruption on crushing-screening lines, compressors and large pump installations.

Technical Character of the 315 kW Class

This motor operates on a 400/690 V supply and is usually offered in 1500 rpm (4-pole) or 1000 rpm (6-pole) versions. Class F insulation, IP55 protection and S1 continuous duty keep the temperature rise within safe limits at this current-hungry power level. Star-delta or soft starters bring the inrush current under control during start-up.

The Role of the Cast Iron Frame

At a power level of 315 kW, mechanical vibration and thermal load are considerable. A cast iron frame offers greater mass and damping than aluminium, reducing vibration and dissipating heat more steadily across the cooling fins. This extends bearing life and provides dimensional stability under demanding conditions.

Typical Applications

This power class is preferred on crusher and aggregate lines, high-flow centrifugal pumps, screw and reciprocating compressors, large fans and mill drives. The 6-pole variant suits loads that need high starting torque, while the 4-pole version fits applications that require a steady high speed.

Making the Right Choice at 315 kW

DRG Motor supplies its 315 kW motors in IE3 and higher efficiency classes with B3 foot or B35 foot-and-flange mounting options. To define the right configuration for your drive's speed, torque and mounting requirements and to confirm current lead times, contact DRG Motor directly.