Reliable Electric Motor Products for Fabricators

Five commonly recognized electric motor categories are DC motors, induction motors, synchronous motors, universal motors, and stepper motors. DC motors use direct current and are valued for controllable speed. Induction motors are widely used in industrial equipment. Synchronous motors run at a speed tied to supply frequency, while universal and stepper motors serve specialized applications requiring compact power or precise positioning.

A basic electric motor commonly includes a stator, rotor, shaft, bearings, windings, commutator or electronic controller, and housing or frame. The exact construction varies by motor type. For example, AC induction motors do not use a commutator, while wound-rotor motors use rotor windings and related control components. Industrial systems also include enclosures, braking equipment, and external controls.

Piranha’s tri-speed retrofit is designed for older mechanical plate bending machines using slip-ring motors, manual reversing drum controllers, and grid resistors for plate-feeding power. It replaces the full-voltage manual drum controller and associated electrical control items. The rewired controls are consolidated in a NEMA-12 enclosure, with a simplified operator console and reduced-voltage safety joystick for feeding control.

Older drum controllers can be costly to maintain or replace and may not align with current federal, state, local, and OSHA expectations for reduced-voltage control circuits. A control retrofit can simplify operation, centralize electrical components, and introduce a guarded, reduced-voltage control arrangement. It is a practical option for shops seeking to extend the useful life of compatible mechanical plate bending equipment.

The quoted tri-speed package includes the electrical control components and uses the existing wound-rotor main drive motor and grid resistors. A brake and motor upgrades are not included in the base package price. If the existing motor lacks a compatible brake, the machine will need the correctly sized brake or, when that is not possible, a replacement main drive motor with a proper brake.

The retrofit includes a rugged spring-centered joystick operating at reduced voltage to control forward-neutral-reverse roll feeding. Its operator console is attached to the NEMA-12 cabinet for convenient access. For added protection, plate feeding is designed as a two-handed operation, requiring both hands to remain at the control desk while the roll forgings rotate. This arrangement helps reduce exposure during operation.

Yes. Piranha provides configuration and pricing support through its Build and Price process, with account registration required to access full product catalog details, quotes, and purchasing options. For tri-speed retrofit needs, Piranha-Bertsch can also assist customers in determining brake requirements and whether an existing wound-rotor motor can be adapted or should be replaced for the intended application.

Piranha provides U.S.-based support resources that can include phone, email, remote diagnostics, control software assistance, training, and spare-parts availability. For Piranha CNC Fiber Lasers, lifetime service and support are provided from Belvidere, Illinois, with same-day shipping available for in-stock parts. Available support varies by equipment line and the specific product purchased.