Product Description:

The EP3640-1436-7-56BC-CU is a permanent-magnet DC motor manufactured by Pacific Scientific for the Permanent Magnet DC Motors series. It converts direct-current power into rotary motion that drives conveyors, small hoists, or positioners in industrial automation cells. The TENV enclosure isolates internal components from airborne debris while dispersing the limited heat generated at rated load, so no external fan or ducting is required. Its fractional-horsepower output and standardized 56 C-frame mounting faces allow installation on equipment that uses this common mounting pattern.

The motor is designed for a supply of 90 VDC, which matches many single-phase rectified drives found in compact control cabinets. When energized at this voltage, the armature reaches a rated speed of 1750 RPM, a common base speed that simplifies pulley selection and keeps gearbox ratios low. A continuous torque rating of 18.0 lb-in can be delivered while holding the winding temperature within safe limits, and this requires only 4.7 A of steady armature current. The armature resistance is 1.03 Ω, which affects the voltage drop and copper losses at that current. Mechanical attachment uses a 5.875 in bolt circle with a 4.500 in pilot, and the 0.188 × 1.38 in key locks couplings to the shaft. Inductance of 5.1 mH moderates current ripple and reduces brush arcing during commutation.

During acceleration or rapid reversals, the controller may command up to 87.0 A of peak armature current, giving short bursts of torque well above the continuous rating. Each ampere contributes roughly 4.24 lb-in/A, so the drive can calculate transient torque precisely. Mechanical output is transmitted through a 0.6250 in diameter steel shaft that mates with standard couplings and maintains concentricity under load. With an overall length of 12.38 in and a mass of 30 lb, the unit mounts directly to a 56 C face without additional support.