BaldorMM3554Three-Phase TEFC IEC Metric Motor, 1.1 kW 1.5 HP, 1755 RPM, D90S Frame, Four Pole, Design B

Product Description

What this part is

Baldor MM3554 three-phase AC induction motor on an IEC metric frame. Manufacturer: Baldor. Part Number: MM3554. Power: 1.1 kW (1.5 HP). Full Load Speed: 1755 RPM. Synchronous Speed Class: 1800 RPM, four pole. Phase: 3. Frequency: 60 Hz. IEC Frame: D90S. Motor Type: 3521M. Enclosure: TEFC, totally enclosed fan cooled. NEMA Design: B. Serial or Order Reference: 35K786T586H1.

Decoding the designation

MM — Baldor’s IEC metric frame three-phase motor prefix, as against the plain M prefix used on the NEMA frames.

3554 — the catalogue number that fixes the 1.1 kW / 1.5 HP rating at the 1800 RPM four-pole speed.

D90S — the IEC 90 short frame, the standard metric frame for a 1.1 kW four-pole motor.

3521M — the Baldor motor type code stamped on the nameplate.

MM-3554 and MM3554 are the same catalogue number, hyphenated and plain.

What these specs mean in practice

Power: 1.1 kW (1.5 HP). Full Load Speed: 1755 RPM. A four-pole motor on 60 Hz has a synchronous speed of 1800 RPM, and the 45 RPM shortfall at full load is the slip that produces torque; 1.1 kW at 1755 RPM works out at about 6.0 N·m of shaft torque. IEC Frame: D90S. The IEC frame designation fixes the shaft height at 90 mm above the mounting feet and sets the foot hole pattern, shaft diameter and shaft extension to IEC 60072, so the motor is dimensionally interchangeable with any other maker’s 90S four-pole machine. That is what makes a metric-frame motor the right replacement on European-built machinery, where a NEMA 56 or 143T frame does not line up. Enclosure: TEFC. A totally enclosed fan cooled frame keeps dust, chips and washdown spray out of the windings and cools through the shell. NEMA Design: B. Design B is the standard-torque, standard-starting-current curve that most across-the-line starters and variable frequency drives are sized for.

Mounting data

IEC Frame: D90S. Shaft Height: 90 mm. Mounting: foot mounted to IEC 60072. The D90S frame takes the same feet, shaft and keyway as any 90S four-pole IEC motor, so it drops into an existing metric base plate and coupling without machining.

Quantity and configuration

Unit Quantity: 1 Pc. One complete motor per listing.

Condition

Condition: New, open box.

Interchange guidance

MM3554 and MM-3554 are the same catalogue number. Within Baldor’s metric range the 3554 catalogue figure carries the 1.1 kW, 1800 RPM four-pole rating across prefixes and executions: MVM3554C and MVM3554D are the D-flange and C-face versions on the D90SC and D90SD frames, and EMM3554 is the same 1.1 kW D90S rating in the IEC frame steel and cast iron line. All share the 90 mm shaft height and the IEC 60072 mounting interface.