Baldor Motor 36Q758S109G1 Motor

The Baldor Motor 36Q758S109G1 is a 3 HP, 1760 RPM, three-phase general purpose motor on the 182TZ frame with a 208-230/460 V, 60 Hz nameplate. Baldor-Reliance classifies it as a 3628M motor with NEMA Design B characteristics, Class F insulation, a 1.15 service factor, KVA code K and 40°C ambient continuous duty. Current draw is 8.6-8.2 A at 208-230 V and 4.1 A at 460 V, and Baldor lists 89.5% efficiency at full load. Wound with four poles for a 1800 RPM synchronous speed at 60 Hz, it turns at about 1760 RPM under load, the standard speed for belt-driven blowers, fans and pumps in commercial HVAC and process work. The extra 208 V rating is what sets it apart for buildings served by a 208 V three-phase system.

Mechanical and electrical details. The 0.875 inch shaft extends at the pulley end, rotation is reversible, and the motor uses F1 mounting on a rigid base with vertical lifting lugs and an overall length of 15 inches. Ball bearings — 6206 drive end and 6205 opposite end — are packed with Polyrex EM grease, and a built-in automatic-reset thermal overload protects the windings. The motor has 12 flying leads of 16 AWG exiting through a knockout (Ko) box for connection to the line voltage shown on the nameplate. It carries an OPSB enclosure designation, no drip cover and no heater, is listed for direct-on-line starting and as inverter ready, holds CSA and UR approvals and is RoHS compliant.

Selecting and installing. Because this is a Baldor spec-number motor, match the CAT.NO./SPEC on the nameplate — 36Q758S109G1 — and confirm horsepower, speed, frame suffix (182TZ), voltage and shaft diameter before ordering. If your supply is 230/460 V only, the sister motor 36N231S109G1 is the same 3 HP, 1760 RPM, 182TZ design with a 230/460 V nameplate. Disconnect and lock out power, check rotation with the load uncoupled, size overload protection from the nameplate amps, and align the sheaves with correct belt tension. Over-tensioned belts and misaligned pulleys are the most common reasons a motor of this size loses its drive-end bearing early, so set them carefully.

Key Benefits

• Covers 208 V Systems: The 208-230/460 V nameplate lets the same motor run on 208 V commercial three-phase service as well as 230 V and 460 V.
• Genuine Baldor Spec Match: Specified by Baldor-Reliance as 36Q758S109G1, so frame, shaft and mounting match the original 182TZ design.
• Protected Windings: Automatic-reset thermal overload, Class F insulation and a 1.15 service factor guard against overheating on heavy duty.
• Common Bearing Sizes: 6206 and 6205 ball bearings with Polyrex EM grease keep future maintenance simple.

Common Questions

• What voltage is this motor rated for? The nameplate reads 208-230/460 V, three-phase, 60 Hz, at 8.6-8.2 A on the low-voltage connection and 4.1 A on the high-voltage connection.
• Can I run it from a variable frequency drive? Baldor lists the motor as inverter ready; follow the drive maker's guidance on carrier frequency and lead length, and set the drive overload from the nameplate amps.
• How is it different from the 36N231S109G1? Both are 3 HP, 1760 RPM, 182TZ motors. The 36N231S109G1 nameplate is 230/460 V; the 36Q758S109G1 is 208-230/460 V.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.