BALDOR

Baldor general-purpose AC motors are available in three primary mounting configurations: C-face mount, rigid base mount, and C-face with rigid base mount. C-face motors feature a flanged end shield for direct coupling to equipment such as pumps or gear reducers. Rigid base motors have mounting feet for floor or bracket installation. The combination C-face with rigid base provides both a flanged face and mounting feet, offering flexibility in installation and allowing the motor to be foot-mounted while also accepting a C-face attachment. These options cover a range of mechanical integration needs in industrial settings.

Baldor three-phase general-purpose motors are supplied in two main enclosure types: Open Drip Proof (ODP) and Totally Enclosed Fan-Cooled (TEFC). ODP enclosures have ventilation openings that allow air to circulate through the motor, suitable for clean, dry indoor environments. TEFC enclosures are sealed to prevent dust, dirt, and moisture from entering the motor, making them appropriate for harsh or outdoor conditions. Both enclosures are available across various horsepower ratings and mounting styles. The choice depends on the operating environment and the level of protection required for the application.

Baldor general-purpose AC motors in the catalog are predominantly three-phase, with common voltage ratings including 208-230/460V AC and 460V AC. These dual-voltage ratings allow the motor to be connected to either 208-230V or 460V supply by changing the lead connections. Some models are rated for 230/460V AC. Single-phase options may also be available but are less common in the general-purpose line. The full load current varies with voltage and horsepower, and is specified on the nameplate. It is important to match the motor voltage to the available power supply and to verify the full load current for proper overload protection.

Baldor C-face motors in the general-purpose line cover a wide range of horsepower and speeds. Examples include 1/2 hp at 1,774 RPM, 2 hp at 1,750 RPM or 1,760 RPM, 5 hp at 1,160 RPM, 7 1/2 hp at 1,800 RPM, 10 hp at 1,800 RPM, and 20 hp at 3,520 RPM. These speeds correspond to common synchronous speeds at 60 Hz, such as 1,800 RPM (4-pole), 1,200 RPM (6-pole), and 3,600 RPM (2-pole), with actual full-load speeds slightly lower due to slip. The range allows selection for various driven equipment requirements, from low-speed high-torque applications to high-speed fans or pumps.

Baldor motors often carry certifications such as CSA, UR (Underwriters Laboratories Recognized), and RoHS compliance. These certifications indicate that the motors meet specific safety and environmental standards. CSA certification is common for motors used in Canada and the United States, while UR recognition signifies that the component has been evaluated by UL. RoHS compliance means the motor restricts the use of certain hazardous substances. However, not all models carry every certification, so it is advisable to check the specific product documentation for the exact standards applicable to a particular motor. The presence of these certifications supports their use in regulated industrial environments.

Selecting a Baldor motor for a pump application involves matching the motor's horsepower, speed, and mounting to the pump's requirements. First, determine the required horsepower and operating speed of the pump. Then choose a motor with a nameplate rating that meets or exceeds these values. For direct-coupled pumps, a C-face mount is often used; for belt-driven pumps, a rigid base may be appropriate. Consider the environment: ODP for clean, dry locations; TEFC for dusty or wet conditions. Verify the voltage and phase available. Check the full load current to ensure proper wiring and protection. The motor's frame size must also match the pump mounting. Consulting the pump manufacturer's specifications and the motor datasheet ensures compatibility.