The 775 DC 12V 21000RPM Double Ball Bearing Motor is the "supercharged" version of the standard 775 series. At Electrapac, we recommend this specific model for high-intensity applications where maximum speed and structural durability are non-negotiable.

Product Overview

This is a high-performance 775 motor engineered for speed. While standard 775 motors usually peak at 12,000 RPM, this variant is tuned to reach an incredible 21,000 RPM at 12V. To handle this velocity, it is equipped with Double Ball Bearings—one at the front and one at the back—to ensure the shaft remains perfectly centered and friction-free at extreme speeds.

Key Features for Electrapac Customers

• Double Ball Bearing Advantage: Unlike motors with sleeve bushings, the front and rear ball bearings significantly reduce mechanical noise, eliminate shaft "play," and prevent the motor from seizing during high-speed rotation.

• Integrated Cooling Fan: Features an internal centrifugal fan that pulls cold air through the windings. This is critical for 21,000 RPM operation to prevent thermal shutdown.

• Massive Power Output: Built with thick copper windings and strong magnets, providing the necessary "punch" for cutting through wood, plastic, or light metals.

• All-Metal Construction: The rugged metal housing is designed for industrial environments and long-term DIY use.

• High Efficiency: Despite its power, the Class D-like efficiency of the motor design ensures you get more work out of every Ampere pulled from your power source.

Power & Safety Requirements

Because this is a high-speed racing-grade motor from www.electrapac.com, it has specific power needs:

1. High Current Source: To start this motor under load, you need a power supply capable of at least 10A to 20A. Using a small 2A or 3A "brick" adapter will likely trigger the adapter's protection mode.

2. Wiring Gauge: Use thick 14AWG or 16AWG copper wires. Thin breadboard wires will melt under the current load this motor can draw.

3. Speed Control: We highly recommend using a DC 40A PWM Speed Controller. Running this motor at full 21,000 RPM constantly can be dangerous for certain attachments.

Primary Applications

• DIY Power Tools: Build your own high-speed mini table saws, grinders, or PCB drills.

• Electric Vehicles: Ideal for high-speed RC cars, DIY go-karts, or scooters.

• High-Velocity Blowers: Create custom vacuum cleaners or high-pressure air blowers.

• Industrial Prototypes: Use in machinery requiring high-speed spindle rotation.

Why Shop at Electrapac?

At Electrapac, we verify the "Double Ball Bearing" status of our motors to ensure you aren't getting a cheaper bushing-style substitute. Visit www.electrapac.com to find this motor, high-current 12V batteries, and 775 mounting brackets.