303 RPM Gear Motor

· Operating Range: 3-12VDC
· Torque @ Max Efficiency: 3.5 oz-in.@12VDC
· Torque @ Stall: 16.8 oz-in.@12VDC
· .240” (6mm) Diameter Shaft
· No load current: 45mA
· No load current @ Max Efficiency: 95mA (12V)
· No load speed: 303 RPM
· No load speed @ Max Efficiency: 239 RPM
· Gear ratio: 10:1
· Motor size: 1.30"Dia. x 1.03"L
· Gear size: 1.45"Dia. x .870"L
· Shaft size: 0.24" (6mm) Dia. x 0.715"L
· Weight: 0.2563 lbs. (4.1 oz.)
· DC reversible motors
· Solder type terminal
· High torque construction
· Oil bearing design for long service life
· Insulation resistance: 10 MOhm
· Dielectric Strength: 300VDC

Stall Torque is the torque which is produced by a motor when the output rotational speed is zero, it may also mean the torque load that causes the output rotational speed of a motor to become zero - ie to cause stalling.
Electric motors continue to provide torque when stalled. However, electric motors left in a stalled condition are prone to overheating and possible damage since the current flowing is maximum under these conditions.

Gearmotor Accessories

Click on the picture for further information.

Shaft Hubs

Mounting Screws

Motor Mounts

Power Supplies

Need more power or slower speed than this gearmotor produces? Simply put the gearmotor on this page into our new gearmotor gearbox. This unit includes an 8.45:1 gear reduction and ultra smooth 48 pitch metal gears. The 3/8” diameter stainless steel shaft is supported by precision dual ball bearings. The rigid frame is machined from 6061-T6 aluminum, anodized black and weighs only 14.4oz. (not including gearmotor). Six outer .140” diameter holes on the frame accept #6 screws for mounting. Includes a 203 tooth aluminum spur gear and a 6mm bore 24 tooth pinion gear. The 3/8” bore hub is tapped for 5-40 machine screws to easily mount various attachments. The frame will easily support 150 pound both vertically and horizontally. Click on the gearbox picture for more information.

Controller Options

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Proportionally varying the speed of your gearmotor is very easy. A digital speed control can precisely vary the speed of your gearmotor both forward and reverse when coupled with one of the five servo controllers shown below.