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The original and still one of the most rebadged servos on the planet. The SG51R is a powerful 5 gram budget micro servo that was just made for small foamies and profile planes. It features a standard universal servo connector on a 150mm wire and is designed for 4.8-6.0V DC operation. This servo is very happy on the standard 5V supply from the majority of onboard battery eliminator circuits.

This is almost exactly the same size as the Gening D561, so you can use it as a drop-in replacement.

Includes 3 servo arms and 2 mounting screws.

Genuine Tower Pro item.

For full servo specifications, please refer to the specification tab above. A list of similar servos is also shown, where available, and is based on torque values only. All of our servos include standard manufacturers fittings.

Please note, as we buy our servos in bulk, many of the analogue Hitec servos are shipped to us packed like this, individual servos may therefore arrive loose-packed. Please do not grab and rotate servo arms by hand – this is not good for the gears and with todays light-weight servos can easily strip gears. A servo tester is a worthwhile investment.

Servos similar to the TowerPro SG51R Digital 5g Micro Servo

Torque in kg·cm
Servo 4.8V 6.0V 7.4V Weight Price Stock
 TowerPro SG51R Digital 5g Micro Servo (This one) 0.60 0.80 - 5.0g $4.13
 Gening D541BB Digital Nano Servo 0.70 0.80 - 5.0g $5.75
 Gening D531BB Digital Nano Servo 0.50 0.60 - 4.0g $5.87
 Gening D531MG Digital Nano Servo 0.50 0.70 - 5.0g $6.76
 HS-40 Nano Nylon Gear Servo 0.60 0.75 - 5.0g $9.16

Technical Details for TowerPro SG51R Digital 5g Micro Servo

Torque @ 4.8V (kg·cm)0.6
Torque @ 6.0V (kg·cm)0.8
Torque @ 7.4V (kg·cm)-
Speed0.08 / 0.07 sec @ 60°
Bearing Type-
Motor TypeCoreless
Dimensions (mm)21.5x22.5x11.8
Weight5.0g (0.2oz.)
$4.13
$4.96 inc. VAT
Based on base price of £3.95 inc. VAT
in stock
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