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Graupner HBM 660 BBMG
Standard

Graupner HBM 660 BBMG

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-26
Identity
Brand Graupner
Product Number S4070
Category Hobby
Performance
Torque
7.4V 120.83 oz-in
6.0V 100.00 oz-in
4.8V 80.56 oz-in Below Average
Speed
7.4V 0.13 sec/60°
6.0V 0.16 sec/60°
4.8V 0.20 sec/60° Below Average
Physical
Weight 1.52 ozTop 10%
Dimensions L 1.378 in
W 0.63 in
H 1.378 in
Drivetrain
Motor Type Brushless
Gears Steel
Gear Spline/Teeth 25 T
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Pulse Cycle 5 ms
Neutral Position 1520 µs
Refresh Rate 200 Hz
Control System PWM
Electrical & Environment
Operating Voltage 4.8–7.4 V
Connectivity
Connector JR (Universal)

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Class Comparison

TorqueBelow Average
Stronger than 12% of 1055 Digital Standard servos at 4.8V
SpeedBelow Average
Faster than 11% of 1038 Digital Standard servos at 4.8V
WeightTop 10%
Lighter than 93% of 1872 Digital Standard servos

Performance Analysis

Shaft Power 0.74–1.72 W
Power Density1.437 W/in³
More power-dense than 29% of 1762 Digital Standard servos
Torque Density1.8735 oz-in/g
Stronger than 19% of 1048 Digital Standard servos
Torque-to-Volume Ratio67.35 oz-in/in³
Denser torque than 25% of 1053 Digital Standard servos
Speed-to-Weight0.11628 (1/sec·g)
Faster than 52% of 1031 Digital Standard servos
Speed-Torque Trade-off16.11
Better balanced than 26% of 1029 Digital Standard servos
Torque Gain per Volt19.23%/V
More voltage-responsive (torque) than 75% of 868 Digital Standard servos
Speed Gain per Volt20.71%/V
More voltage-responsive (speed) than 79% of 868 Digital Standard servos
Voltage Range Width2.6 V
Wider voltage range than 66% of 1552 Digital Standard servos

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