Graupner HBS 880 BBMG

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Technical Specifications

Last Updated: 2026-10-09

Identity
Brand
Product Number	S7992
Category	Hobby
Performance
Torque	7.4V 138.89 oz-in 6.0V 118.06 oz-in 4.8V 111.11 oz-in Below Average
Speed	7.4V 0.07 sec/60° 6.0V 0.09 sec/60° 4.8V 0.11 sec/60° Above Average
Physical
Weight	2.43 ozAverage
Dimensions	L 1.575 in W 0.787 in H 1.575 in
Drivetrain
Motor Type	Brushless
Gears	Steel
Gear Spline/Teeth	25 T
Rotation Mode	Positional
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	90°
Pulse Cycle	2.5 ms
Neutral Position	1500 µs
Control System	PWM
Programmable	Yes
Electrical & Environment
Operating Voltage	4.8–8.4 V
Idle Current	0.047 A
Connectivity
Connector	JR (Universal)

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*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 22% of 1043 Digital Standard servos at 4.8V
Speed	Above Average Faster than 71% of 1041 Digital Standard servos at 4.8V
Weight	Average Lighter than 36% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	1.87–3.67 W
Power Density	1.879 W/in³ More power-dense than 41% of 1759 Digital Standard servos
Torque Density	1.6103 oz-in/g Stronger than 12% of 1036 Digital Standard servos
Torque-to-Volume Ratio	56.90 oz-in/in³ Denser torque than 19% of 1042 Digital Standard servos
Speed-to-Weight	0.13175 (1/sec·g) Faster than 61% of 1033 Digital Standard servos
Speed-Torque Trade-off	12.22 Better balanced than 18% of 1031 Digital Standard servos
Voltage Range Width	3.6 V Wider voltage range than 86% of 1539 Digital Standard servos