Graupner HCM 880 BBMG

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-24

Identity
Brand
Product Number	S4074
Category	Hobby
Performance
Torque	7.4V 277.78 oz-in 6.0V 222.22 oz-in 4.8V 180.55 oz-in Average
Speed	7.4V 0.08 sec/60° 6.0V 0.09 sec/60° 4.8V 0.11 sec/60° Above Average
Physical
Weight	2.54 ozBelow Average
Dimensions	L 1.57 in W 0.79 in H 1.59 in
Case Material	Aluminum
Drivetrain
Motor Type	Coreless
Gears	Metal
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Programmable	Yes
Electrical & Environment
Operating Voltage	4.8–8.4 V
Connectivity
Connector	JR (Universal)

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Average Stronger than 41% of 1055 Digital Standard servos at 4.8V
Speed	Above Average Faster than 75% of 1038 Digital Standard servos at 4.8V
Weight	Below Average Lighter than 30% of 1872 Digital Standard servos

Performance Analysis

Shaft Power	3.18–6.85 W
Power Density	3.473 W/in³ More power-dense than 66% of 1762 Digital Standard servos
Torque Density	2.5076 oz-in/g Stronger than 32% of 1048 Digital Standard servos
Torque-to-Volume Ratio	91.55 oz-in/in³ Denser torque than 39% of 1053 Digital Standard servos
Speed-to-Weight	0.13228 (1/sec·g) Faster than 63% of 1031 Digital Standard servos
Speed-Torque Trade-off	18.96 Better balanced than 33% of 1029 Digital Standard servos
Voltage Range Width	3.6 V Wider voltage range than 85% of 1552 Digital Standard servos