Kondo B3M-SB-1040-A

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	3072
Category	Robotics
Discontinued	Yes
Performance
Torque	12.0V580.61 oz-in
Speed	12.0V0.22 sec/60°
Stall Current	≤2.8 AAbove Average
Physical
Weight	3.10 ozAverage
Shape	Boxed
Dimensions	L 2.008 in W 1.26 in H 1.26 in
Case Material	Aluminum / Plastic
Drivetrain
Motor Type	Brushless
Gears	Aluminum
Gear Ratio	362.88:1
Rotation Mode	Multi-turn
Control & Signal
Modulation	Digital
Rotational Range	640°
Mechanical Limit	No Limit
Angle Sensor	Magnetic Encoder
Control System	RS-485
Programmable	Yes
Resolution	4,096 pulse/rev
Operating Modes	Position, Velocity
Signal Voltage	5V
Electrical & Environment
Operating Voltage	6–12 V
Power Source	External
Temperature	0–40 °C
Idle Current	0.080 A
Connectivity
Connector	JST
Wire Length	400 mm
Baud Rate	3 Mbps
Origin
Country of Origin	Japan

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*Based on known specs.

Class Comparison

Weight	Average Lighter than 37% of 143 Digital Large servos
Stall Current	Above Average Lower draw than 66% of 97 Digital Large servos

Performance Analysis

Torque Density	6.5978 oz-in/g
Torque-to-Volume Ratio	182.13 oz-in/in³
Speed-to-Weight	0.05165 (1/sec·g)
Speed-Torque Trade-off	127.75
Current-per-Torque Ratio	0.0048 A/oz-in
Voltage Range Width	6.0 V Wider voltage range than 82% of 131 Digital Large servos