Hitec HSR-2645CR

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09

Identity
Brand
Product Number	32645H
Category	Robotics
Performance
Torque	7.4V 167.00 oz-in 6.0V 139.00 oz-in 4.8V 111.00 oz-in
Speed	7.4V 0.14 sec/60° 6.0V 0.17 sec/60° 4.8V 0.22 sec/60°
Running Current	7.4V 0.140 A 6.0V 0.120 A 4.8V 0.110 A
Stall Current	1.7–2.4 AAbove Average
Physical
Weight	1.87 ozAbove Average
Shape	Boxed
Dimensions	L 1.59 in W 0.77 in H 1.48 in
Case Material	Plastic
Drivetrain
Motor Type	Cored
Motor Drive	MOS
Gears	Metal
Gear Spline/Teeth	24 T
Rotation Mode	Continuous
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Direction	Bidirectional
Pulse Width	900-2100 µs
Neutral Position	1500 µs
Control System	PWM
Programmable	Yes
Electrical & Environment
Operating Voltage	3.5–8.4 V
Temperature	-20–60 °C
Water Rating	IP4X
Idle Current	0.003 A
Connectivity
Connector	JR (Universal) estimate
Wire Length	300 mm

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*Based on known specs.

Class Comparison

Weight	Above Average Lighter than 80% of 1902 Digital Standard servos
Stall Current	Above Average Lower draw than 80% of 539 Digital Standard servos

Performance Analysis

Shaft Power	0.94–2.22 W
Power Density	1.227 W/in³ More power-dense than 24% of 1759 Digital Standard servos
Torque Density	2.0943 oz-in/g
Torque-to-Volume Ratio	61.26 oz-in/in³
Speed-to-Weight	0.08679 (1/sec·g)
Speed-Torque Trade-off	24.13
Current-per-Torque Ratio	0.0216 A/oz-in
Idle-to-Running Current Ratio	0.027
No-Load vs Stall Current Spread	21.82
Voltage Range Width	4.9 V Wider voltage range than 97% of 1539 Digital Standard servos