Ask any competition IMAC flyer or serious giant scale 3D enthusiast what their servo of choice is, and you'll undoubtedly hear the DS8911 mentioned more often than not. This isn't by accident- the DS8911 provides the perfect blend of brute strength and precision at a price point that won't break the bank.
Based on the previous DS8911 and NX8921, the new NX8931 features updated firmware, optimized for performance and efficiency, and a new modified and reinforced top case for increased durability.
Featuring automatic output detection, these new JR Smart ServosTM can be used with either conventional (PWM) or XBus installations for ease and flexibility. Programming is simple via your XBus-equipped JR XG-series DMSS transmitter, and not only can servo direction and travel be adjusted, but it is now possible to fine tune holding power, stopping speed, dead band, starting power, total servo travel, create an alarm if servo load exceeds a user-set limit, enable slow start, as well as enhanced failsafe features to help protect your servos in the event of signal loss.

• Torque: 319.2 (4.8V)/411.0 (6.0V)/506.8 (7.4V)
• Input Voltage: 4.8-8.5v , Shaft Support: Dual Ball Bearing
• Speed: 0.20 (4.8V)/0.16 (6.0V)/0.13 (7.4V)
• Comparable to DS8911HV
• US Shipping : Average 10~12 days.

Torque: 319.2 (4.8V)/411.0 (6.0V)/506.8 (7.4V)JR