U825-042W

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The U825-042W servo motor delivers a rated output of 42 W, a rated rotating speed of 3000 min-1, a rated armature voltage of 70 V, and weighs 0.45 kilograms. Part of the Super DC Servo Motors series by Sanyo Denki, it offers a continuous stall torque of 0.151 Nxm for reliable performance.

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Product Description:

The U825-042W is designed by Sanyo Denki to deliver a rated torque of 0.134 Nxm while working at high speed. This motor that uses a rated armature voltage of 70 V works well specifically in situations where portability, energy-efficiency and simplicity of electrical design are desired. This voltage is also low enough to be used in equipment running on battery, or in movable units, like automated guided vehicles (AGVs) or small-scale service robots, where a high-voltage system would be unsafe. It also eliminated the requirement of complicated high-current protection circuits, thereby saving operation cost and system weight. Its good control responsiveness and the ability to work with off-the-shelf DC converters or even low-voltage drives are enabled by the 70 V voltage rating.

It operates at a rated armature voltage of 70 V and delivers a rated rotating speed of 3000 min?, offering stable and consistent performance across a range of light-duty applications.

Despite its small size, the U825-042W features a constant stall torque of 0.151 Nxm, allowing it to sustain loads without overheating. For short-term demands, it offers a momentary maximum stall torque of 0.588 Nxm, while supporting quick acceleration and deceleration in dynamic applications. It boasts a torque constant of 0.157 Nxm/A and an induced voltage constant of 16.1 mV/min?, ensuring effective torque generation and reliable feedback in closed-loop systems.

Weighing only 0.45 kg with the encoder and other internal components, the U825-042W is lightweight and easy to install, even in tight spaces. Its electrical time constant of 0.41 ms contributes to fast response times and smooth motion control. It offers excellent energy control and helps reduce power loss with an armature resistance of 14 ?.

Armature Resistance
14 ?
Continuous Stall Torque
0.151 Nxm
Electrical Time Constant
0.41 ms
Induced Voltage Constant
16.1 mV/min?
Maximum Rotating Speed
3000 min-1
Mechanical Time Constant
5.1 ms
Momentary Maximum Stall Torque
0.588 Nxm
Motor Weight (including Encoder)
0.45 kg
Rated Armature Current
0.86 A
Rated Armature Voltage
70 V
Rated Output
42 W
Rated Rotating Speed
3000 min-1
Rated Torque
0.134 Nxm
Stall Armature Current
1.16 A
Torque Constant
0.157 Nxm/A

Frequently Asked Questions about U825-042W:

Q: What is the rated output of the U825-042W motor?

A: The U825-042W motor has a rated output of 42 watts.

Q: What is the continuous stall torque of the U825-042W motor?

A: The continuous stall torque of the U825-042W motor is 0.151 Nm.

Q: What is the rated armature voltage of the U825-042W motor?

A: The rated armature voltage of the U825-042W motor is 70 volts.

Q: What is the armature resistance of the U825-042W motor?

A: The armature resistance of the U825-042W motor is 14 ohms.

Q: What is the motor weight including the encoder for the U825-042W motor?

A: The total weight of the U825-042W motor including the encoder is 0.45 kg.


Internal Product Review

  • ‘‘The U825-042W delivers excellent thermal stability and energy efficiency. Its fast response time and reliable braking make it ideal for lightweight systems that demand quick torque delivery and consistent performance.’’

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