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57mm Geared Brushless DC Motor

57mm Geared Brushless DC Motor

Having a frame size of Φ57mm, the 57mm geared BLDC motors combine SIT’s 57 series economy planetary gearbox with round 57mm brushless DC motors. This series geared motors offer 4 different models, featuring a broad gear ratio range from 3:1 to 250:1. This reduction capability empowers the motor to provide enhanced torque output and finer control of motion.

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Product Introduction

Mechanical Dimension 

Mechanical Dimension

 

General Specification

Winding Type star
Hall Effect Angle 120°(Electrical Angle)
Shaft Axial Play 0.025mm
Ambient Temperature 0℃-+50℃(Without Condensation))
Ambient Humidity ＜85% (Without Condensation)
Max. Radial Force 250N
Max. Axial Force 100N
Insulation Class class B
Dielectric Strength one minute@500VAC.5mA
Insulation Resistance 100MΩ Min.@500VDC

 

Electric Connection

Lead NO. Lead Color Lead Gauge Connection
1 Red UL1007/26AWG VCC
2 Black GND
3 Yellow HALL A
4 White HALL B
5 Blue HALL C
6 Orange UL1007/22AWG Phase U
7 Green Phase V
8 Brown Phase W

 

Gearbox Parameter

Stage One stage Two stage Three stage
Reduction ratio 3 4 5 7 9 10 15 16 20 25 28 35 40 50 100 100 125 140 175 200 250
Length 1(mm) 50.5 62 80
Length 2(mm) 50 61 79
Rated load (Nm) 6 20 25
Backlash （°） 0.8°Max 1.6°Max 2.4°Max
Nominal input speed(rpm) 3000rpm

 

Technical Specification

Model No. Back EMF Constant Rated Voltage Speed Rated Torque Power Rated Current No-load Speed No-load Current Resistance/line-line Inductance/line-line Length
  V/krpm VDC rpm N.m W A rpm A Ω mH mm
57BL02202-0012-XXX 9.8 24 2000 0.057 12 0.77 2800 0.15 4.8 7.56 40
57BL02402-0020-XXX 5.7 24 4000 0.048 20 1.07 4660 0.16 1.73 2.8 44
57BL02202-0050-XXX 4.8 24 4000 0.119 50 2.8 5200 0.24 1 1.9 50
57BL02102-0040-XXX 16.7 24 1000 0.382 40 2.5 1700 0.15 1.9 5.7 70

Remark: Customers only need to provide the speed and torque of the finally completed motor, and we will choose the suitable motor and gearbox for your application.

 

FAQ

Q: What is a geared brushless DC motor?

A: A geared brushless DC motor is a type of electric motor that uses a brushless design for improved efficiency and durability, coupled with a gearbox (gear reduction mechanism) to control and optimize the output speed and torque.

 

Q: What are the advantages of using a brushless DC motor with gears?

A: The combination of a brushless design and a gearbox offers several benefits, including higher efficiency, precise speed control, increased torque, reduced noise, and longer lifespan compared to brushed motors.

 

Q: Where are geared brushless DC motors used?

A: They are commonly used in various applications, such as robotics, automation, electric vehicles, drones, medical devices, and industrial equipment, where precise control of speed and torque is required.

 

Q: How do you ensure quality control?

A: Quality control is paramount to us, and we enforce stringent measures to maintain consistent product quality. Throughout the entire production process, we conduct meticulous testing and inspections to verify each motor's performance and reliability. This rigorous quality control ensures that only high-quality products reach our esteemed customers.

 

 

 

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