









- Stock: In Stock
- SKU: TECH7148
- Brand: Ketrix
20 RPM 12V DC Johnson Geared Motor Grade-A is a high performance DC geared Johnson motor with metal gear box used for high torque application and other automation purposes. The motor comes with 6mm off-centered shaft (side shaft) and M3 holes for mounting. It is different from the regular Johnson for its very high reliability (mainly of its gears) and the shaft length of 30mm(comes with a hole on the shaft).
This Johnson Geared Motor from techtonics.in provides torque which falls intermediate to the torques by center shaft gear motors and side shaft dc gear motors, at a reasonable cost!!!!
It is a simple DC motor featuring metal gearbox for driving the shaft of the motor, so it is a mechanically commutated electric motor which is powered from DC supply. The Johnson Geared Motors are known for their compact size and massive torque-speed characteristic.
The Johnson Motor comes with side shaft also known as an off-centered shaft and six M3 mounting holes. The shaft of the motor equips metal bushes which makes these DC gear motors Shaft wear resistant. The shaft of the motor has a hole for better coupling.
The motor will run smoothly between the voltage 12V and give you 20 RPM at 12V supply. It provides the torque of 40.12 kg-cm at 10 RPM. These Grade A Quality Johnson DC Motors are well known for their reliability.
Also, they are best suitable with highly developing capable robots or robotic platform, various automation purposes.
Features :
- Grade A Imported Quality branded Johnson DC Motor.
- It has sturdy construction.
- Shaft equips metal bushes for long life.
- It comes with High-Quality gears.
- The shaft has a hole for better coupling.
Specifications:
Operating Voltage (VDC) |
12 |
Nominal Voltage (V) |
12 |
Gear Ratio |
221: 1 |
Gear Material |
Powder Metallurgy |
No Load Speed (RPM) |
20 |
Rated Speed (RPM) |
16 |
Rated Torque (kg-cm) |
11.8 |
Stall Torque (N-cm) |
40.12 |
Rated Power (W) |
4.8 |
No-Load Current (mA) |
106 |
Load Current Max (mA) |
400 |
Input Power (W) |
4.8 |
Output Power(Watt) |
1.68 |
Shaft Diameter (mm) |
6 |
Shaft Length (mm) |
30 |
Gearbox Diameter (mm) |
22.5-32.5 |
Motor Diameter(mm) |
32 |
Motor Length (mm) |
46.7 |
Weight (gm) |
240 |
Applications:
- User dependent applications.
- Ideal for serious and hobby projects.
Note:
We are selling 2 types of Johnson Motors as “Johnson Geared Motor – Grade A” and “Johnson Geared Motor – Grade -B“, the only difference between them is the quality of materials used for manufacturing the motor. All other specification including look, dimensions, working etc. are same. The “Grade A Quality” motors are imported and shows slightly more torque count than “Grade-B” Johnson Motors which are made in India and hence dominates “Grade-B” quality motors. So, the Johnson Geared Motor – Grade A Quality costs little more than Johnson Geared Motor – Grade-B.
Package Includes:
- 1 x 20 RPM 12V DC Johnson Geared Motor Grade-A
Operating
Voltage(VDC) |
6 to 18 |
Nominal
Voltage (V) |
12 |
Rated
Base Motor RPM |
18000 |
Gear
Material |
Metal |
Rated
RPM |
20 |
Rated
Torque (kg-cm) |
37 |
Stall
Torque (kg-cm) |
60 |
No-Load
Current |
300 mA |
Load
Current(A) |
3 |
Shaft
Diameter (mm) |
6 |
Shaft
Length (mm) |
30 |
Gearbox
Diameter (mm) |
37 |
Motor
Diameter(mm) |
27 |
Motor
Length(mm) |
66 |
Weight
(gm) |
165 |