Model: Jkongmotor 42mm JK42BLS 12V 24V 36V BLDC Geared Motor with Planetary Gearbox 42x42mm
In general, there are three different types of gearboxes: concentric, parallel, and right angle.
The torque that is required in order to bring the gearbox in motion, in other words: in order to overcome the internal friction from standstill. The lower the number, the higher the efficiency and the more power of the motor is left for the movement.
Gearbox efficiency is the ratio of the output torque divided by the product of the input torque times the overall gear ratio. The overall gear ratio is the total gear reduction in the gearbox—the number of motor revolutions required for one revolution of the stem nut.
General Specification of 42BLS DC Brushless Motors:
Number Of Phase
Number Of Poles
Degree of Protection
85% RH or below (no condensation)
Outdoor (no direct sunlight), no corrosive gas, no flammable gas, no oil mist, no dust
1000 meters or less
Mini Planetary Gearbox Electrical Specification:
|Ring material||Metal / Powder metal|
|Bearing at output||Ball bearings|
|Max. Radial (12mm from flange)||200N|
|Max. shaft axial load||100N|
|Radial play of shaft (near to flange)||≤0.06mm|
|Axial play of shaft||≤0.3mm|
|Backlash at no-load||≤2.5°|
|Shaft press fit force, max||150N|
|Suitable Brushless DC Motor Shaft Pinion Specifications|
|No. of teeth||11||17|
|Hole diameter||Φ3.16 Φ3.98 Φ4.48|
|Reduction ratio||1/5.18 1/19 1/27 1/71 1/100 1/139 1/253 1/305 1/354 1/426 1/495 1/596||1/3.71 1/14 1/51 1/181 1/218|
|Planetary Gearbox Specifications:|
|Reduction ratio||Exact reduction ratio||Rated tolerance torque||Max momentary tolerance torque||Efficiency||L (mm)||Weight (g)|
|1/3.7 1/5.2||1/3.71 1/5.18||1.0 N.m Max||3.0 N.m||90%||31.5±0.5||244|
|1/14 1/19 1/27||1/13.73 1/19.20 1/26.85||4.0 N.m Max||12 N.m||81%||42.1±0.5||314|
|1/51 1/71 1/100 1/139||1/50.89 1/71.16 1/99.51 1/139.14||8.0 N.m Max||25 N.m||73%||52.5±0.5||433|
|1/181 1/218 1/253 1/305 1/354 1/426 1/495 1/596||1/180.96 1/218.12 1/253.03 1/304.99 1/353.80 1/426.46 1/494.71 1/596.31||10 N.m Max||30 N.m||66%||62.9±0.5||519|
|Input & output same rotation direction; Motor Max. input speed: <8000rpm; Operating temperature range: -15℃ ~ +80℃|
Planetary Gearbox Drawing:
JK42BLS 12v 24v Brushless DC Geared Motor Dimensions: (Unit=mm)
Product Type: JK42BLS Geared BLDC Motor with Planetary Gearbox
Place of Origin：china
Minimum order quantity：10pcs
Material Science：stator, rotor, stainless steel shaft, copper wire, magnetic steel...
Feature summary: Low Inertia,Quick Feedback; High Torque,High Efficiency; Small Vibration,Low Noise
Packing：The sample is packed in carton,the batch with plastic pallet
Delivery time：Standard product: 7-10days
Customized product: 25-30days
Transaction mode：EXW, FOB, FCA, CIF, FAS, CFR, CPT, CIP, DAF, DEQ, DDU, DDP...
APPLICATION：Medical equipment: medical pumps, stirring instruments, peristaltic pumps, biopharmaceutical equipment. Industrial equipment: winding machines, printing machines, robots, grinding, cutting, drilling, automatic conveying systems, automatic positioning systems, level control systems, electric actuators, electric valves, vending machines.
If this motor do not match with your request. Please feel free to contact with us,We can make customized shaft / winding / mounting flange / cable / connector / Encoder / Brake / Gearbox and others. We will works side-by-side with you and your team to design a motor that will fit the precise needs of your application. All Engineering and Support is done in-house.
Customized Shaft Types: