Product Details
12V 28mm High Torque Planetary gear DC Motor JQM-28RP385 Home Applicance

1.Main voltage : 6VDC,12VDC, 24VDC
2.Typical applications: Smart Instrument, Digital product, Automatic door-lock, Medical equipment, Security monitoring, Smart home applicances, Robots…
3. Round Gearbox size: 36mmφ*L
4. Torque: 1kgf.cm
5. Direction: CW, CCW
6. Voltage, speed, and shaft can be customized based
Driving Motor Data:
| Motor model | Rated Volt. | No load | Load | Stall |
| Current | Speed | Current | Speed | Torque | power | Torque | Current |
| V | mA | r/min | mA | r/min | gf.cm | W | gf.cm | mA |
| JQM-3850123000 | 12 | ≤70 | 3000 | ≤260 | 1950 | 50 | 1.02 | ≥160 | ≥520 |
| JQM-3850124500 | 12 | ≤90 | 4500 | ≤460 | 3500 | 50 | 1.83 | ≥230 | ≥1300 |
| JQM-3850243300 | 24 | ≤80 | 3300 | ≤250 | 2750 | 74 | 2.13 | ≥290 | ≥440 |
| JQM-3850247400 | 24 | ≤120 | 7400 | ≤370 | 6400 | 60 | 4.02 | ≥420 | ≥1580 |
Technical Data of Gearbox:
| Reduction Stage | 1 | 2 | 3 | 4 |
| Reduction Ratio | 3.7K, 5.2K | 14K, 19K, 27K | 51K, 71K, 100K, 139K | 189K, 264K, 369K, 515K, 721K |
| Gearbox Length “L” mm | 27.5 | 35.5 | 43.5 | 51.5 |
| Gearbox Efficiency | 90% | 81% | 73% | 65% |
Gear Motor Mechanical Size:

What a Model Number Tells You?
We follow some rules to create each model number. A model number would tell you a lot of useful messages. Here is a sample.

So here we can learn that it is a 37mm Round Spur gear motor, 12V driving motor #555, no load input speed 6000rpm and reduction ratio 100:1. Hey, what about output speed? You need to do a little calculation. Input speed 6000rpm ÷ reduction ratio 100 = 60rpm
Gear Motor Electric Data:
| Motor model | Rated Volt. | No load | Load | Stall |
| Current | Speed | Current | Speed | Torque | Output power | Torque | Current |
| V | A | r/min | A | r/min | kgf.cm | W | kgf.cm | A |
| JQM-28RP3850124500-27K | 12.0 | 0.11 | 163.7 | 0.35 | 126.0 | 1.5 | 1.92 | 6.4 | 1.16 |
| JQM-28RP3850126000-51K | 12.0 | 0.14 | 114.1 | 0.49 | 90.9 | 2.7 | 2.53 | 13.3 | 1.86 |
| JQM-28RP38501215000-51K | 12.0 | 0.68 | 295.2 | 2.28 | 225.3 | 4.8 | 10.99 | 20.0 | 7.45 |
| JQM-28RP38501226000-71K | 12.0 | 1.22 | 344.1 | 4.68 | 263.4 | 8.2 | 22.11 | 34.8 | 15.96 |
| JQM-28RP3850243000-139K | 24.0 | 0.05 | 25.1 | 0.16 | 18.8 | 6.5 | 1.26 | 26.2 | 0.48 |
| JQM-28RP3850243300-100K | 24.0 | 0.04 | 33.4 | 0.16 | 26.3 | 5.2 | 1.40 | 24.4 | 0.60 |
| JQM-28RP3850243500-100K | 24.0 | 0.05 | 36.4 | 0.15 | 28.4 | 4.4 | 1.30 | 20.2 | 0.53 |
| JQM-28RP3850244500-5.2K | 24.0 | 0.07 | 805.1 | 0.22 | 577.0 | 0.3 | 1.83 | 1.1 | 0.57 |
| JQM-28RP3850244500-71K | 24.0 | 0.05 | 64.3 | 0.18 | 48.3 | 3.2 | 1.60 | 12.9 | 0.59 |
| JQM-28RP3850246000-27K | 24.0 | 0.09 | 204.0 | 0.30 | 149.6 | 1.7 | 2.60 | 6.3 | 0.86 |
| JQM-28RP3850246000-189K | 24.0 | 0.08 | 29.9 | 0.28 | 22.6 | 9.3 | 2.17 | 38.2 | 0.91 |
| JQM-28RP3850246000-515K | 24.0 | 0.11 | 10.8 | 0.30 | 8.0 | 18.4 | 1.51 | 72.0 | 0.85 |
Professional Factory:

Certificate Photos :

Packing:

Transportation:

Motor Application Fields:
FAQ:
Q:How long is the lead time of orders?
A:Lead time : 4 weeks after receive the deposit
Q:What is your trade Assurance?
A:100% product quality protection.
100% product on time shipment protection.
100% payment protection for your covered amount.
Q: What’s Moq?
A: 5PCS. Small Order Welcome.
Q:Do You Make Customized Product?
A:Yes,We Accpet IT.
Q:About After Sale Serive?
A: After Sales Services 24/7.
Q: What should I do if I'm not satisfied with your product?
A: If there are defects in its quality, we can exchange a good one for you.
Generally, this problem is rare.
Q:What is the payment term?
A:T/T and Paypal is used more,please contact us for details
Q:What is the quality level of your product?
A:We produce good quality, refuse to produce low quality.
Our motor products contain range:

Company Profile
Changzhou Junqi Mechanical Electronics Co.,Ltd is a professional Exporter relies on five parnter physical
factories.
The main products: Auto Parts( Power window switch,Auto electric
water pumps, Auto lock, Door handle, Wipper motor and window
regulator motor), Stepping motor and driver, Brushless DC motor and
driver, DC Gear Motor, PM Step motor, Brushless dc blower and
Special power supply ( Deuterium lamp and power supply)
80% of our products are produced by our Production-oriented partner
factories,our products are stable and reliable performance with
powerful technical support, so we can offer comprehensive product
solutions to our clients with competitive development ability.we
are specialized and experienced inindustrial electrical products,we
have our own superb core technology and mature product line,even we
have our own OEM controlling microchip. as most of Junqi products
are directly come from the manufacturers (our partner
factories),our products are more competitive pricing,more powerful
developing ability,faster response and professional service.
Our partner factories can provide talented individuals with access
to advanced technology and cutting-edge equipment, ensuring the
yield of high-quality products. the partner factories have
successfully passed the quality management system certification for
the ISO9001, IATF16949 and ISO14001 etc. These are to ensure that
all the goods received by our customers pass the inspection.

