28mm metal planetary gearbox with brushless dc motor for smart
robots
Model: 28PA2838
Tytical Application:
Electric Curtains
Smar robots
Vending Machine
ATM
Printer
Precision Instruments
Features:
Combine with 28mm brushless dc motor
Shaft can be custom made such as threaded shaft
Special customized gears available
Oil-impregnated bearing or ball bearing
28mm high precision metal planetary gearbox
1-4 gear stage
Speed 10rpm-500rpm
output power 2.0-40.0W
Rated torque 5kg.cm-20kg.cm
The brushless dc motor can control the speed via PWM, and brake
function available.
Pin arrangement
1. VCC (red wire)
2. FG (Green wire)
3. CW/CCW (Yellow wire)
4. GND (black wire)
5. PWM (Blue wire)
Product Showcase:
Outline Drawing:
Gearbox Reduction Ratio:
| Gearbox Length (mm) | Stage Number | Reduction Ratio | Rated Torque | Bearable Maximum Instant Torque |
| kg.cm |
| 27.5 | 1 | 3.7/1 | 5.2/1 | | | | | 5.0 | 10.0 |
| 35.5 | 2 | 14/1 | 19/1 | 27/1 | | | | 8.0 | 20.0 |
| 43.5 | 3 | 51/1 | 71/1 | 100/1 | 139/1 | | | 15.0 | 30.0 |
| 51.5 | 4 | 189/1 | 264/1 | 369/1 | 515/1 | 721/1 | | 20.0 | 40.0 |
Motor Performance:
MODEL | REDUCTION RATIO | VOLTAGE | NO LOAD | AT MAXIMUM EFFICIENCY | STALL |
| OPERATING RANGE | NOMINAL | SPEED | CURRENT | SPEED | CURRENT | TORQUE | OUTPUT | TORQUE | CURRENT |
| V | rpm | A | rpm | A | kg.cm | W | kg.cm | A |
| 28PA2838-27-12330 | 27/1 | 8.0~15.0 | 12.0 | 330 | 0.25 | 264 | 1.2 | 2.5 | 6.77 | 12.68 | 5 |
| 28PA2838-71-12125 | 71/1 | 8.0~15.0 | 12.0 | 125 | 0.25 | 100 | 1.2 | 6.9 | 7.08 | 34.25 | 5 |
| 28PA2838-139-1264 | 139/1 | 8.0~15.0 | 12.0 | 64 | 0.25 | 52 | 1.1 | 12 | 6.40 | 65.8 | 5 |
| 28PA2838-264-2435 | 264/1 | 8.0~26.0 | 24.0 | 35 | 0.2 | 30 | 0.8 | 20 | 6.15 | 156.8 | 4.6 |
| 28PA2838-515-2418 | 515/1 | 8.0~26.0 | 24.0 | 18 | 0.21 | 16.2 | 0.7 | 30 | 4.98 | 309.4 | 7.8 |
The Shaft and the motor performance such as voltage and speed can
be custom made.
Here attached the PDF spec.
28PA2838.pdf
Why Us
1. 100% inspection in production.
2. fast response within 24h
3. Professional experts at both gearbox and motors
4. All the gears are produced by hobbing machine
5. Experienced sales engineer for international communication
6. Accessories available
FAQ
Q: How to order?
A: send us inquiry → receive our quotation → negotiate details →
confirm the sample → sign contract/deposit → mass production →
cargo ready → balance/delivery → further cooperation
Q: How about Sample order?
A: Sample is available for you. please contact us for details. Once
we charge you sample fee, please feel easy, it would be refund when
you place formal order.
Q: Which shipping way is available?
A: DHL, UPS, FedEx, TNT, Sea are available.The other shipping ways
are also available, please contact us if you need ship by the other
shipping way.
Q: How long is the deliver[Producing] and shipping?
A: Deliver time depends on the quantity you order. usually it takes
15-25 working days.
Q: My package has missing products. What can I do?
A: Please contact our support team and we will confirm your order
with the package contents.We apologize for any inconveniences.
Q: What's your lead time?
A: Generally speaking, our regular standard product will need
25-30days, a bit longer for customized products. But we are very
flexible on the lead time, it will depends on the specific orders
Q: What's your payment term?
A: For all our new customers, we will need 40% deposite, 60% paid
before shipment.
Q: When will you reply after got my inquiries?
A: We will response within 24 hours once get your inquires.
