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electric spindle dc brushless motor 7.5kw 12000rpm
Note: All of our brushless dc motor need to work together with speed controller, speed controller need to buy by separately.
Product Description
The Reacher Tech RTD90 Series motor rotor was designed with segmentation magnets, which can reduce eddy current in the magnets andgenerate less heat.
The motor is original designed for Surfboard with water cooling function which can vanish the heat generated by stator with the water flowing through the cooling pipe. Meanwhile, the motor itself also has the air cooling ability to vanish the heat from stator and magnets to let the motor output greater power. The motor body shell is made of Light and solid 7075 aluminum alloy, all the motors from this series have wide range of RPM and can output powerful torque.
The motor rotor was made with high mgnets strength, the stator was made with very thin and high quality lamination, so the motor have very high efficiency ,very high power/torque output .
Both the stator and the rotator of this motor have been processed with the waterproof coating that let the motor perform well in splash proof in the moist and wet, freshwater environmental conditions. It also can prevent from from Oxidation and corrosion.
Furthermore, the manufacturing cost is favorable with the durable service life . Such characteristics make it become the best candidate of power in the devices like water parks and underwater robots.
Feature
1. Segmentation magnets design, which can reduce eddy current in the magnets and generate less heat.
2. Light, High strength 7075 alloy motor shell with blaster and black anodize,can prevent from Oxidation and corrosion.
3. High quality Imported Japan Brand ball bearing with high energy efficiency and very low noise and vibration.
4. The rotor have good dynamic balance,the vibration of the motor is very low .
5. High performance magnet: 45SH Grade, temperature resistance up to 150 Centigrade .
6. High grade,high temperature resistant copper wire with high insulation .Working Temperature Range from -60℃~180℃
7. High power density ,High torque, and high efficiency,High RPM .
8. Combine the water cooling and air cooling feature.
9. Coated both on the stator and rotor, the motor can be applied in splash water or wet condition.
10. The stator use 0.1mm lamination,stator magnetic loss is very small and made the motor have very high power output .
Product Parameters
| RT Model No | D90L96-335 | D90L96-270 | D90L96-225 | D90L96-195 | D90L96-170 | D90L96-150 |
| Winding turn (Coils) | 4T | 5T | 6T | 7T | 8T | 9T |
| Coil resistance(mΩ) | 2.5±0.5 | 3.7±0.5 | 4.9±0.5 | 6.3±0.5 | 7.6±0.5 | 10±0.5 |
| Coil inductance(uH) | 2.3±0.2 | 3.7±0.3 | 4.3±0.3 | 6.1±0.4 | 8.7±0.5 | 11.4±0.5 |
| Working Voltage Range (Cells of LiPo) | 6-10S | 8-12S | 10-14S | 12-16S | 14-18S | 14-22S |
| Max Spin Speed (RPM) | 14070 | 13608 | 13230 | 13104 | 12852 | 13860 |
| Speed Constance KV(RPM/V) | 335 | 270 | 225 | 195 | 170 | 150 |
| Torque Constance Kt(N*M/A) | 0.0348 | 0.0412 | 0.0491 | 0.0573 | 0.0641 | 0.0712 |
| Current @8.4V without Loading | 6.4A | 4.6A | 3.4A | 3.0A | 2.5A | 2.2A |
| Max Power(KW) | 9.5 | 10.4 | 12 | 13.3 | 15.6 | 18 |
| Peak Current(A) | 420 | 410 | 400 | 390 | 375 | 360 |
| Max Effeciency | 86% | 97% | 88% | 89% | 90% | 90% |
| Rating Power(KW) | 7.5 | 7.8 | 10.8 | 11.2 | 12.2 | 15.1 |
| Rating Torque(N*M) | 10.5 | 13.8 | 17.8 | 18.8 | 20 | 22 |
| Net Weight (kg) | 2.53 | 2.51 | 2.56 | 2.52 | 2.52 | 2.52 |
| Construction | 24N/20P | |||||
| Dimension (mm) | D90*L96.4 | |||||
| Shaft Diameter (mm) | φ12*L40 | |||||
| Output Wire Length (mm) | 160±5MM | |||||
| Connector | 10.0mm Gold Connector | |||||
| Max Working Temperature | 120 Centigrade | |||||
| Service Life | 10000 hours | |||||
Note: Due to the materials increased 30%-50%, labor cost increased 30%, but the USD/RMB exchange rate down from 7.1 to 6.4 during the whole 2020 year, So the new cost from 2021 should be compeletely different, please kindly understand. All motor prices are subject to the final offer based on your order.
OEM/ODM Order question
We can custom made whatever brushless dc motor and servo you want. Before you give us inquirey, please supply below requirements to us, the more details you can offer, the better suggestion we can give.
For the motors please let us know your requirements:
1. Please choose inrunner motor or outrunner motor you need.
2. Do you have motor diameter and length limited?
3. What working voltage you will use for this motor?
4. What's your expected rated power?
5. What's your expected RPM?
6. You battery pack can bear how high peak current?
7. You estimated yearly sales qtys?
8. Do you need the speed controller together or if you have your own speed controller, please let us know the specifications.
9. Other requirements if you need, for example, wire length, connector types and so on.
Contact Us directly via Trade Manager or send us email both ok, we will reply ASAP in 24 hours.
Below our custom made motors for other clients for your information.
Product Pictures









To work with our brushless dc motor well, we suggest you buy our brushless speed controller as well. Also the LCD Program Card warm suggested.
Product Packing

Our Certificate

Our Factory

About US
Reacher Tech has devoted more than 10 years to the designing, developing and manufacturing the high-tech electronic brushless power systems for RC modelers and Industry Application.
We possess our own intellectual property and powerful R&D, which makes us design and produce products to satisfy customers’ needs (OEM customization service). All of our products can be meet CE and ROHS certification and some had passed Certificates. We’re looking forward to cooperating with global distributors of RC power systems (RC Brushless Motor, Industry brushless motor, Aero ESC, Car ESC, Marine ESC, RC Servos, Industry Servos, etc)
Reacher Tech consists of 3 departments as following at present:
--Brushless Motor and RC Servo Department. Including R&D and manufacture.
--Brushless ESC ( Electronic Speed Controller) Department.Including R&D and manufacture.
--Buyers Office (Searching relative products for clients, like RC Charger, Battery Pack, RC Plane, RC Car, UAV, Drone, Turbojet Plane, etc.
Whatever clients who want us to do the search and do the drop shipping, we are pleasure to do this service for you)
For the purpose of following the latest development of science & technology closely, we are dedicating to enhancing the product details and making continuous improvements in pursuit of the product perfection. Meanwhile, the products with high quality and stability together with professional services will be offered to the customers all the time.
Shipping Advice

Shipping Methods Optional
1.For normal products, we suggest to ship via EMS/UPS/DHL/FEDEX/TNT Express, we will
choose the economic one for you depends on the different discount.
2.For product like motor, servo with magnet inside, China inland express refused to ship magnet
product except to do the extra magnetic inspection. So we always ship via Hongkong DHL, to
save time and cost.
3.For the special product with battery or the pure battery products, as it’s very serious for battery
shipping. We choose the battery special shipping line, every day shipping charge is floating.
4.For big jet plane sample, as the length+(width+height)*2>3m, all the China inland EMS refused
to ship, the only shipping way is via Singapore Post.
5.For Bulk qtys order, we will choose shipping via Air or by sea depends on the final volume and
weight.
Our Service


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