28 Series Hollow Cup Brushless DC Motor
Product Introduction
- Rated power of 30W to 37W and motor efficiency from 80% to 85%.
- Rated torque of 32 mN·m to 50 mN·m with speeds up to 9680 RPM.
- Features stainless steel end cover, sintered NdFeB magnets, and deep gutter ball bearings.
- Warm Reminder:
- The following product parameters are standard products, our company can do product design, development and production according to the special needs of customers. For more information, please contact [email protected]
Product Parameters
| Motor Type | – | 28ZWWC52 | ||||
| Number of Poles | – | 1 | 1 | 1 | 1 | 2 |
| Phase Resistance | Ω | 0.52 | 1.7 | 4.3 | 6.6 | 1.6 |
| Phase Inductance | mH | 0.0495 | 0.178 | 0.42 | 0.77 | 0.13 |
| Winding Connection | – | Star | Star | Star | Star | Star |
| Insulation Class | – | B | B | B | B | B |
| Working System | – | S2 | S2 | S2 | S2 | S2 |
| Feedback Mode | – | Hall element | Hall element | Hall element | Hall element | Hall element |
| Commutation Angle | – | 120° | 120° | 120° | 120° | 120° |
| Insulation Strength | – | 500VAC/1KHz/1mA/1s | 500VAC/1KHz/1mA/1s | 500VAC/1KHz/1mA/1s | 500VAC/1KHz/1mA/1s | 500VAC/1KHz/1mA/1s |
| Insulation Resistance | – | 100 MΩ/500VDC | 100 MΩ/500VDC | 100 MΩ/500VDC | 100 MΩ/500VDC | 100 MΩ/500VDC |
| Weight | g | 170 | 170 | 170 | 170 | 170 |
| Rated Voltage | V | 12 | 24 | 36 | 48 | 24 |
| Rated Power | W | 30 | 34 | 35 | 35 | 37 |
| Rated Torque | mN·m | 32 | 32 | 32 | 34 | 50 |
| Rated Speed | RPM | 6970 | 8430 | 8370 | 8340 | 7000 |
| Rated current | A | 3.13 | 1.69 | 1.17 | 0.86 | 2 |
| No-load Speed | RPM | 9270 | 9680 | 9500 | 9400 | 8500 |
| No-load Current | A | 0.2 | 0.11 | 0.084 | 0.061 | 0.12 |
| Motor Efficiency | % | 80 | 84 | 83 | 85 | 81.5 |
| Noise
(Ambient noise 20dB, test distance 1m) |
dB | ＜50 | ＜50 | ＜50 | ＜50 | ＜50 |
| Housing – Ambient Thermal Resistance (no load) | K/W | 0.67 | 0.69 | 0.73 | 0.64 | 0.7 |
| Thermal Time Constant of Motor | S | 1200 | 1200 | 1080 | 1100 | 880 |
| Ambient Temperature | ℃ | 23 | 24 | 27 | 25 | 21.2 |
| Maximum Winding Temperature (no load) | ℃ | 43.2 | 47.3 | 52.5 | 47.4 | 46.7 |
| Torque Constant | mN·m/A | 10.24 | 18.97 | 27.32 | 39.63 | 25 |
| Back Electromotive Force Constant – Peak Value | V/Krpm | 1.52 | 2.81 | 4.04 | 5.87 | 3.7 |
| Back Electromotive Force Constant – Effective Value | V/Krpm | 1.07 | 1.99 | 2.86 | 4.15 | 2.62 |
| Peak Torque | mN·m | 236.31 | 267.87 | 228.72 | 288.25 | 375 |
| Peak Current | A | 23 | 14 | 8 | 7 | 15 |
| Moment of Inertia | g·cm² | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 |
| Mechanical Time Constant | ms | 5.06 | 4.82 | 5.88 | 4.29 | 2.61 |
| End Cover | – | Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel |
| Bearing | – | Deep gutter ball | Deep gutter ball | Deep gutter ball | Deep gutter ball | Deep gutter ball |
| Magnet | – | Sintered NdFeB | Sintered NdFeB | Sintered NdFeB | Sintered NdFeB | Sintered NdFeB |
| Pivot | – | Carbon steel | Carbon steel | Carbon steel | Carbon steel | Carbon steel |
Mechanical Dimensions: mm
