DINGS' Slotless Brushless DC Motor, 28ZWWC52 can avoid the pulsation of air gap magnetic induction caused by uneven magnetic resistance in the teeth.
It can eliminate the pulse loss in the armature core and the surface loss on the main pole surface.
28ZWWC52 Slotless Brushless DC Motor has high durability, low electrical noise and high efficiency.
Maximum efficiency of motor reaches 85% and this motor is suitable for the servo system which needs quick movement and high power.
28ZWWC52 Rated Power is 37W and Peak Torque is 375mN.m.
In a mobile environment, you can move left and right to see the contents (tables).
| Motor part number | - | 28ZWWC52 | |||||
|---|---|---|---|---|---|---|---|
| Pole pair | - | 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 method | - | Star shape | Star shape | Star shape | Star shape | Star shape | |
| Insulation class | - | B | B | B | B | B | |
| Duty type | - | S2 | S2 | S2 | S2 | S1 | |
| Feedback method | - | Hall sensors | Hall sensors | Hall sensors | Hall sensors | Hall sensors | |
| Commutation angle | - | 120° | 120° | 120° | 120° | 120° | |
|
Insulation strength (Withstand voltage) |
- | 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 | |
| Case - Environmental thermal resistance (no load) | K/W | 0.67 | 0.69 | 0.73 | 0.64 | 0.7 | |
| Motor thermal time constant (no load) | S | 1200 | 1200 | 1080 | 1100 | 880 | |
| Ambient temperature | ℃ | 23 | 24 | 27 | 25 | 21.2 | |
| Max. 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-EMF constant - peak value | V/Krpm | 1.52 | 2.81 | 4.04 | 5.87 | 3.7 | |
| Back-EMF 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 | |
| Inertia moment | 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 bell | - | Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel | |
| Bearing | - | Deep Groove Ball Bearing | Deep Groove Ball Bearing | Deep Groove Ball Bearing | Deep Groove Ball Bearing | Deep Groove Ball Bearing | |
| Magnet | - | Sinter NdFedB | Sinter NdFedB | Sinter NdFedB | Sinter NdFedB | Sinter NdFedB | |
| Rotation shaft | - | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel | |
In a mobile environment, you can move left and right to see the contents (tables).
| Stage | - | Stage 1 | Stage 2 | Stage 3 | Stage 4 |
|---|---|---|---|---|---|
| Gear ratio | X : 1 | 3.9, 5.3, 6.6 | 16, 21, 26, 28, 35 | 62, 83, 103, 111, 138, 150, 172, 186, 231 |
243, 326, 406, 439, 546, 590, 679, 734, 794 |
| Max. backlash | ° | 0.5 | 0.6 | 0.7 | 0.75 |
| Max. continuous output power | W | 100 | 50 | 25 | 8.0 |
| Max. peak output power | W | 125 | 62 | 31 | 10 |
| Max. continuous input speed | rpm | 6000 | 7000 | 7000 | 7000 |
| Max. peak input speed | rpm | 7500 | 8750 | 8750 | 8750 |
| Max. continuous torque | N.m | 1.25 | 2.90 | 5.0 | 5.0 |
| Max. peak torque | N.m | 1.6 | 3.6 | 6.3 | 6.3 |
| Max. efficiency | % | 90 | 81 | 72 | 65 |
| Weight | g | 103 | 150 | 174 | 198 |
| Gearbox length L | mm | 24.2 | 36.9 | 43.5 | 50.2 |
