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 35W and Peak Torque is 288.25mN.m.
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| Motor Part Number | 28ZWWC52 | |||||
|---|---|---|---|---|---|---|
| General Informaiton | ||||||
| Dimension | Motor Length | mm | 52 | 52 | 52 | 52 |
| Mounting Hole | mm | φ28 | φ28 | φ28 | φ28 | |
| Motor Shaft | mm | 6.8 | 6.8 | 6.8 | 6.8 | |
| Pole Pairs | - | 1 | 1 | 1 | 1 | |
| Phase Resistance | Ω | 0.52 | 1.7 | 4.3 | 6.6 | |
| Phase Inductance | mH | 0.0495 | 0.178 | 0.42 | 0.77 | |
| Winding Connection | - | Star | Star | Star | Star | |
| Insulation Class | - | B | B | B | B | |
| Duty Type | - | S2 | S2 | S2 | S2 | |
| Feedback Method | - | Hall Sensors | Hall Sensors | Hall Sensors | Hall Sensors | |
| Commutation Angle | - | 120° | 120° | 120° | 120° | |
| Insulation Strength (Withstand Voltage) | - | 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 | |
| Weight | gr | 17 | 17 | 17 | 17 | |
| Performance Parameters | ||||||
| Rated Voltage | V | 12 | 24 | 36 | 48 | |
| Rated Power | W | 30 | 34 | 35 | 35 | |
| Rated Torque | mN·m | 32 | 32 | 32 | 34 | |
| Rated Speed | RPM | 6970 | 8430 | 8370 | 8340 | |
| Rated Current | A | 3.13 | 1.69 | 1.17 | 0.86 | |
| No Load Speed | RPM | 9270 | 9680 | 9500 | 9400 | |
| No Load Current | A | 0.2 | 0.11 | 0.084 | 0.061 | |
| Motor Efficiency | % | 80 | 84 | 83 | 85 | |
| Noise (Ambient noise 20db, test distance 1M) | dB | ＜50 | ＜50 | ＜50 | ＜50 | |
| Thermal Parameters | ||||||
| Enclosure - Ambient Thermal Resistance (No Load) | K/W | 0.67 | 0.69 | 0.73 | 1.19 | |
| Motor Thermal Time Constant (No Load) | S | 1200 | 1200 | 1080 | 1100 | |
| Ambient Temperature | ℃ | 23 | 24 | 27 | 25 | |
| Maximum Winding Temperature (No Load) | ℃ | 43.2 | 47.3 | 52.5 | 47.4 | |
| Motor Constant Coefficient | ||||||
| Torque Constant | mN·m/A | 10.24 | 18.97 | 27.32 | 39.63 | |
| Back-EMF Constant | Peak Value | V/Krpm | 1.52 | 2.81 | 4.04 | 5.87 |
| Effective Value | V/Krpm | 1.07 | 1.99 | 2.86 | 4.15 | |
| Calculated Value | ||||||
| Peak Torque | mN·m | 236.31 | 267.87 | 228.72 | 288.25 | |
| Peak Current | A | 23 | 14 | 8 | 7 | |
| Inertia Moment | g·cm² | 10.2 | 10.2 | 10.2 | 10.2 | |
| Mechanical Time Constant | ms | 5.06 | 4.82 | 5.88 | 4.29 | |
| Material | ||||||
| End Cover | 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 | ||
| Magnet | Sintered NdFeB | Sintered NdFeB | Sintered NdFeB | Sintered NdFeB | ||
| Shaft | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel | ||
