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38–43 mm Frameless Motors
Flexible choices across performance, reliability, and cost.
Model Comparison
Compare 38–43 mm frameless motor models and key specifications.
| Series | Model | Stator ODmm | Rotor IDmm | Stator Lengthmm | Rated TorqueNm | Peak TorqueNm | Rated Speedrpm | Rated VoltageVDC | Rated CurrentArms | Peak CurrentArms | KtNm/Arms | KmNm/√W | Weightg | View Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pro | 3806-A2 | 38 | 20 | 11.8 | 0.09 | 0.27 | 12,000 | 24 | 7 | 21 | 0.0145 | 0.0395 | 35 | View Details |
| Pro | 3806-B2 | 38 | 20 | 11.8 | 0.094 | 0.27 | 5,000 | 24 | 3.4 | 9.8 | 0.0307 | 0.0434 | 35 | View Details |
| Pro | 3812-A2 | 38 | 20 | 18.3 | 0.186 | 0.58 | 10,200 | 48 | 6.2 | 19.2 | 0.035 | 0.0711 | 65 | View Details |
| Pro | 3812-B2 | 38 | 20 | 18 | 0.189 | 0.502 | 6,000 | 48 | 3.4 | 9.8 | 0.062 | 0.0726 | 60 | View Details |
| Ultra | 3806-AT | 38 | 20 | 11.2 | 0.12 | 0.36 | 12,000 | 24 | 7.7 | 25 | 0.018 | 0.0521 | 60 | View Details |
| Ultra | 3806-BT | 38 | 20 | 11.2 | 0.12 | 0.36 | 8,000 | 24 | 5.4 | 18 | 0.0253 | 0.0532 | 60 | View Details |
| Ultra | 3806-CT | 38 | 20 | 11.2 | 0.13 | 0.363 | 5,000 | 24 | 4 | 12.5 | 0.0362 | 0.0552 | 60 | View Details |
| Ultra | 3812-AL | 38 | 20 | 17.2 | 0.24 | 0.72 | 8,000 | 48 | 5 | 16.5 | 0.0543 | 0.0911 | 90 | View Details |
| Ultra | 3812-BL | 38 | 20 | 17.2 | 0.24 | 0.72 | 5,000 | 48 | 3.66 | 12 | 0.0743 | 0.0922 | 90 | View Details |
| Ultra | 3812-CL | 38 | 20 | 17.2 | 0.25 | 0.72 | 3,000 | 48 | 2.65 | 8.25 | 0.1087 | 0.0936 | 90 | View Details |
| Precision | 3808 | 38 | 18 | 12.5 | 0.1 | 0.4 | 9,000 | 24 | 3.54 | 14.85 | 0.028 | 0.036 | 55 | View Details |
| Precision | 3814 | 38 | 18 | 19 | 0.23 | 0.76 | 8,500 | 48 | 4.31 | 14.85 | 0.052 | 0.06 | 82 | View Details |
| Pro | 4304-AT | 43 | 25.5 | 10.8 | 0.08 | 0.238 | 2,000 | 24 | 2.8 | 8.6 | 0.0315 | 0.0394 | 28 | View Details |
| Pro | 4308-AS | 43 | 25.5 | 14.8 | 0.152 | 0.456 | 7,600 | 36 | 4 | 12 | 0.0436 | 0.0677 | 57 | View Details |
| Pro | 4320-AL | 43 | 25.5 | 26.8 | 0.42 | 1.31 | 3,400 | 48 | 3.8 | 12 | 0.124 | 0.1446 | 120 | View Details |
| Ultra | 4310-AL | 43 | 25.5 | 16.5 | 0.25 | 0.77 | 8,000 | 48 | 5.1 | 16.2 | 0.0554 | 0.095 | 80 | View Details |
| Ultra | 4310-BL | 43 | 25.5 | 16.5 | 0.25 | 0.77 | 5,000 | 48 | 3.5 | 11 | 0.0814 | 0.0976 | 80 | View Details |
| Ultra | 4310-CL | 43 | 25.5 | 16.5 | 0.25 | 0.76 | 3,000 | 48 | 2.3 | 7.2 | 0.1221 | 0.0968 | 80 | View Details |
| Ultra | 4320-AL | 43 | 25.5 | 26.5 | 0.5 | 1.54 | 5,500 | 48 | 6.8 | 22 | 0.0814 | 0.1538 | 135 | View Details |
| Ultra | 4320-BL | 43 | 25.5 | 26.5 | 0.5 | 1.55 | 3,600 | 48 | 5 | 16.2 | 0.111 | 0.1554 | 135 | View Details |
| Ultra | 4320-CL | 43 | 25.5 | 26.5 | 0.51 | 1.54 | 2,200 | 48 | 3.5 | 11 | 0.1628 | 0.1585 | 135 | View Details |
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