73:1 Metal Gearmotor 20Dx42L mm (Short Output Shaft) vs 50:1 Metal Gearmotor 37Dx70L mm 12V with 64 CPR Encoder (Helical Pinion)
73:1 Metal Gearmotor 20Dx42L mm (Short Output Shaft) and 50:1 Metal Gearmotor 37Dx70L mm 12V with 64 CPR Encoder (Helical Pinion) are compared below on the data published by their sellers — price converted to euros, stock, and every specification either seller discloses. On price, 73:1 Metal Gearmotor 20Dx42L mm (Short Output Shaft) is €25.13 cheaper ($31.95).
| Criterion |  73:1 Metal Gearmotor 20Dx42L mm (Short Output Shaft) |  50:1 Metal Gearmotor 37Dx70L mm 12V with 64 CPR Encoder (Helical Pinion) |
|---|---|---|
| Price | $31.95cheapest | $60.95 |
| Seller | Pololu | Pololu |
| Availability | In stock | In stock |
| Rating | — | — |
| Current max. | — | 0.66 A |
| Voltage | — | 12 V |
| Torque max. | — | 2.2 kg·cm |
| Weight | 43 g | 205 g |
| Encoder resolution | — | 64 CPR |
| Encoders | — | Yes |
| Gear ratio | 73:1 | 50:1 |
| Lead length | — | 20 cm |
| Max efficiency 12v | — | 51 % |
| Max output power 12v | — | 10 W |
| Motor type | — | 12 V |
| No load current 12v | — | 0.2 A |
| No load current 6v | 250 mA | 0.15 A |
| No load speed 12v | — | 200 rpm |
| No load speed 6v | 180 rpm | 100 rpm |
| Output power at max efficiency | — | 4 W |
| Shaft diameter | 4 mm | 6 mm |
| Size | 20D x 44L mm | 37D × 70L mm |
| Speed at max efficiency | — | 180 rpm |
| Stall current 12v | — | 5.5 A |
| Stall current 6v | 3 200 mA | 3 A |
| Stall torque 12v | — | 21 kg·cm |
| Stall torque 6v | 60 oz·in | 12 kg·cm |
| View at seller ↗ | View at seller ↗ |
Specifications are extracted automatically from seller data — an empty cell means the seller does not publish that value, not that the product lacks it.
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