PololuPololu· Motors & actuators
391:1 Metal Gearmotor 20Dx46L mm 6V CB with Extended Motor Shaft
Manufacturer part no. 3722
$32.95≈ 29.35 €
Manufacturer part no. 3722
Listed by Pololu at €29.35. Delivered to France, including shipping, VAT and any customs duty, it comes to about €65.22. Prices last checked on 2026-10-04.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
| Item | €29.35 |
|---|---|
| Shipping | €25.00 |
| VAT (20%) | €10.87 |
| Total delivered | €65.22 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
| Qty | Unit price | Saving |
|---|---|---|
| ≥ 1 | $32.95 | |
| ≥ 5 | $30.31 | −8 % |
| ≥ 25 | $27.89 | −15 % |
| ≥ 100 | $25.66 | −22 % |
| Current max. | 0.6 A |
| Voltage | 6 V |
| Torque max. | 2.7 kg·cm |
| Weight | 47 g |
| Max efficiency 6v | 23 % |
| Max output power 6v | 1.4 W |
| No load current 6v | 0.15 A |
| No load speed 6v | 36 rpm |
| Output power at max efficiency | 0.84 W |
| Shaft diameter | 4 mm |
| Speed at max efficiency | 30 rpm |
| Stall current 6v | 2.9 A |
| Stall torque 6v | 16 kg·cm |
| Extended motor shaft |
These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 6V brushed DC motor with long-life carbon brushes combined with a 390.6:1 metal spur gearbox. The gearmotor is cylindrical with a diameter of 20 mm, and the D-shaped output shaft is 4 mm in diameter and extends 18 mm from the face plate of the gearbox. This version also has a 6 × 2 mm extended motor shaft. Key specifications: Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.
| Yes |
| Gear ratio | 390.625:1 |
| Long life carbon brushes | Yes |
| Motor type | 2.9A stall @ 6V CB (carbon brush) |
| Size | 20D × 47.7L mm |
