Motor finder

Size the joint. Find the motor.

Drag the sliders — the diagram and the required torque update live, and the catalog re-ranks to what fits.

What are you building?

Payload at the end 2.0 kg

Arm length (pivot → load) 300 mm

Arm angle from horizontal 0°

Safety factor 1.5×

Gear reduction (QDD stage) 6 : 1

include a ~150 g arm

Joint torque needed— N·m

With 6:1 reduction, your motor needs

— N·m

τ_motor = SF·(m·g·L + arm)·cos θ ÷ ratio

More filters

Bus voltage

Max Ø (mm)

Max weight (g)

Worst case is a horizontal arm (0°). Tilt up to see the torque drop.

14 motors fit

All motors →

Hub Wheel Motor — 6.5" 24 V (direct-drive)

hub15 Kv 5.0 N·m cont 12.0 peak 24–36 V Ø1651500 g

$79.00

Details

Frameless Torque Motor — ~Ø80

frameless25 Kv 3.0 N·m cont 7.0 peak 24–48 V Ø80300 g

$209.00

Details

Pancake Outrunner — T-Motor U10 II (KV100)

outrunner100 Kv 2.5 N·m cont 5.0 peak 22–50 V Ø106408 g

$209.00

Details

Outrunner BLDC — 6374 (190 Kv)

outrunner190 Kv 1.8 N·m cont 4.0 peak 12–50 V Ø63800 g

$85.00

Details

Pancake Outrunner — U8-class

outrunner85 Kv 1.6 N·m cont 3.0 peak 12–44 V Ø96240 g

$229.00

Details

Gimbal BLDC Motor — 8108 90T (hollow shaft)

gimbal30 Kv 1.2 N·m cont 2.5 peak 12–48 V Ø88280 g

$69.00

Details

Direct-Drive Arm Motor — Steadywin GB7215

gimbal30 Kv 1.0 N·m cont 2.0 peak 12–48 V Ø72200 g

$109.00

Details

Outrunner BLDC — 6354 (270 Kv)

outrunner270 Kv 1.0 N·m cont 2.5 peak 12–42 V Ø63370 g

$65.00

Details

Outrunner BLDC — 5065 (270 Kv)

outrunner270 Kv 1.0 N·m cont 2.2 peak 12–50 V Ø50320 g

$59.00

Details

Gimbal BLDC Motor — GM5208-class

gimbal30 Kv 0.5 N·m cont 0.9 peak 12–24 V Ø58175 g

$79.00

Details

Gimbal BLDC Motor — GB4108 (compact)

gimbal40 Kv 0.25 N·m cont 0.45 peak 12–24 V Ø46110 g

$59.00

Details

Gimbal BLDC Motor — GBM5010 (flat)

gimbal90 Kv 0.15 N·m cont 0.3 peak 12–24 V Ø5378 g

$29.00

Details

Gimbal BLDC Motor — GBM2804 (micro)

gimbal25 Kv 0.05 N·m cont 0.1 peak 7–14 V Ø3532 g

$24.00

Details

Gimbal BLDC Motor — 2208 80T (compact)

gimbal80 Kv 0.04 N·m cont 0.08 peak 7–14 V Ø2855 g

$15.00

Details

Complete the actuator

auto-matched to your top result + gear ratio