Brushless motor TB12M

DCBLDC12 V

Product overview
Thumbelina® is a brushless DC motor designed to deliver high torque and maintain high holding force even when unpowered, contributing to reduced power consumption. Its ultra-compact form factor enables installation in confined spaces such as robot hands. A range of optional gearheads is available for various applications. (Applications: robot hands, small precision units)

Product variations
Brushless DC motor TB12M
Size: φ12 x 27 mm
Mass: 18.5 g
Rated voltage: 12V / 24V
Holding (stall) torque: 18–25 mNm
Max output: 5–10 W

Brushless DC motor TB16M (under development)
Size: φ16 x 36 mm
Mass: 42 g
Rated voltage: 24V
Holding (stall) torque: 77 mNm
Max output: 11 W

Brushless DC motor TB16S (under development)
Size: φ16 x 23 mm
Mass: 26 g
Rated voltage: 24V
Holding (stall) torque: 42 mNm
Max output: 11 W

Series with options (gearheads)
Harmonic Drive® reducer (small)
Size: □13 x 46.3 mm
Gear ratios: A: 1/30 B: 1/50 C: 1/100
Supply voltage: 12V / 24V
Allowable torque: A: 0.06 Nm B: 0.11 Nm C: 0.15 Nm

Harmonic Drive® reducer (large)
Size: □20 x 50.6 mm
Gear ratios: D: 1/30 E: 1/50 F: 1/100
Supply voltage: 12V / 24V
Allowable torque: A: 0.25 Nm B: 0.4 Nm C: 0.6 Nm

Planetary gear reducer
Size: G: □13 x 54.7 mm H: □13 x 58.2 mm J/K: □13 x 61.7 mm L: □13 x 65.2 mm
Gear ratios: G: 1/4 H: 1/16 J: 1/48 K: 1/64 L: 1/256
Supply voltage: 12V / 24V
Allowable torque: G: 0.15 Nm H: 0.2 Nm J: 0.25 Nm K: 0.25 Nm L: 0.28 Nm

CROWNROBOX GEAR®
Size: □13 x 59 mm
Gear ratio: 1/50
Supply voltage: 24V
Allowable torque: 0.3 Nm

Key features / main specifications (summary)

• High-torque design with strong holding force even when unpowered
• Brushless DC motor contributing to reduced power consumption
• Ultra-compact design suitable for installation in confined spaces such as robot hands
• Main variants: TB12M, TB16M (under development), TB16S (under development)
• Operating voltage: 12V / 24V (depends on model)
• Representative holding (stall) torque range: 18 mNm–77 mNm (depends on model)
• Representative output range: 5 W–11 W (depends on model)
• Compatible with various gearhead options (Harmonic Drive®, planetary gear, CROWNROBOX GEAR®, etc.)
• Typical applications: robot hands, small precision units