DC motor A12B-27

3 Vcoreless

Overview
The A12B series is a family of φ12 mm coreless motors offering multiple sub-models with differing lengths (15.5–18.1 mm), applied voltages (approx. 3.0–12.0 V), terminal resistances and performance characteristics. Each sub-model is presented with a product gallery (images and video thumbnail) and a specification table. Customizable items are available for many sub-models.

Product Series - Key model table
Model Name | Outer Diameter [mm] | Length [mm] | Applied Voltage [V] | Terminal resistance [Ω] | No Load Rotation Speed [r/m] | No Load Current [mA] | Startup Current [mA] | Startup Torque [mN･m] | Max Efficiency [%] | Max Output [W]
A12B-24 | 12 | 15.5 | 4.5 | 4.1 | 23,800 | 45 | 1,100 | 1.83 | 63.6 | 1.14
A12B-37 | 12 | 18.1 | 9.0 | 65.2 | 8,860 | 5 | 138 | 1.24 | 65.6 | 0.29
A12B-36 | 12 | 18.1 | 12.0 | 122.4 | 10,240 | 4 | 98 | 1.01 | 63.7 | 0.27
A12B-35 | 12 | 18.1 | 3.0 | 24.0 | 5,100 | 8 | 125 | 0.62 | 55.8 | 0.08
A12B-33 | 12 | 18.1 | 3.0 | 40.0 | 3,600 | 5 | 75 | 0.52 | 55.0 | 0.05
A12B-32 | 12 | 18.1 | 4.5 | 2.4 | 19,250 | 35 | 1,870 | 4.02 | 74.5 | 2.03
A12B-27 | 12 | 18.1 | 3.0 | 10.3 | 7,750 | 12 | 291 | 0.99 | 63.5 | 0.20

Customizable Items (common tags)

• Gear head
• Lead pin
• Lead wire
• Grounding terminal

Available assets and data (on product pages)
Product pages include photographic galleries and video files for sub-models; many pages reference outline drawings and downloadable CAD data. No contact details or external links are included here.

Notes
The A12B series page contains individual product-detail blocks for each sub-model (A12B-24, -27, -32, -33, -35, -36, -37, etc.), each presenting a gallery and a specification table as consolidated above.

Technical characteristics / specifications

• Series name: A12B series
• Outer diameter: 12 mm (φ12)
• Length (typical range across sub-models): 15.5 mm – 18.1 mm
• Applied voltage (observed range): approx. 3.0 V – 12.0 V (varies by sub-model)
• Terminal resistance (observed range): approx. 2.4 Ω – 122.4 Ω
• No-load rotation speed (observed range): several thousand to ~23,800 r/m depending on model
• No-load current and startup current values vary by model (see product table)
• Startup torque (per sub-model): values in mN･m range (examples: 0.52–4.02 mN･m)
• Maximum efficiency (observed): ~55% – 75% depending on model
• Maximum output power (observed): up to ~2.03 W for the listed sub-models
• Customizable items: gear head, lead pin, lead wire, grounding terminal
• Product assets on pages: photographic galleries, video files, outline drawings and CAD data (downloadable from product pages where provided)