Brushless motor C17B-13

DCBLDC7.4 V

Overview
The C17B series of C.I. TAKIRON brushless motors (outer diameter φ17.4 mm) — a product family of small brushless DC motors for applications such as micro blowers and small fans. The series includes multiple sub-models (e.g. C17B-23, C17B-22, C17B-07, etc.) with varying lengths, rated voltages and performance (no-load speed, currents, startup current, startup torque, efficiency and output).

Available models and electrical/mechanical specifications (per model)
C17B-23
Outer Diameter [mm]: 17.4
Length [mm]: 13.0
Applied Voltage [V]: 4.8
Terminal resistance [Ω]: 6.0
No Load — Rotation Speed [r/m]: 11,700 — Current [mA]: 86
Startup — Current [mA]: 804 — Torque [mN·m]: 2.51
Efficiency [%]: 45.3
Output [W]: 0.8

C17B-22
Outer Diameter [mm]: 17.4
Length [mm]: 13.0
Applied Voltage [V]: 4.8
Terminal resistance [Ω]: 1.0
No Load — Rotation Speed [r/m]: 25,000 — Current [mA]: 217
Startup — Current [mA]: 4,848 — Torque [mN·m]: 8.11
Efficiency [%]: 62.2
Output [W]: 5.3

C17B-07
Outer Diameter [mm]: 17.4
Length [mm]: 13.0
Applied Voltage [V]: 4.8
Terminal resistance [Ω]: 1.8
No Load — Rotation Speed [r/m]: 17,000 — Current [mA]: 145
Startup — Current [mA]: 2,667 — Torque [mN·m]: 6.43
Efficiency [%]: 58.8
Output [W]: 2.86

C17B-25
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 6.8
Terminal resistance [Ω]: 7.9
No Load — Rotation Speed [r/m]: 11,100 — Current [mA]: 75
Startup — Current [mA]: 866 — Torque [mN·m]: 4.23
Efficiency [%]: 49.8
Output [W]: 1.23

C17B-24
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 6.8
Terminal resistance [Ω]: 2.0
No Load — Rotation Speed [r/m]: 17,100 — Current [mA]: 113
Startup — Current [mA]: 3,400 — Torque [mN·m]: 12.1
Efficiency [%]: 66.9
Output [W]: 5.40

C17B-16
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 7.4
Terminal resistance [Ω]: 2.3
No Load — Rotation Speed [r/m]: 27,200 — Current [mA]: 146
Startup — Current [mA]: 3,217 — Torque [mN·m]: 7.62
Efficiency [%]: 61.9
Output [W]: 5.43

C17B-13
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 7.4
Terminal resistance [Ω]: 1.8
No Load — Rotation Speed [r/m]: 24,250 — Current [mA]: 150
Startup — Current [mA]: 4,111 — Torque [mN·m]: 11.12
Efficiency [%]: 65.4
Output [W]: 7.06

C17B-18
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 6.8
Terminal resistance [Ω]: 1.2
No Load — Rotation Speed [r/m]: 27,200 — Current [mA]: 200
Startup — Current [mA]: 5,667 — Torque [mN·m]: 12.59
Efficiency [%]: 66.0
Output [W]: 8.97

C17B-06
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 6.0
Terminal resistance [Ω]: 2.1
No Load — Rotation Speed [r/m]: 19,250 — Current [mA]: 110
Startup — Current [mA]: 2,857 — Torque [mN·m]: 7.86
Efficiency [%]: 64.6
Output [W]: 3.96

C17B-09
Outer Diameter [mm]: 17.4
Length [mm]: 15.6
Applied Voltage [V]: 6.0
Terminal resistance [Ω]: 2.8
No Load — Rotation Speed [r/m]: 18,250 — Current [mA]: 108
Startup — Current [mA]: 2,143 — Torque [mN·m]: 6.07
Efficiency [%]: 60.1
Output [W]: 2.90

C17B-29
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 12.0
Terminal resistance [Ω]: 8.8
No Load — Rotation Speed [r/m]: 12,800 — Current [mA]: 72
Startup — Current [mA]: 1,364 — Torque [mN·m]: 10.95
Efficiency [%]: 59.3
Output [W]: 3.67

C17B-28
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 12.0
Terminal resistance [Ω]: 1.55
No Load — Rotation Speed [r/m]: 31,000 — Current [mA]: 168
Startup — Current [mA]: 7,742 — Torque [mN·m]: 27.39
Efficiency [%]: 72.7
Output [W]: 22.2

C17B-27
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 7.4
Terminal resistance [Ω]: 7.82
No Load — Rotation Speed [r/m]: 12,300 — Current [mA]: 70
Startup — Current [mA]: 946 — Torque [mN·m]: 4.66
Efficiency [%]: 53.0
Output [W]: 1.50

C17B-26
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 7.4
Terminal resistance [Ω]: 1.26
No Load — Rotation Speed [r/m]: 31,800 — Current [mA]: 192
Startup — Current [mA]: 5,873 — Torque [mN·m]: 12.21
Efficiency [%]: 67.1
Output [W]: 10.2

C17B-20
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 12.0
Terminal resistance [Ω]: 1.0
No Load — Rotation Speed [r/m]: 36,000 — Current [mA]: 173
Startup — Current [mA]: 12,371 — Torque [mN·m]: 38.29
Efficiency [%]: 77.7
Output [W]: 36.10

C17B-19
Outer Diameter [mm]: 17.4
Length [mm]: 17.9
Applied Voltage [V]: 24.0
Terminal resistance [Ω]: 2.4
No Load — Rotation Speed [r/m]: 45,450 — Current [mA]: 150
Startup — Current [mA]: 9,959 — Torque [mN·m]: 48.72
Efficiency [%]: 77.0
Output [W]: 57.99

Gallery notes
Each model has gallery images (examples: main product photos and thumbnails are provided for each model on the product listing).

Customizable / optional items (per-model notes)

• Many C17B models list customizable items such as: Gear head, Lead pin, Grounding terminal, Ball bearing (for some models), Lead wire (on some larger models).
• Not all models offer the same custom options; customizable tags are shown on each model sheet.

Typical uses
Small fans, micro blowers, portable devices requiring compact brushless motors (examples noted for certain sub-models include applications such as fans integrated in wearables or small mask fans).

Caractéristiques / spécifications techniques

• Series outer diameter: φ17.4 mm (nominal for C17B series).
• Available lengths: examples include 13.0 mm, 15.6 mm, 17.9 mm depending on sub-model.
• Applied voltage range among models: examples include 3 V–24 V designs (specific models rated at 4.8 V, 6.0 V, 6.8 V, 7.4 V, 12 V, 24 V depending on sub-model).
• Terminal resistance: varies per model (examples: 0.8–9 Ω range shown across models).
• No-load speed, no-load current, startup current, startup torque, efficiency and output power: provided per sub-model (see each model block above for exact values).
• Customizable options: gearhead, lead pin, grounding terminal, lead wire, ball bearing on selected models.
• Datasheets/CAD and external-dimension drawings are provided per model on the product pages (downloads referenced on the site). No contact or supplier communication details included here.