CUI DEVICES | SERIES: CFM-120B | DESCRIPTION: DC AXIAL FAN

date 08/12/2022 | page 6 of 9

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MECHANICAL

parameter

conditions/description

min

typ

max

units

motor

4 pole DC brushless

bearing system

dual ball bearing

direction of rotation

counter-clockwise viewed from front of fan blade

dimensions

CFM-A225B models: 120 x 120 x 25.4

CFM-A238B models: 120x 120 x 37.5

mm

mm

material

PBT (UL94V-0)

weight

CFM-A225B models

CFM-A238B models

83.9

300

g

g

MECHANICAL DRAWING

MOUNTING SCREW (Pan Head)

Screw Type

Size

Standard

Torque

Machine Screw

M4

JIS B1111-1974

4.5 kgf-cm

Self-tapping Screw

M5

JIS B1122 Type 2

5.5 kgf-cm

units: mm

2 wire versions (+Vin & -Vin): UL 1007, 24 AWG

3 wire versions (+Vin, -Vin, & tach): UL 1007, 24 AWG

4 wire versions (+Vin, -Vin, tach, & PWM): UL 1007, 28 AWG

CFM-A225B

WIRE CONNECTIONS

Wire Color

Function

Red

+Vin

Black

-Vin

Yellow10

Tach Signal

Blue10

PWM

Notes: 10. Wires only present on versions with output signals.

Additional Resources: Product Page | 3D Model