CUI DEVICES | SERIES: CFM-50S | DESCRIPTION: DC AXIAL FAN

date 08/12/2022 | page 4 of 6

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MECHANICAL

parameter

conditions/description

min

typ

max

units

motor

4 pole DC brushless

bearing system

sleeve bearing system

direction of rotation

counter-clockwise viewed from front of fan blade

dimensions

50 x 50 x 20

mm

material

PBT (UL94V-0)

weight

CFM-5020S-130-235

CFM-5020S-145-323

CFM-5020S-160-385

32.0

27.7

28.8

g

g

g

MECHANICAL DRAWING

WIRE CONNECTIONS

Wire Color

Function

Red

+Vin

Black

-Vin

Yellow10

Tach Signal

Blue10

PWM

units: mm

2 wire versions (+Vin & -Vin): UL 1007, 26 AWG

3 wire versions (+Vin, -Vin, & tach): UL 1007, 26 AWG

4 wire versions (+Vin, -Vin, tach, & PWM): UL 1061, 26 AWG

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

MOUNTING SCREW (Pan Head)

Screw Type

Size

Standard

Torque

Machine Screw

M4

JIS B1111-1974

7.5 kgf-cm

Self-tapping Screw

M5

JIS B1122 Type 2

7.5 kgf-cm

Additional Resources: Product Page | 3D Model