120x38 Cooling Fan (Computer Fan), DC axial fan

The 120x38 cooling fan is 38 mm thick on a 120 mm square frame; it mounts by 4.3 mm mounting holes 105 mm apart. Here as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 120x38 fan
• Model id: fans-dc-axial-120x38
• Standard: DC axial fan · size 120x38

Files

Part key	Simplified
fans-dc-axial-120x38	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
a	Frame side		120		120	nominal	L1
t	Frame thickness		38		38	nominal	L1
e	Mounting hole spacing		105		105	nominal	L1
dh	Mounting hole diameter		4.3		4.3	nominal	L1

Drawing

As a PDF: CC-DCFAN-SZ-120x38.pdf.

From the maker's data sheet

As written on the Mechatronics data sheet for this frame (mechatronics-dc-axial), one of the sheets this size's dimensions come from: the series, its models and features.

• Series: MR1238
• Models: MR1238L
• Operating Voltage: 12, 24 or 48 VDC
• Bearing option: ball bearing
• Air Flow: air exhaust over struts
• Features: soft start, polarity protection, auto-restart
• Options: tachometer output or locked rotor alarm signal; PWM speed control

The 120x38 cooling fan beside the 120x25

The 120x38 is the last of the 18 DC axial fan cooling fans published here, listed from 25x10 to 120x38.

• Frame side (a): 120 mm on the 120x38 cooling fan, the same on the 120x25.
• Frame thickness (t): 38 mm on the 120x38 cooling fan, against 25 mm on the 120x25.
• Mounting hole spacing (e): 105 mm on the 120x38 cooling fan, the same on the 120x25.
• Mounting hole diameter (dh): 4.3 mm on the 120x38 cooling fan, the same on the 120x25.

Other sizes

• One size smaller: 120x25 Cooling Fan (Computer Fan), DC axial fan, 120 mm square, 25 mm thick.

Documents

• CC-DCFAN-DS-120x38.pdf: 120x38 datasheet: values with levels, sources
• CC-DCFAN-SZ-120x38.pdf: 120x38 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

delta-dc-axial, mechatronics-dc-axial, sunon-dc-fan-255e. Full citations: the method page and this size's datasheet.

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