120x25 Cooling Fan (Computer Fan), DC axial fan

A 120 mm square cooling fan, 25 mm thick, with 4.3 mm mounting holes 105 mm apart. It comes as simplified STEP files.

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

• Also searched as: 120x25 fan
• Model id: fans-dc-axial-120x25
• Standard: DC axial fan · size 120x25

Files

Part key	Simplified
fans-dc-axial-120x25	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
a	Frame side		120		120	nominal	L1
t	Frame thickness		25		25	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-120x25.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: MR1225
• Models: MR1225L
• Operating Voltage: 12 or 24 VDC
• Bearing option: ball bearing or sleeve
• 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 120x25 cooling fan beside the 92x38 and the 120x38

The 120x25 is number 17 of the 18 DC axial fan cooling fans published here, listed from 25x10 to 120x38.

• Frame side (a): 120 mm on the 120x25 cooling fan, against 92 mm on the 92x38 and 120 mm on the 120x38.
• Frame thickness (t): 25 mm on the 120x25 cooling fan, against 38 mm on the 92x38 and 38 mm on the 120x38.
• Mounting hole spacing (e): 105 mm on the 120x25 cooling fan, against 82.5 mm on the 92x38 and 105 mm on the 120x38.
• Mounting hole diameter (dh): 4.3 mm on the 120x25 cooling fan, against 4.5 mm on the 92x38 and 4.3 mm on the 120x38.

Other sizes

• One size smaller: 92x38 Cooling Fan (Computer Fan), DC axial fan, 92 mm square, 38 mm thick.
• One size larger: 120x38 Cooling Fan (Computer Fan), DC axial fan, 120 mm square, 38 mm thick.

Documents

• CC-DCFAN-DS-120x25.pdf: 120x25 datasheet: values with levels, sources
• CC-DCFAN-SZ-120x25.pdf: 120x25 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.

Found an error? Use the feedback section on this page.