A90L-0001-0423#105 Minebea NMB-MAT Fan 2406KL-05W-B59 2406KL05WB59 24O6KL-O5W-B59 in stock DC24V 0.13A

A90L-0001-0423#105 | FANUC 60mm Cooling Fan — 24V / 0.12A / 18.4 CFM / 6800 RPM / 3-Wire Rotation Alarm / 105mm Cable

FANUC 60mm Fan with Stopped Rotation Alarm — Drive Module Cooling

The A90L-0001-0423#105 is a FANUC-designated 60mm cooling fan assembly for the FANUC Alpha series servo drive system — used in Power Supply Modules (PSM) and Spindle Amplifier Modules (SPM) of the FANUC Alpha servo platform. The "#105" suffix identifies the 105mm cable length version of the A90L-0001-0423 fan family.

Unlike a generic industrial fan, the A90L-0001-0423 is a FANUC catalog component with a specific part number tracked in FANUC maintenance manuals and spare parts lists — making it the traceable, documented replacement for original factory-installed fans in these FANUC drive modules.

Key Specifications

Stopped Rotation Alarm Signal — FANUC Amplifier Integration

The "stopped rotation alarm signal" output on the third wire is the feature that makes the A90L-0001-0423 different from a simple 2-wire replacement fan:

What the alarm signal does: The third wire outputs a logic signal that pulses at a frequency proportional to fan rotation. When the fan stalls or slows significantly, the pulse frequency drops. FANUC drive modules connected to this signal detect the change and generate a drive fault.

FANUC fault response: Depending on the specific FANUC Alpha module configuration, a fan fault may trigger a warning alarm that allows operation to continue at reduced capacity, or an immediate overtemperature shutdown — protecting the IGBT power modules and electrolytic capacitors in the servo drive from thermal damage.

Why 6800 RPM at only 60mm: The 60mm fan at 6800 RPM delivers 18.4 CFM — the small diameter fan runs substantially faster than larger fans to achieve useful airflow in the compact 60mm mounting position within the Alpha module housing

Applications

FANUC CNC machine tool maintenance: Direct replacement of fan in FANUC Alpha series PSM and SPM modules during scheduled maintenance or fan failure repair on machining centres, turning centres, and grinding machines.

FANUC servo drive system reliability maintenance: Proactive fan replacement at defined maintenance intervals — before bearing wear causes fan speed reduction and triggers drive overtemperature faults.

CNC machine retrofit cooling: 60mm 24V fans in compact drive enclosures serving legacy CNC machine tool drive system positions requiring the 60×60×15mm slim form factor.

FAQ

Q1: Why does the A90L-0001-0423 fan run at 6800 RPM when most 60mm fans run at 3000–5000 RPM?

The Alpha series servo module housing requires the 60mm fan to achieve specific airflow through a constrained heat sink path. Higher RPM increases static pressure capability — the fan's ability to push air against the resistance of the heat sink fin channels, narrow ducts, and tight module interior. The 6800 RPM delivers the pressure required to force sufficient airflow through the compact Alpha module's thermal pathway.

Q2: What is the difference between A90L-0001-0423#105 and A90L-0001-0423#50?

The fan body (60mm × 60mm × 15mm, 24V, 0.12A, 6800 RPM) is identical in both. The sole difference is cable length: #50 has approximately 50mm cable from the fan body to the connector; #105 has 105mm; #150 has 150mm. Select the suffix matching the cable route distance in the specific FANUC module.

Q3: Can A90L-0001-0423#105 be used interchangeably with NMB 2406KL-05W-B59?

The A90L-0001-0423 fan body is equivalent to the NMB 2406KL-05W-B59 (or Sanyo Denki 9WF0624H7D04) in terms of the 60mm fan specifications. However, the FANUC A90L-0001-0423 assembly includes the specific FANUC connector and cable assembly required for direct plug-in installation in the FANUC module. A bare 2406KL-05W-B59 fan would require field termination to the FANUC connector format. Using the A90L-0001-0423 assembly ensures correct connector compatibility.

Q4: What FANUC maintenance parameter tracks fan operating hours?

FANUC servo amplifier maintenance data menus display fan operating hours in specific diagnostic data parameters — accessible via the CNC's diagnostic screen. The fan operating hour counter allows maintenance engineers to plan proactive fan replacement before the FANUC-recommended maintenance interval is reached, preventing unplanned downtime from fan failure. Check the specific FANUC Alpha amplifier maintenance manual for the relevant parameter number.