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The NMB-MAT 1608KL-05W-B39 is a compact 24VDC brushless axial cooling fan manufactured by NMB Technologies, a MinebeaMitsumi Group company. Its 40 × 40 × 20mm frame and three-wire connection are used for internal airflow in compatible FANUC CNC servo, spindle and power supply modules.
This fan is commonly associated with FANUC reference A90L-0001-0510. Complete suffixes must still be checked: 1608KL-05W-B39-L00 uses a locked-rotor signal, while -L50 provides a tachometer signal. Connector style, lead length and nameplate current can vary.
1608KL-05W-B39 Product Information
| Brand | NMB Technologies / MinebeaMitsumi |
| Model / MPN | 1608KL-05W-B39 |
| Product Type | DC brushless axial cooling fan |
| FANUC Reference | A90L-0001-0510; confirm the original label and connector |
| Rated Voltage | 24VDC |
| Rated Current | Typically 0.06–0.08A depending on suffix and OEM nameplate |
| Frame Size | 40 × 40 × 20mm |
| Connection | Three wire; verify plug, pinout and lead length |
| Typical Speed / Airflow | 6500 RPM / 7.4 CFM |
| Noise / Static Pressure | 25.5dB(A) / 42.2Pa maximum |
| Bearing | Ball bearing |
| Signal Options | L00: locked-rotor sensor; L50: tachometer |
| Condition | New, refurbished, or used 90% new; subject to stock |
| Testing | 100% tested before shipping; test video available |
| Handling | Normally 1–2 business days |
| Shipping / ETA | DHL, UPS, or FedEx worldwide; typically 3–7 business days |
| Warranty | 1 year for new/refurbished; 3 months for used 90% new |
| Service / Packing | Free technical support; anti-static reinforced packing |
Cooling Performance and Service Life
Official NMB data for B39 L00/L50 versions specifies approximately 6500 RPM, 7.4 CFM airflow, 42.2Pa maximum static pressure and 25.5dB(A) noise. The ball-bearing design has an L10 life expectancy of 60,000 hours at 25°C under the stated test conditions.
FANUC Drive Compatibility Checks
FANUC documentation lists A90L-0001-0510 as an internal fan motor for selected Alpha i power supply, servo and spindle amplifier modules, including certain A06B-6110-C605 fan-unit applications. Confirm the drive model, fan label, airflow direction, connector, pin assignment and cable length.
Testing and Installation Notes
REACO CNC checks the label, frame, blades, bearing noise, startup, running current, airflow and signal lead as applicable. Disconnect power and allow the amplifier DC bus to discharge before installation. Never interchange the sensor and power wires solely by color.
Related resources: FANUC CNC drives and FANUC drive repair services.
Fast Global Delivery
- DHL, UPS, FedEx Global shipping.
- Expedited shipping available
- Packed in secure reinforced cartons for maximum protection during transport.
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