Frequently Asked Questions
What is NMB-MAT 1608VL-S5W-B69?
NMB-MAT 1608VL-S5W-B69 is a compact DC axial cooling fan documented in industrial equipment spare-parts catalogs. Multiple exact-model listings specify 24 VDC, 0.09 A, a 40 × 40 × 20 mm frame and three electrical leads. It is commercially associated with selected FANUC amplifier cooling assemblies.
What is the rated voltage of 1608VL-S5W-B69?
The documented nominal supply is 24 VDC. This value appears consistently in the exact-model records of multiple independent suppliers. A manufacturer operating-voltage range for the S5W-specific assembly was not confirmed, so it should not automatically inherit voltage limits published for a different 1608VL configuration.
What are the dimensions of 1608VL-S5W-B69?
The fan measures 40 mm wide, 40 mm high and 20 mm deep according to multiple model-specific sources. It is commonly described as a 4020 axial fan. When ordering a replacement, also verify the mounting-hole locations, cable exit, connector housing and available equipment clearance.
What is the rated current and calculated input power?
The commonly documented current marking is 0.09 A at 24 VDC. Multiplying these values gives approximately 2.16 W electrical input. This is a calculated reference rather than a separately verified manufacturer running-power measurement. The different 1608VL-05W-B69-B50 is rated at 0.10 A by NMB and should not be used to overwrite the S5W label data.
What is the fan speed of 1608VL-S5W-B69?
Some independent sellers report approximately 9500 RPM for this model. NMB also specifies 9500 RPM for the related but different 1608VL-05W-B69 series. However, no publicly available exact-S5W manufacturer datasheet was located to confirm that value for every S5W assembly. Confirm actual specifications when fan speed is important.
What are the airflow and static pressure ratings?
Commercial listings vary in their airflow descriptions, with some reporting 11.3 CFM and another reporting 20 CFM. The 11.3 CFM figure is also published by NMB for a different 1608VL-05W-B69 configuration. A manufacturer-confirmed maximum airflow and static-pressure curve for 1608VL-S5W-B69 was not established. Do not use inconsistent seller figures as guaranteed thermal-design specifications.
Does 1608VL-S5W-B69 use three wires?
Yes. Multiple exact-model industrial suppliers identify three-wire connections on individual fans. Certain replacement assemblies use a three-pin male plug. Cable color assignments, lead length, connector keying and electrical pinout should be checked against the actual FANUC or other equipment harness.
Does the third wire provide a tachometer or locked-rotor signal?
Commercial suppliers sometimes describe the third lead as a sensor or frequency-signal connection. However, its complete electrical characteristics have not been independently established from an NMB S5W-specific wiring diagram. A third conductor does not automatically prove that the fan has a tachometer, locked-rotor output or dedicated PWM input. Verify the control circuit before installation.
What is the difference between FANUC A90L-0001-0575#A and #B?
Industrial replacement suppliers describe A90L-0001-0575#A as a single 40 × 40 × 20 mm, 24 VDC fan assembly with a three-pin connector. A90L-0001-0575#B is described as a twin-fan assembly with two fans connected through a six-pin housing. The six-pin connector belongs to the combined assembly, not to an individual six-wire fan. Check the complete FANUC equipment reference before ordering.
Can a SANYO DENKI 9WF0424H6503 replace NMB 1608VL-S5W-B69?
Selected FANUC spare-parts suppliers cross-reference the NMB fan and the SANYO DENKI San Ace 40WF 9WF0424H6503 in A90L-0001-0575 cooling assemblies. This is useful replacement information but does not establish universal interchangeability in every application. Compare nominal voltage, current, frame size, cooling performance, connector, wiring signals and equipment revision before substitution.
What is the difference between 1608VL-S5W-B69 and 1608VL-05W-B69?
These are distinct model designations. Exact-model suppliers commonly specify 0.09 A for 1608VL-S5W-B69, while the manufacturer lists 0.10 A, 9500 RPM, 11.3 CFM and 99.3 Pa for 1608VL-05W-B69-B00 and -B50. The manufacturer's -B00 provides a locked-rotor output and -B50 provides a tachometer output. Those output definitions and replacement references must not automatically be applied to the S5W version without confirmation.
Is 1608VL-S5W-B69 discontinued, and what should be checked before ordering?
An industrial parts distributor describes the exact 1608VL-S5W-B69 as discontinued, but an exact-model manufacturer lifecycle statement and direct successor number were not independently established. Before ordering, verify the complete model and any BE2 marking, 24 VDC supply, 0.09 A current, 40 × 40 × 20 mm frame, three-wire configuration, connector pin assignment, lead length, fan mounting, rotation and airflow direction. For FANUC equipment, identify whether the required assembly is A90L-0001-0575#A or #B. Do not assume that the newer models listed for 1608VL-05W-B69 are verified direct replacements for the S5W configuration.