Everflow F128038BU 8038 — 80×80×38mm 12V 0.50A 3-Wire DC Cooling Fan

Everflow · DC Axial Fan · 80×80×38mm (8cm) · 12V / 0.50A · 3-Wire Tachometer · In stock

The Everflow F128038BU 8038 is a high-performance 12V DC axial cooling fan in the 80×80×38mm (commonly called 8cm / 8038) frame, drawing 0.50A (approximately 6W) and providing a tachometer (RPM) signal on the third wire for closed-loop thermal monitoring. Everflow Precision (Taiwan / 永悟) is a Tier-1 Taiwanese cooling-fan OEM with decades of OEM supply into industrial PCs, telecom equipment and factory automation, and the 8038 family is one of the workhorse frames used across control cabinets, inverters and rack-mounted controllers. KOEED stocks the F128038BU alongside other Everflow sizes for drop-in service replacement, with worldwide shipping and a 24-hour quote turnaround.

Key Technical Specifications / Overview

The F128038BU follows the standard Everflow P/N decode: F = fan, 12 = 12V DC, 80 = 80mm frame, 38 = 38mm thickness, B = ball-bearing variant, U = signal/control variant. The full ledger below summarises the rated electrical, mechanical and signal characteristics typically published in the Everflow datasheet for this frame.

Application Scenarios / Where It Fits

The 8038 frame is one of the most common axial fan sizes in industrial control, so the F128038BU shows up wherever a panel, rack or chassis has a standardised 80mm cut-out and a 12V rail. Typical deployments include:

• Control cabinet top / door cooling for Allen-Bradley ControlLogix racks and CompactLogix cells
• SIMATIC S7-300 / S7-1500 panel ventilation in Siemens enclosures
• MELSEC-Q / iQ-R base-unit exhaust in Mitsubishi panels
• SYSMAC CP1 / CJ2 cabinet airflow in Omron machines
• Fanuc 0i / 30i / 31i CNC spindle and power-supply cooling on Fanuc retrofit and service work
• Modicon M340 / M580 cabinet heat extraction in Schneider switchgear
• Σ-7 / Σ-V servo amplifier rack cooling in Yaskawa cabinets
• FP-series PLC enclosure fans in Panasonic factory cells
• CV / XG vision system enclosures and KEYENCE light-source cooling
• Industrial PCs, 1U / 2U server fans and telecom base-station subracks
• Welding-machine IGBT heatsink extraction and high-power inverter cooling
• Medical imaging and laboratory equipment where a long-life ball-bearing fan is preferred

See the wider DC cooling fans and cabinet-ventilation parts index for alternative sizes (40mm, 60mm, 92mm, 120mm, 172mm) and 24V / 48V variants if the F128038BU does not match your cut-out. Browse the factory-automation parts collection for the wider cabinet-buildout context.

Integration & Wiring Notes

The F128038BU uses the universal 3-wire DC fan convention that most industrial controllers already support, so wiring is usually a 1:1 swap with the failed unit:

• Red — V+ (12V DC): connect to the cabinet 12V rail or a fan header on the PLC / IPC backplane. Verify polarity before powering up; reversed polarity will not rotate the fan and may damage the driver IC.
• Black — GND (0V): tie to chassis / PSU return. Star-ground the fan return with the digital ground when feeding the tach into a PLC fast input.
• Yellow / White — Tachometer (FG, open-collector): 2 pulses per revolution, pulled up to +3.3V or +5V through 10 kΩ on the host side. Wire this into a high-speed counter on the PLC (e.g. Allen-Bradley 1756-L73 HSC, Siemens 6ES7 315-2EH14 quick-input, Mitsubishi Q02HCPU high-speed counter, or Omron CP1E-N40DR-A interrupt input) to detect a stalled fan.
• Inrush: 0.50A continuous can pull 0.8–1.0A at cold start; size the PSU and fuse for the inrush, not the steady-state rating.
• PWM speed control: the U suffix indicates the signal / control variant, but the standard 8038 is fixed-speed; for variable-speed control, step up to the 4-wire PWM family (e.g. F128038BU-PWM) or an equivalent Sunon / Delta frame.
• EMI: the tach line is open-collector and can be noisy in long cable runs; keep the cable under 2 m, or shield + ground the shield at the PLC end only.

When the F128038BU is replacing an OEM-branded fan (Nidec, Delta, Sanyo, Sunon, NMB) the mounting hole pattern is 71.5±0.5 mm on the diagonal — a direct swap. Confirm airflow direction (label arrow on the side of the housing) before mounting; reversing the fan in a sealed cabinet reverses the airflow and worsens the hotspot. Browse the full Everflow 80mm / 8038 / 92mm / 120mm fan family for pin-compatible alternates and panel-cutout variants.

Installation & Commissioning Tips

1. Verify the old fan's datasheet first. Match voltage (12V), current (≈ 0.5A), wire count (3) and frame (80×80×38mm). A 12V fan on a 24V rail will smoke in seconds; a 24V fan on 12V will not start.
2. Inspect the fan guard / filter. A clogged inlet filter is the most common root cause of “the fan has failed” — clean the filter, then re-evaluate. Everflow 8038 fans are commonly paired with a removable dust filter; replace the filter media at the same time.
3. Torque the four corner screws evenly (typically M3 × 4, 0.4–0.5 N·m) to avoid warping the housing. Overtightening distorts the bearing bore and shortens L10 life.
4. Mind the cable bend radius. 3-pin housings have a minimum 25 mm bend radius; tighter bends fatigue the lead wire at the grommet and cause intermittent open-circuit faults months later.
5. Confirm tach feedback at first power-up. Read the RPM on the PLC high-speed-counter diagnostic page; a healthy Everflow 8038 should report 3,000–4,000 RPM depending on the variant. Stalled or 0-RPM reports almost always mean a wiring issue, not a defective fan.
6. Add a thermal interlock in the PLC program. Wire the tach to a fail-safe input so a stalled fan trips the system alarm within seconds. Pair with a cabinet temperature sensor for redundancy.
7. Label the swap date on the fan label. Spare-parts traceability matters for ISO 9001 audits and most OEM warranty workflows.

Looking for a quick reference on cooling-airflow conversion or PLC error-code mapping for fan-fail alarms? Open the free PLC Error Code Database and the KOEED AI Diagnostic Tool — both run in-browser and accept nameplate photos of the failed fan for cross-reference against the F128038BU datasheet.

Procurement, Warranty & Lead Time

KOEED sources the Everflow F128038BU 8038 from authorised channels and inspected lots only — every fan is visually inspected, bench-run for tach and current draw, and serial-logged before it leaves the Shenzhen / Hong Kong warehouse. We do not relabel competing brands as “Everflow” and we do not ship from open mystery reels. For volume buyers, we can stage a custom BOM including F128038BU fans, Everflow filter kits, fan guards and matching PLC / HMI / servo spare parts in a single consolidated shipment.

• Stock: typically in stock in single-piece and 10-piece pack quantities; high-volume OEM lots on request.
• Lead time: in-stock units ship within 1–2 business days via DHL / FedEx / UPS. Backorder lead time is normally 2–4 weeks depending on the Everflow production schedule.
• Warranty: 12-month limited warranty against manufacturing defect. Ball-bearing L10 life is rated by the manufacturer; field life depends on duty cycle, dust load and ambient temperature.
• Authenticity: genuine Everflow branding, label and carton. COC / COO available on request for tier-1 OEM and audit-trail buyers.
• Worldwide shipping: DHL / FedEx / UPS door-to-door, with export documentation (commercial invoice, packing list, COO) prepared for North America, EU, Middle East, SEA and LATAM.
• RFQ / BOM quotation: send the full instrument list — e.g. “20 × F128038BU + 5 × F1203812B + 10 × filter kit” — to Moritta@KOEED.COM and we will get back with availability, tiered pricing and shipping options within 24 hours on business days.

For larger or recurring orders, create a quote online with multi-line BOM, or review recent real-time shipping records and the KOEED China sourcing and QC workflow before placing a recurring order. We routinely consolidate cooling fans, PLC modules, HMI panels and servo parts into one shipment for system integrators and end-users.