Description
ebm-papst 8315100143 is a high-performance 120 × 120 × 38.0 mm (4.72 × 4.72 × 1.50 in) brushless DC tubeaxial cooling fan engineered for dense thermal management architectures. Operating on a nominal 12 VDC supply across a 10.8 to 13.2 VDC range, this AxiForce series unit delivers up to 203.0 CFM (345 m³/h) airflow and a maximum static back pressure of 1.285 in H₂O (320 Pa) at an operational speed of 6,500 RPM while consuming 30 W. Constructed with rugged fiberglass-reinforced plastic PBT housing and impeller assemblies, the fan incorporates a dual ball bearing suspension system rated for flexible multi-axis orientation. Advanced electronic control integration includes open-collector PWM speed modulation, a 2-pulse-per-revolution tachometer speed sensor, locked-rotor auto-restart cycling, and reverse polarity diode protection terminated via four 310 mm lead wires.
Key Features
- Aerodynamic Pressure Profile: Generates up to 203.0 CFM (345 m³/h) and 1.285 in H₂O (320 Pa) static pressure at 6,500 RPM.
- PWM Thermal Regulation: Features open-collector pulse-width modulation accepting 1 kHz to 30 kHz control frequencies for adaptive cooling performance.
- Tachometer Speed Output: Integrates a 2-pulse-per-revolution open-collector tachometer circuit capable of handling signal voltages up to 60 VDC.
- Integrated Circuit Protection: Incorporates locked-rotor auto-restart cycling and reverse-polarity diode protection for continuous electronic system safety.
- Precision Ball Bearings: Equipped with dual precision ball bearings enabling unrestricted universal shaft mounting and long service life.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | 8315100143 |
| Internal Reference Designation | VWC0120KUJBS / AF120-00143 12V P/2 6.500 |
| Product Series | AxiForce 120 |
| Product Category | DC Axial Fans |
| Fan / Component Type | Brushless DC Tubeaxial Cooling Fan |
| Supply Type | Direct Current (DC) |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | 10.8 to 13.2 VDC |
| Rated Speed | 6,500 RPM |
| Speed Tolerance | ±10% |
| Speed at Minimum Voltage (10.8 VDC) | 6,000 RPM (±15%) |
| Speed at Maximum Voltage (13.2 VDC) | 6,570 RPM (±15%) |
| Power Consumption (Nominal) | 30.0 W |
| Power Consumption Range | 26.0 W (at 10.8 VDC) to 33.75 W (at 13.2 VDC) |
| Rated Current | 2,500 mA (2.50 A) |
| Current Consumption Range | 2,400 mA (at 10.8 VDC) to 2,580 mA (at 13.2 VDC) |
| Starting Current Consumption | ≤ 3,700 mA (≤ 3.70 A) |
| Locked Rotor Current | Approx. 1,200 mA (1.20 A) |
| Maximum Free-Air Flow | 203.0 CFM (345 m³/h) |
| Optimal Operating Airflow Point | 170.7 CFM (290 m³/h) |
| Maximum Static Pressure | 1.285 in H₂O (320 Pa) |
| Static Pressure at Optimal Point | 0.329 in H₂O (82 Pa) |
| Sound Pressure Level (Free Air) | 60 dB(A) |
| Sound Power Level (Optimal Point) | 7.0 Bel(A) |
| Direction of Airflow | Air Exhaust over Struts |
| Direction of Rotation | Counterclockwise (Looking at Rotor) |
| Dimensions (L × H × D) | 120 × 120 × 38.0 mm (4.72 × 4.72 × 1.50 in) |
| Mounting Hole Pitch | 105.0 × 105.0 mm (4.13 × 4.13 in) |
| Mounting Screw Size | M4 (ISO 4762, degreased, without washer) |
| Max. Mounting Flange Torque | 80 N·cm (7.08 in·lbs) |
| Housing Material | Plastic (PBT reinforced) |
| Impeller Material | Plastic (PA reinforced) |
| Bearing System | Dual Precision Ball Bearings |
| Mounting Position | Any / Universal Shaft Orientation |
| Weight | 0.32 kg (0.705 lbs) |
| Electrical Connection | 4 Individual Lead Wires |
| Lead Wire Length | 310 mm ± 10 mm (12.20 in ± 0.39 in) |
| Power Lead Wire Gauge & Diameter | AWG 22 (Insulation Ø 1.7 mm) |
| Signal Lead Wire Gauge & Diameter | AWG 24 (Insulation Ø 1.6 mm) |
| Wiring Pinout / Assignment | Pin 1: Blue (- GND), Pin 2: Red (+ UB), Pin 3: White (Tachometer), Pin 4: Violet (PWM Input) |
| Control Input Type | PWM (Open Collector) |
| PWM Frequency Range | 1 kHz to 30 kHz (Typical: 25 kHz) |
| PWM Logic Low Voltage | ≤ 0.2 V |
| PWM Max. Source / Short-Circuit Current | ≤ 1 mA |
| PWM Warm Restart Time | Approx. 9 s (after shutdown) |
| Tachometer Output Type | /2 Open Collector (2 Pulses per Revolution) |
| Tachometer Operating Voltage (UBS) | ≤ 60 V |
| Tachometer Low Voltage (US low) | ≤ 0.4 V (at I sink = 2 mA) |
| Tachometer High Voltage (US high) | 60 V (at I source = 0 mA) |
| Tachometer Maximum Sink Current | ≤ 4 mA |
| Tachometer Signal Slew Rate | ≥ 0.5 V/µs |
| Locked Rotor Protection | Electronic Auto-Restart |
| Locked Rotor Cycling Timing | Typical: 1 s On (t3) / 9 s Off (t4), Initial Pulse: 1.6 s (t5) |
| Reverse Polarity Protection | Rectifying Diode (Max Residual Current IF ≤ 200 µA) |
| Electrical Safety Standards | DIN EN 62368, DIN EN 60335 |
| Dielectric Strength (Type Test) | 500 VAC for 1 Min (after 48 h at 95% RH, 25°C) |
| Insulation Resistance | RI > 10 MΩ (measured at 500 VDC for 1 min) |
| Clearance and Creepage Distance | 1.0 mm / 1.2 mm |
| Electrical Protection Class | Class III |
| Ingress Protection Rating | IP10 |
| Conducted Emissions Compliance | DIN EN 55032:2016-02 Class B (150 kHz – 30 MHz) |
| Radiated Emissions Compliance | DIN EN 55032:2016-02 Class B (30 MHz – 1000 MHz) |
| ESD Immunity Compliance | DIN EN 61000-4-2: Contact ±4 kV, Air ±8 kV (Class A) |
| Radiated RF Immunity Compliance | DIN EN 61000-4-3: 10 V/m (80 – 1000 MHz, Class A) |
| EFT / Burst Immunity Compliance | DIN EN 61000-4-4: ±2 kV on Power Lines (Class A) |
| Conducted RF Immunity Compliance | DIN EN 61000-4-6: 10 Vrms (150 kHz – 80 MHz, Class A) |
| Operating Temperature Range | -20 °C to +70 °C (-4 °F to +158 °F) |
| Storage Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| Humidity Resistance | Humid Heat Constant (DIN EN 60068-2-78, 14 Days) |
| Pollution Degree | Pollution Degree 1 (DIN EN 60664-1) |
| Service Life (L10 at 40 °C) | 45,000 Hours |
| Approvals & Certifications | CE, EAC, UL (UL507 E38324), VDE (EN 62368), CSA (C22.2 No. 113 audited by UL), RoHS3 |
Applications
ebm-papst 8315100143 tubeaxial fans deliver focused forced-air convection across high-impedance industrial power electronics and telecommunications hardware. Commonly deployed in telecom base station transceivers, network enterprise switches, server racks, and central office rectifiers, this model mitigates thermal throttling within compact enclosures. It additionally provides dependable ventilation for factory automation PLC racks, robotic motion controllers, and precision medical laboratory instruments.
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