DC Axial Fan

DC 7038

Name: DC 7038 DC Axial Fan
Brand: Ruifengda

A compact DC axial fan in a 70 × 70 × 38 mm frame, engineered for continuous-duty cooling of electronics and cabinets, with your choice of voltage, speed-control signal and bearing system — manufactured and 100 % tested in our Shenzhen factory.

Frame Size70 × 70 × 38 mm

Voltage12 V DC

Max Airflow≈ 38 CFM

BearingSleeve / One-ball / Dual-ball

Request a Quote → Ask for Datasheet

Product Overview

Designed for continuous duty, the DC 7038 pairs a 70 × 70 × 38 mm frame with a thickened 38 mm blade channel, giving installers a balance of airflow, static pressure and low profile for electronics racks.

Each DC 7038 is bench-tested after a complete aging cycle at our Shenzhen facility, and test records are retained by serial batch. Tell us your voltage, duty point and environment and the confirmed curve for your order will match the sample you approved.

Key Features

Available in 5 V, 12 V, 24 V and 48 V DC to match your existing power rail
PWM (4-wire) or tachometer (3-wire) signal versions for closed-loop speed control
Sleeve, one-ball or dual-ball bearing options matched to mounting orientation and ambient temperature
Frame and impeller in flame-retardant UL94 V-0 reinforced plastic
Lead-wire, JST / Molex connector or terminal options; IP-rated waterproof versions on request
RoHS compliant; CE-certified series available for export projects

Note: Figures shown are standard-configuration values. Custom speed bins, voltage windows and bearing grades are quoted against your requirement.

Typical Applications

Industrial control cabinets Power supplies & inverters Telecom & network equipment Medical devices Consumer electronics 3D printers & CNC

Full Specifications

Frame Size	70 × 70 × 38 mm
Rated Voltage	12 V DC (5 V / 24 V / 48 V optional)
Rated Current	0.35 A (at rated voltage, max speed)
Speed	4,500 rpm (typical; PWM control 0–100 %)
Airflow	38 CFM / 65 m³/h (typical, free air)
Static Pressure	74 Pa / 7.5 mmH₂O (typical, max)
Noise	35 dBA at 1 m (max speed)
Speed Signal	Tach (FG) optional; PWM control optional
Bearing Type	Sleeve / One-ball / Dual-ball
Expected Life	45,000 h at 25 °C, 65 % RH (L10)
Operating Temp.	−10 °C to +70 °C (standard); −40 °C to +85 °C optional
Insulation Resistance	≥ 100 MΩ at 500 VDC
Dielectric Strength	500 VAC / 1 min (AC series: 1,500 VAC)
Frame & Impeller	UL94 V-0 PBT + fibreglass
Certification	CE / RoHS (UL on request)

Frequently Asked Questions — DC 7038

What is the MOQ for DC 7038? Can I buy samples first?

Sample orders of 1–5 pcs are accepted for evaluation. For volume orders of DC 7038, MOQ starts at 100 pcs for stock configurations and 500–1,000 pcs for custom voltage, cable or connector versions.

Can DC 7038 be ordered with PWM speed control or a tach signal?

Yes. The DC 7038 DC platform supports 4-wire PWM (25 kHz), voltage speed control, tach (FG) output and locked-rotor alarm (RD). Tell us your control board interface and we will match the wire harness.

Which bearing should I choose for DC 7038?

Sleeve bearings suit horizontal mounting and budgets; one-ball or dual-ball versions are recommended for vertical mounting, high ambient temperature and 24/7 duty. Dual-ball DC 7038 reaches an L10 life of about 50,000 h at 40 °C.

What is the lead time for DC 7038?

Samples ship in 5–7 working days. Mass production is typically 15–25 days depending on quantity; urgent orders can be scheduled with the production planner on request.