Bracket Fan

Bracket Fan B4020

Name: Bracket Fan B4020 Bracket Fan
Brand: Ruifengda

The Bracket Fan B4020 is a 40 × 40 × 20 mm axial fan supplied with its mounting bracket, ready to bolt onto panels and housings. A quick, low-cost cooling upgrade for small enclosures and electronics racks.

Frame Size40 × 40 × 20 mm

Voltage12 V DC

Max Airflow≈ 16 CFM

BearingSleeve / One-ball / Dual-ball

Request a Quote → Ask for Datasheet

Product Overview

A bracket-mounted 40 × 40 × 20 mm fan, the Bracket Fan B4020 is aimed at OEM enclosures where the fan is screwed to an internal panel rather than clipped into a frame.

Our Shenzhen line builds the Bracket Fan B4020 end to end — winding, balancing, assembly and 100 % aging. Because no step is outsourced, we can hold batch consistency and adjust bearing grade, lead length or speed binning to your production schedule.

Key Features

Mounting bracket included — installs directly on panels and housings
Standard hole pattern for quick OEM integration
5 V / 12 V / 24 V DC versions for electronics racks
Sleeve or ball bearing options
Compact depths from 10 mm for tight enclosures
100 % tested before shipment from our Shenzhen factory

Note: Specification values are representative; measured performance depends on system resistance and ambient temperature. Ask for the measured P-Q curve with your sample.

Typical Applications

Security & access devices Small control boxes Audio equipment Retail displays & kiosks Set-top boxes & routers Portable instruments

Full Specifications

Frame Size	40 × 40 × 20 mm
Rated Voltage	12 V DC (5 V / 24 V optional)
Rated Current	0.20 A (at rated voltage, max speed)
Speed	5,000 rpm (typical)
Airflow	16 CFM / 27 m³/h (typical, free air)
Static Pressure	54 Pa / 5.5 mmH₂O (typical, max)
Noise	31 dBA at 1 m (max speed)
Bearing Type	Sleeve / One-ball / Dual-ball
Expected Life	40,000 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 — Bracket Fan B4020

What mounting options does Bracket Fan B4020 offer?

Bracket Fan B4020 ships with its integrated bracket for panel or wall mounting; bracket angle, hole pitch and rubber isolators can be customized to your chassis drawing.

Is Bracket Fan B4020 suitable for outdoor or humid environments?

Standard versions are IP54-level when paired with a grille. For outdoor or wash-down use, order the conformal-coated or fully potted version of Bracket Fan B4020 — we will advise the right protection level for your environment.

Can Bracket Fan B4020 be supplied with a finger guard and cable?

Yes. Metal or plastic finger guards, lead-wire length, terminal and connector types are all selectable. Tell us the installation space and we will configure the kit.

What is the expected life of Bracket Fan B4020?

With dual-ball bearings, Bracket Fan B4020 reaches an L10 life of about 40,000–50,000 h at 40 °C. Life derates with ambient temperature — send us your thermal profile and we will confirm the estimate.