DELTA AFB0924SH 9025 DC24V 0.50A 9CM 2-Wire Dual Ball Cooling Fan

DELTA · DC Axial Fan · 92x92x25mm · 24V · Dual Ball · In stock

What Is the DELTA AFB0924SH Cooling Fan?

The DELTA AFB0924SH is a high-speed 92x92x25mm (sometimes called 9025 or 9cm) DC axial cooling fan manufactured by Delta Electronics, one of the world's largest and most respected fan manufacturers. It operates on 24V DC, draws 0.50A, and features dual ball bearings — the bearing type preferred for 24/7 industrial and server applications where long service life and resistance to high temperatures are critical. The "SH" suffix indicates the high-speed variant within the AFB series, delivering higher airflow and static pressure than the standard-speed "SL" or medium-speed "SM" variants.

In short: This is a genuine Delta 92mm x 25mm, 24V DC, dual ball bearing, high-speed cooling fan. If your equipment uses a 92mm fan that has become noisy, seized, or failed, and you see "AFB0924SH" on the original fan's label, this is the exact replacement.

Why the Bearing Type Matters

Dual Ball Bearings vs. Sleeve Bearings

Delta offers the AFB0924 in several bearing configurations. The "dual ball" designation in this model means both the front and rear bearings are precision ball bearings, not sleeve (oil-impregnated bronze) bearings. Ball bearing fans have several advantages: they can be mounted in any orientation (sleeve bearing fans are typically limited to horizontal mounting), they tolerate higher ambient temperatures without lubricant degradation, and their service life (typically 50,000-70,000 hours L10 at 40 degrees C) significantly exceeds that of sleeve bearing equivalents. The trade-off is slightly higher acoustic noise and cost — acceptable compromises in industrial equipment where reliability trumps quiet operation.

2-Wire Configuration — No Tach, No PWM

This fan has two leads: positive (typically red) and negative (typically black). It does not include a tachometer (RPM sense) wire or a PWM speed control wire. The fan runs at full speed whenever 24V DC is applied. If your application requires speed monitoring (to detect fan failure) or variable speed control, you will need a 3-wire (tach) or 4-wire (PWM) variant. For basic cooling where the fan simply needs to run continuously at full speed, a 2-wire configuration is the simplest and most reliable choice.

Key Specifications

Frequently Asked Questions

How do I confirm polarity when replacing this fan?

Delta AFB series fans typically use red for positive (+24V DC) and black for negative (GND/0V). However, always verify against the original fan's wiring or the equipment's service manual. Reversing polarity on a DC fan will prevent it from spinning but usually will not cause damage if corrected quickly — most DC brushless fans include reverse-polarity protection. If the replacement fan does not spin when powered, disconnect immediately and check the polarity before troubleshooting further.

Can I replace a failed sleeve bearing fan with this dual ball bearing model?

Yes, provided the dimensions (92x92x25mm), voltage (24V DC), and connector match. Upgrading from sleeve to ball bearing is actually a reliability improvement — the ball bearing fan will last longer, especially in warm environments or when mounted in a non-horizontal orientation. The dual ball bearing fan may be slightly louder than the sleeve bearing version it replaces, but this is rarely a concern in industrial equipment enclosures where ambient noise levels are already high.

What is the difference between AFB0924SH, AFB0924SM, and AFB0924SL?

These are speed variants within the same Delta AFB0924 frame. SH = Super High speed (highest airflow, highest noise, highest power consumption — this model). SM = Super Medium speed (balanced airflow/noise). SL = Super Low speed (quietest, lowest airflow). If you are replacing a failed fan, match the exact suffix. Using an SL to replace an SH will result in significantly less cooling airflow and may cause your equipment to overheat. Using an SH to replace an SL will provide excess cooling at the cost of higher noise and power consumption.

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