OEM Industries 4020H24S ND1 40mm 24V 0.11A 2-Wire Ball Bearing Fan

Compact 40 mm cooling fan

The OEM Industries 4020H24S ND1 is a 40 mm square fan designed for tight chassis where a low-profile CPU air cooler is required. It runs on 24 V DC at 0.11 A through a two-wire connection and uses a ball bearing for durable rotation. The black frame fits standard 40 mm mounting holes in industrial or embedded systems.

Replaces larger or sleeve-bearing units

This fan suits builds that previously used thicker coolers or sleeve-bearing fans which wore out under continuous duty. The jump is worth it when space is limited to a 40 mm footprint and a 24 V supply is already present. It is not for builders who need higher airflow than a 40 mm frame can deliver or who require PWM speed control.

Steady airflow under constant load

Ball-bearing construction maintains consistent speed during sustained operation without the friction increase seen in sleeve alternatives. The two-wire design provides fixed-voltage running suited to always-on environments such as servers or industrial controllers. No LED lighting means no extra current draw or light bleed in dark racks.