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Round black centrifugal fan with metal housing and curved blades, 175mm diameter, 69mm thick, four wire leads visible

Fans

Fans R1G175-AB41-64 48V 34W 3100 RPM 175mm centrifugal case fan

SKU CH-3TDW-RHG1N

A 175 mm centrifugal case fan moves 330 CFM at 3100 RPM with PWM control and a tachometer signal

  • 48 V DC operation suits industrial and server power systems
  • 330 CFM airflow delivers strong cooling for dense enclosures
  • PWM control and tachometer output enable precise speed management
  • Ball-bearing motor rated for –25 °C to 60 °C ambient range
  • UL, CSA, VDE and CCC approvals confirm electrical safety compliance

Industrial 48V Centrifugal Fan

The Fans R1G175-AB41-64 is a 175mm diameter motorised impeller designed for forced electronic cooling in enclosures that demand high static pressure. It delivers 330.0 CFM at 3100 RPM while drawing 34W from a 48VDC supply. The ball-bearing motor operates between -25°C and 60°C and carries CCC, CSA, UL and VDE approvals.

Upgrade From Axial Fans

This centrifugal design replaces conventional axial case fans when airflow must be pushed through restrictive filters, dense heatsinks or long duct runs. The jump is worth it when system impedance limits axial units and the 9.24 m³/min rated flow at 65.0 dB(A) meets the thermal target without exceeding the acoustic budget.

4-Wire PWM Integration

Four leads provide power, ground, PWM speed control and a tachometer signal so the motherboard or fan controller can modulate RPM in real time. The 36–57VDC input range tolerates typical industrial bus variation and the 0.800A current rating eases power-budget planning. The 69mm depth and 1.6lb weight suit standard 175mm mounting patterns without blocking adjacent slots.

Highlights

  • 48 V DC operation suits industrial and server power systems
  • 330 CFM airflow delivers strong cooling for dense enclosures
  • PWM control and tachometer output enable precise speed management
  • Ball-bearing motor rated for –25 °C to 60 °C ambient range
  • UL, CSA, VDE and CCC approvals confirm electrical safety compliance

Specifications

No published specifications for this item yet.

Questions about this item

What are the exact mounting dimensions for the 175 mm diameter fan?

The fan measures 175 mm in diameter and 69.00 mm in width, weighing 725.7 g, so verify your chassis has a 17.5 cm round cut-out and enough depth for the 69 mm profile.

How do I wire the four leads correctly for PWM control and tachometer feedback?

Connect the 48 VDC supply (36–57 VDC range) to the power leads, then route the PWM input and tach output to the motherboard header; the unit draws 0.800 A at 34 W, so ensure the header can supply that current.

When should I plan to replace the ball-bearing assembly?

The ball bearing is rated for continuous operation between -25 °C and 60 °C at 3100 RPM; monitor for rising noise above the specified 65.0 dB(A) or RPM drop as indicators that the bearing is nearing end of life.

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