750-AAYK: Dell PowerEdge R640 High Performance Fan Module
Also listed as: 018H7P, 18H7P · made by Delta Electronics
The Dell 750-AAYK is a Dell PowerEdge R640 High Performance Fan Module delivering targeted cooling airflow and thermal stability for Dell PowerEdge R640 servers.
Specifications
| Part number | 750-AAYK |
|---|---|
| Brand | Dell |
| Made by | Delta Electronics |
| Type | Fans |
| Other numbers | 018H7P, 18H7P |
| Status | current |
| Form factor | Hot-Plug 40mm Dual-Rotor High Performance Fan Module |
| Speed | Up to 21,000 RPM |
| Generation fit | 14th Generation PowerEdge (R640) |
About the 750-AAYK
The Dell 750-AAYK is a Dell PowerEdge R640 High Performance Fan Module engineered to deliver high-velocity cooling airflow across internal server components. Featuring a dual-rotor counter-rotating motor design, the 750-AAYK provides static pressure to cool high-wattage processors, memory banks, and expansion cards in high-density Dell PowerEdge chassis. The 750-AAYK maintains safe operating temperatures under continuous datacenter computing loads.
Compatibility
Designed specifically for Dell PowerEdge R640 servers, the 750-AAYK installs into the central hot-plug fan bay. The 750-AAYK integrates with chassis fan brackets and connects through blind-mate power pins for tool-less replacement during server operation.
How to identify a genuine unit
Genuine Dell 750-AAYK fans display a factory label showing DP/N 018H7P, Delta or NMB manufacturer markings, and operating voltage/amperage specifications. In iDRAC Fans inventory, the 750-AAYK fan reports real-time RPM speed and operational health status, allowing predictive maintenance alerts.
Buying used
When evaluating a pre-owned 750-AAYK, spin both fan rotors manually to ensure bearings rotate smoothly without grinding, resistance, or wobbling. Check the plastic housing and blind-mate connector pins on the 750-AAYK for physical damage. Confirm in iDRAC that the 750-AAYK modulates PWM speed normally under thermal stress.
Fits these models
Check compatibility with Dell
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell 750-AAYK.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent part numbers
- Dell 18H7P Dell direct spare part number for R640 High Performance Fan
FAQ
How many fan modules does an R640 require?
Dual-processor PowerEdge R640 configurations require eight 40mm cooling fan modules.
Are 1U fans louder than 2U fans?
Yes, smaller 40mm fans must spin at much higher RPMs (up to 21,000 RPM) to generate equivalent airflow, producing noticeable high-pitch acoustic output.
Buying or selling 750-AAYK?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell PowerEdge R640 Cooling Fan Specifications and Replacement, checked 2026-10-27