This is a replacement rear-flange bearing mount for older PolarCool 36" belt drive evaporative cooler fans and select 48" models. If your fan motor has become noisy, wobbly, or misaligned, this bearing assembly is likely the fix.
Belt drive evaporative cooler fans depend on a properly seated rear-flange bearing to keep the motor shaft aligned and the fan wheel spinning true. Over years of continuous cooling-season use, the bearing wears, alignment drifts, and vibration increases. This mount is built for that replacement job on older PolarCool 36" belt drive units and select 48" fans. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
- Fits older model 36" single-speed belt drive fans.
- Fits select 48" fan models (specific 48" units not enumerated by manufacturer).
- Does NOT fit current-production 36" or 48" fan models without verification of parent model — confirm your unit's age/model before ordering.
- Not confirmed for direct-drive fan assemblies; this is a belt drive rear-flange bearing mount.
- Genuine PolarCool replacement component for the assembly it is designed to fit.
- Built for continuous-duty cooling season operation.
- Supports motor and fan wheel alignment to reduce vibration.
- Designed for straightforward DIY installation without specialty tools.
| Spec | Value | Unit |
|---|---|---|
| Part Number | 6403-1114 | — |
| Type | Replacement Rear-Flange Bearing Mount | — |
| Compatible Fan Size | 36 (older model, single speed) | inches |
| Compatible Fan Size (select models) | 48 | inches |
| Price | 96.00 | USD |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Compatible with older model 36" single-speed belt drive fans.
- Compatible with select 48" fan models.
- NOT confirmed compatible with current-production 36" or 48" units — verify model and age first.
- NOT designed for direct-drive fan motors.
| Category | Detail |
|---|---|
| Installation Safety | Disconnect power to the fan before beginning any work. |
| Material Durability | Built to withstand continuous use per manufacturer description [NEEDS VERIFICATION for exact material spec] |
FAQ
Q: Will this bearing mount fit any 36" belt drive fan?
A: It is designed for older model 36" belt drive fans, not all current 36" belt drive units. Confirm your fan's model and age against PolarCool documentation before ordering.
Q: Does this part work on 48" fans?
A: It fits select 48" fan models only. It is not a universal fit across all 48" models, so verify compatibility with your specific unit.
Q: Can I install this myself?
A: Yes. The mount is designed for straightforward installation: disconnect power, remove the old bearing assembly, align and secure the new mount, then restore power and test the fan.
Q: What does this part replace?
A: It replaces a worn or damaged rear-flange bearing assembly that supports the motor and keeps the fan shaft aligned on older PolarCool belt drive fans.
Warranty & Registration: Manufacturer warranty terms for this part are not detailed in the available product data. [NEEDS VERIFICATION] Refer to the "Resources (System Manuals and Warranty)" Tab above for manufacturer warranty documentation and registration steps.
