This is a direct-fit replacement shaft for 48" PolarCool evaporative cooling fans that use vertical internal motor supports and pillow block bearings. If your motor-to-propeller power transmission is worn, bent, or slipping, this cold rolled steel shaft restores proper alignment and airflow.
This shaft is machined from cold rolled steel for consistent strength under continuous rotation. The keyways are cut to align motor and propeller pulleys precisely, which keeps vibration and premature bearing wear in check on 48" evaporative cooling fans used in warehouse, outdoor, and industrial cooling applications. 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.
Critical Fitment & Requirements
- Diameter: 1" — Length: 15-3/8"
- Material: Cold Rolled Steel
- Fits newer and current 48" PolarCool models with vertical internal motor supports and pillow block bearings
- Does NOT fit models using flange bearings
- Requires two shear keys (SKU 1019-2417), sold separately — not included with this shaft
Key Benefits
- Cold rolled steel construction built for strength and long service life
- Precision-cut to 1" x 15-3/8" for exact drop-in replacement
- Machined keyways for secure, aligned pulley connections
- Direct-fit design reduces installation time versus fabricating or modifying a shaft
- Supports reliable airflow on warehouse, outdoor, and industrial evaporative coolers
| Spec | Value | Unit |
|---|---|---|
| Material | Cold Rolled Steel | — |
| Diameter | 1 | in |
| Length | 15-3/8 | in |
| Required Shear Keys | SKU 1019-2417 | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Compatible with: Newer and current 48" PolarCool evaporative cooling fans equipped with vertical internal motor supports and pillow block bearings
- NOT compatible with: Models using flange bearings
- Required accessory: Two shear keys, SKU 1019-2417 (sold separately, not included)
| Consideration | Guidance |
|---|---|
| Power Safety | Disconnect power and follow lockout/tagout procedures before installation |
| Pre-Install Inspection | Inspect keyways, pulleys, and bearings for wear or damage during installation |
| Alignment | Ensure proper alignment of motor and propeller pulleys to prevent vibration and premature wear |
FAQ
Will this shaft fit any 48" PolarCool evaporative cooler?
It fits newer and current 48" PolarCool models with vertical internal motor supports and pillow block bearings. It does not fit models that use flange bearings, so check your bearing type before ordering.
What size is this shaft?
It measures 1 inch in diameter by 15-3/8 inches in length, precision-cut with machined keyways for the motor and propeller pulleys.
Do I need any additional parts to install this shaft?
Yes. You need two shear keys, SKU 1019-2417, which are sold separately and required for proper installation.
Can I use this shaft on a unit with flange bearings?
No. This shaft is designed for pillow block bearing setups with vertical internal motor supports. It is not compatible with flange bearing configurations.
Warranty & Registration
Manufacturer warranty terms for this part were not included in the provided data. [NEEDS VERIFICATION] Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for manufacturer warranty documentation. Ask us before you order if you need help confirming your bearing type or shear key requirements — we always reply back.
