This is a replacement steel shaft for 48" PolarCool evaporative cooling fans that use "X" brace motor supports and pillow block bearings. If your fan's shaft is worn, bent, or the keyways are stripped, this direct-fit part restores proper power transmission from motor to propeller.
Cold rolled steel construction gives this shaft the strength and dimensional precision needed for continuous duty in evaporative cooling applications - warehouse cooling, outdoor cooling systems, and industrial air coolers. The keyways are machined at the factory for secure motor and propeller pulley connection, so you get a direct-fit replacement without on-site machining. 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: 16"
- Keyway configuration: 2"
- Material: Cold Rolled Steel
- Fits 48" PolarCool evaporative cooling fans with "X" brace motor supports and pillow block bearings only
- Does NOT fit PolarCool fan models without "X" brace motor supports or pillow block bearings
- Requires two shear keys (SKU 1019-2417) for installation - sold separately, not included
Misaligned motor and propeller pulleys are the most common cause of premature shaft and bearing failure on evaporative coolers - the resulting vibration works keyways loose and can shear the keys over time. Before final tightening, check pulley alignment with a straightedge or torpedo level across both pulley faces, and confirm the shaft seats fully in each pillow block bearing without side load. Always install both shear keys (SKU 1019-2417) - never run the shaft with a single key or a field-fabricated substitute. Follow lockout/tagout procedures and the manufacturer's installation guidelines before re-energizing the fan motor.
Key Benefits
- Cold rolled steel construction for strength and long-lasting performance
- Precision-cut to length with keyways machined for secure pulley connection
- Direct-fit replacement design reduces installation complexity and downtime
- Restores reliable power transmission from motor to propeller for efficient airflow
- Supports 48" evaporative coolers, swamp coolers, and high-velocity fans
| Spec | Value | Unit |
|---|---|---|
| Material | Cold Rolled Steel | - |
| Diameter | 1 | in |
| Length | 16 | in |
| Keyway Configuration | 2 | in |
| Required Shear Keys | SKU 1019-2417 | - |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: 48" PolarCool evaporative cooling fans with "X" brace motor supports and pillow block bearings
- Does NOT fit: 48" PolarCool models without "X" brace motor supports or without pillow block bearings
- Required accessory (sold separately): two shear keys, SKU 1019-2417
- Verify your exact fan model configuration before ordering
| Item | Guideline |
|---|---|
| Material Safety | Cold rolled steel - inspect for wear, rust, or damage during installation |
| Electrical Safety | Disconnect power and follow lockout/tagout procedures before installation |
| Alignment | Ensure proper alignment of motor and propeller pulleys to prevent vibration and premature wear |
FAQ
Will this shaft fit any 48" PolarCool fan?
No. It is designed only for 48" PolarCool models with "X" brace motor supports and pillow block bearings. Verify your model configuration before ordering.
What are the dimensions of this shaft?
It is 1" in diameter, 16" long, with a 2" keyway configuration.
Do I need any other parts to install this shaft?
Yes. You need two shear keys (SKU 1019-2417), sold separately, to properly secure the motor and propeller pulleys.
What material is the shaft made from?
It is made from cold rolled steel for strength and durability.
What should I do before installing this shaft?
Disconnect power and follow lockout/tagout procedures, then inspect keyways, pulleys, and bearings for wear or damage before installation.
Warranty & Registration
Manufacturer warranty terms for this part were not provided in the source data. [NEEDS VERIFICATION] Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for manufacturer warranty details, or ask us before you order if you need confirmation - we always reply back.
