Motor Grader Cooling Fan – Diameter, Blade and Hub Guide
A motor grader cooling fan must move air in the correct direction through the radiator. Similar fans may use opposite blade pitch, different hubs or diameters and can cause overheating when misapplied.
Ordering basis: Confirm fan diameter, blade count and pitch, rotation, hub mounting and available shroud clearance.
Fan measurements and airflow clues
Measure overall diameter and blade count.
Record blade curvature and intended rotation.
Measure hub pilot and bolt circle.
Check fan offset and shroud tip clearance.
Overheating has multiple causes
Poor cooling may also come from a blocked radiator, loose belt, faulty clutch, damaged shroud or coolant-system issue. Confirm airflow direction before replacing the fan.
Clearance and guarding checks
Inspect blades for cracks and never straighten a damaged fan for service. Verify hub seating, fasteners, belt alignment and clearance through a full rotation before starting the engine.
Product record
| Component | Engine cooling fan |
| Part number | Not shown — verify from the original component or parts catalogue |
| Fitment rule | fan diameter, blade count, rotation, hub pilot, bolt pattern and shroud clearance |
Related product reference
Review the engine water-pump identification reference for another component-level identification workflow. The linked product is a reference only and does not establish interchangeability.
FAQ
Can a fan with the same diameter be used?
Only if blade pitch, rotation, hub, offset and clearance also match.
What happens if rotation is wrong?
Airflow can be reduced or reversed, causing poor cooling.
Should a cracked blade be repaired?
No. Replace a damaged fan using the correct service part.
Compatibility note: Match airflow direction and all hub and clearance dimensions.
