Cooling Tower Fan Motor Replacement China

Below is a practical, buyer-oriented guide for sourcing cooling tower fan motor replacement from China, especially for HVAC, industrial, and power plant cooling towers.

What Is a Cooling Tower Fan Motor Replacement?

A replacement cooling tower fan motor is designed to:

* Directly replace the original OEM motor

* Match power, speed, mounting, shaft, and thrust load

* Operate reliably in hot, humid, corrosive environments

Common types:

* Vertical hollow shaft (VHS) motors

* Vertical solid shaft motors

* Horizontal TEFC motors

Key Specs to Match (Critical for Replacement)

When replacing a cooling tower fan motor, all items below must match:

Electrical

* Power: kW / HP

* Voltage: 380 / 400 / 415 / 440 / 460 V

* Frequency: 50 Hz / 60 Hz

* Speed: 720 / 960 / 1450 / 1750 RPM

* Efficiency: IE2 / IE3 / IE4

* VFD compatibility: Inverter-duty (if applicable)

Mechanical

* Motor type: Vertical or Horizontal

* Shaft: Hollow or Solid

* Thrust rating: Standard / Medium / High

* Mounting: Flange / Foot / P-base

* Shaft diameter & length

* Keyway size

Protection

* Enclosure: TEFC

* IP rating: IP55 / IP56

* Insulation: Class F (Temp rise B)

* Anti-corrosion coating

  Why Buy Replacement Motors from China?

✔ Exact replacement for Marley / BAC / EVAPCO / SPX

✔ OEM & private labeling

✔ Short lead time (7–20 days)

✔ Cost saving 20–40% vs OEM brands

✔ Export packing & global shipping

Main supplier regions:

Zhejiang • Jiangsu • Anhui (Wannan motor base)

⚠️ Common Replacement Mistakes (Avoid These)

❌ Using standard induction motor (not cooling tower duty)

❌ Ignoring thrust bearing capacity

❌ Wrong shaft size or mounting flange

❌ No moisture drain or anti-corrosion protection

❌ No vibration test before shipment

What to Send Chinese Suppliers (RFQ Checklist)

To get correct replacement:

1. Original motor nameplate photo

2. Cooling tower brand & model

3. Vertical or horizontal?

4. Shaft type & size

5. Voltage / Hz

6. IP rating requirement

7. Quantity & delivery time