Hudson Tuf-Lite® III 4000KW wide chord fan hub parts, 11 to 20 ft
The Hudson 4000KW is the hub series for Tuf-Lite III KW wide chord fans, used on air coolers and cooling towers from 11 to 20 ft in diameter with 4 to 12 blades. The blades are white. Hubs take a Q-2, R-2 or S-2 bushing for shafts from 1" to 4.19". Fan-Div supplies replacement hub assemblies, hub parts, seal discs and blade clamps for 4000KW fans, matched to your fan.
4000KW specifications
- Fan diameter
- 11 to 20 ft
- Blades
- Tuf-Lite III KW wide chord, white. 4 to 12 per fan
- Bushings
- Q-2 (1" to 2.62"), R-2 (2.68" to 3.62"), S-2 (3.68" to 4.19")
- Blade clamp halves
- C4742A epoxy coated aluminum (standard), 4742A unpainted aluminum, 65010 epoxy coated ductile iron
- Clamp bolt torque
- 120 ft-lb lubricated, 130 ft-lb dry
- Tip clearance
- FRP or metal fan stack: 3/8" to 3/4". Concrete: 1/4" to 3/4"
- Seal disc
- By blade count, see the table
- Nameplate example
APT 14KW 6 2 7/8" BORE
Sizes covered: 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ft. On the nameplate these read APT 11KW, APT 12KW, APT 13KW, APT 14KW, APT 15KW, APT 16KW, APT 17KW, APT 18KW, APT 19KW, APT 20KW, followed by the blade count.
4000KW hub assembly and part numbers
Every published 4000KW hub, by fan diameter, blade count and bushing. Don't see your combination? Get in touch.
| Fan diameter | Blades | Bushing | Shaft range | Hub assembly no. | Hub part no. | Seal disc |
|---|---|---|---|---|---|---|
| 11 to 20 ft | 4 | Q-2 | 1" to 2.62" | 4104KW | 77443 | 53" 81114 |
| 11 to 20 ft | 4 | R-2 | 2.68" to 3.62" | 4204KW | 77453 | 53" 81114 |
| 11 to 20 ft | 4 | S-2 | 3.68" to 4.19" | 4304KW | 77463 | 53" 81114 |
| 11 to 20 ft | 5 | Q-2 | 1" to 2.62" | 4105KW | 77444 | 53" 81114 |
| 11 to 20 ft | 5 | R-2 | 2.68" to 3.62" | 4205KW | 77454 | 53" 81114 |
| 11 to 20 ft | 5 | S-2 | 3.68" to 4.19" | 4305KW | 77464 | 53" 81114 |
| 11 to 20 ft | 6 | Q-2 | 1" to 2.62" | 4106KW | 77445 | 53" 81114 |
| 11 to 20 ft | 6 | R-2 | 2.68" to 3.62" | 4206KW | 77455 | 53" 81114 |
| 11 to 20 ft | 6 | S-2 | 3.68" to 4.19" | 4306KW | 77465 | 53" 81114 |
| 11 to 20 ft | 7 | Q-2 | 1" to 2.62" | 4107KW | 77446 | 64" 81115 |
| 11 to 20 ft | 7 | R-2 | 2.68" to 3.62" | 4207KW | 77456 | 64" 81115 |
| 11 to 20 ft | 7 | S-2 | 3.68" to 4.19" | 4307KW | 77466 | 64" 81115 |
| 11 to 20 ft | 8 | Q-2 | 1" to 2.62" | 4108KW | 77447 | 64" 81115 |
| 11 to 20 ft | 8 | R-2 | 2.68" to 3.62" | 4208KW | 77457 | 64" 81115 |
| 11 to 20 ft | 8 | S-2 | 3.68" to 4.19" | 4308KW | 77467 | 64" 81115 |
| 11 to 20 ft | 9 | Q-2 | 1" to 2.62" | 4109KW | 77448 | 64" 81115 |
| 11 to 20 ft | 9 | R-2 | 2.68" to 3.62" | 4209KW | 77458 | 64" 81115 |
| 11 to 20 ft | 9 | S-2 | 3.68" to 4.19" | 4309KW | 77468 | 64" 81115 |
| 11 to 20 ft | 10 | Q-2 | 1" to 2.62" | 4110KW | 77449 | 76" kit D5177 |
| 11 to 20 ft | 10 | R-2 | 2.68" to 3.62" | 4210KW | 77459 | 76" kit D5177 |
| 11 to 20 ft | 10 | S-2 | 3.68" to 4.19" | 4310KW | 77469 | 76" kit D5177 |
| 11 to 20 ft | 11 | Q-2 | 1" to 2.62" | 4111KW | 77450 | 76" kit D5177 |
| 11 to 20 ft | 11 | R-2 | 2.68" to 3.62" | 4211KW | 77460 | 76" kit D5177 |
| 11 to 20 ft | 11 | S-2 | 3.68" to 4.19" | 4311KW | 77470 | 76" kit D5177 |
| 11 to 20 ft | 12 | Q-2 | 1" to 2.62" | 4112KW | 77451 | 76" kit D5177 |
| 11 to 20 ft | 12 | R-2 | 2.68" to 3.62" | 4212KW | 77461 | 76" kit D5177 |
| 11 to 20 ft | 12 | S-2 | 3.68" to 4.19" | 4312KW | 77471 | 76" kit D5177 |
How to read a 4000KW nameplate
Hudson fans carry an adjustable pitch code on the nameplate. APT 14KW 6 2 7/8" BORE breaks down like this:
- APT: adjustable pitch fan.
- The number: fan diameter in feet.
- KW: the blade, here Tuf-Lite III wide chord. H is Tuf-Lite II, K is Tuf-Lite III, KW is Tuf-Lite III wide chord and M is Tuf-Lite IV.
- The next number: blade count.
- The bore: shaft size, where it's given. Large fans are often ordered without it.
Match the bore to a bushing: Q-2 fits 1" to 2.62", R-2 fits 2.68" to 3.62", S-2 fits 3.68" to 4.19" and U-1 fits 4.25" to 5.50". Read those off the nameplate and get in touch. We'll match the parts.
Specifications and part numbers from Hudson's published 4000KW installation manual, put in our own words. Common parts for every series, including clamp bolts, hub spools and seal discs, are on the Hudson parts page. Every number is also in the part number lookup.
Before you order.
What is the difference between a 4000KW and a 3000K fan?
The 4000KW carries Tuf-Lite III KW wide chord blades on fans from 11 to 20 ft, with a third bushing size (S-2) for shafts up to 4.19". The 3000K carries standard K blades from 6 to 15 ft on Q-2 and R-2 bushings.
What torque do the 4000KW blade clamp bolts take?
120 ft-lb lubricated, 130 ft-lb dry.
What tip clearance does a 4000KW fan need?
3/8" to 3/4" in an FRP or metal fan stack, and 1/4" to 3/4" in a concrete stack.
Tell us what you're running.
Call us or send a request. We'll match 4000KW hub, seal disc and clamp parts to your fan and call you back.
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