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Hudson Tuf-Lite® IV 5000M fan hub parts, 26 to 30 ft

The Hudson 5000M is the hub series for large Tuf-Lite IV fans with black M blades, used on large air coolers and cooling towers from 26 to 30 ft in diameter with 6 to 12 blades. Hubs take an R-2, S-2 or U-1 bushing for shafts from 2.68" to 5.50". Fan-Div supplies replacement hub assemblies, hub parts, seal discs and blade clamps for 5000M fans, matched to your fan.

5000M specifications

Fan diameter
26 to 30 ft
Blades
Tuf-Lite IV (M), black. 6 to 12 per fan
Bushings
R-2 (2.68" to 3.62"), S-2 (3.68" to 4.19"), U-1 (4.25" to 5.50")
Blade clamp halves
Powder epoxy coated die cast aluminum (standard) or powder epoxy coated ductile iron
Clamp bolt torque
316 stainless bolts: 130 ft-lb lubricated. Grade 8 galvanized: 250 ft-lb lubricated, 280 ft-lb dry
Tip clearance
FRP or metal fan stack: 1" to 1-1/2". Concrete: 3/8" to 1-1/2"
Seal disc
64" on 6 to 8 blades, a 76" kit on 9 to 12 blades
Nameplate example
APT 28M 8

Sizes covered: 26, 27, 28, 29, 30 ft. On the nameplate these read APT 26M, APT 27M, APT 28M, APT 29M, APT 30M, followed by the blade count.

5000M hub assemblies

Hudson lists 5000M hubs by fan diameter, blade count and bushing. Tell us those three and we'll match the hub, seal disc and clamp parts to your fan. Get in touch.

The 9 to 12 blade hubs are shared with the 5000K.

How to read a 5000M nameplate

Hudson fans carry an adjustable pitch code on the nameplate. APT 28M 8 breaks down like this:

  • APT: adjustable pitch fan.
  • The number: fan diameter in feet.
  • M: the blade, here Tuf-Lite IV. 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 from Hudson's published 5000M 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.

In the field
Fan and shaft bearing seen through an access door, with a vibration switch mounted on the frame Fan blade tips running close to a honeycomb tip seal ring inside the fan ring Motor, timing belt drive and fan shaft bearings under an air cooler, with laser alignment in progress Fan hub, motor mount and vibration switch under an air cooler, with a tip seal ring behind
5000M questions

Before you order.

Do the 5000M and 5000K share hub parts?

For 9 to 12 blades, yes: Hudson lists the same hub assemblies and hub parts for both. The 6 to 8 blade 5000M hubs are their own.

What torque do the 5000M blade clamp bolts take?

It depends on the bolt. 316 stainless bolts take 130 ft-lb lubricated. Grade 8 galvanized bolts take 250 ft-lb lubricated or 280 ft-lb dry.

Which seal disc fits a 5000M fan?

A 64" disc on fans with 6 to 8 blades, and a 76" kit on 9 to 12 blades. Tell us the blade count and we'll match the part.

Request more info

Tell us what you're running.

Call us or send a request. We'll match 5000M hub, seal disc and clamp parts to your fan and call you back.

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