Wing Fan Uniboss Center Boss, 9-Bolt HD, P1 Taper, AR/BR

Wing Fan uniboss (P1 taper center boss), heavy-duty 9-bolt, AR/BR style. It has a 75 mm pilot that fits a fan hub bored to 75 mm, bolts in with 9 bolts on a 110 mm circle, and clamps to your shaft with a P1 split taper bushing. The bushing is not included.

• 75 mm pilot, fits hubs bored 75 mm
• 9 bolts on 110 mm
• AR/BR style
• Takes a P1 taper bushing (sold separately)

About the P1 center boss

A P1 uniboss bolts into the center of the hub and clamps to your shaft with a P1 split taper bushing, so one hub fits a range of shaft sizes. AS/BS and AR/BR are the two boss styles; they set which side the bushing and its bolts face. Pick the style that gives you access on your machine. Not sure? Send a photo of your current fan. Bushings: P1 taper bushing, 3/4" to 1-1/2" bore.

Other styles

Also in AS/BS and the lighter-duty 5-bolt. Multiwing and Wing Fan bosses are interchangeable.

Not sure what you have?

Use our fan identification form. It walks you through the diameter, blade count, hub size and series in a few minutes, and you can attach photos. We will confirm the right part before you order.

Ordering and shipping

• Stock shown is what is on our shelf today.
• Order by 11 am Pacific and in-stock parts ship the same day. After 11 am we can still ship the same day in some cases. Call (360) 661-0875 for a rush.
• Shows sold out? Call or use the fan identification form and we will give you a lead time or suggest an equivalent.
• Saturday delivery is possible in some cases. Call to arrange it.
• Shipping overages are refunded.

About Amphibious Marine

We are a dealer for Multiwing and Wing Fan fans and blades, and we specialize in fast fan repairs: blade cutting, balancing, replacement hubs and complete fans. When we don't have the exact part on hand, our fan design software lets us design a permanent or temporary replacement fan for time-critical applications, and we can often ship the same day.