18 Watt Polestar Fan Motor Multi fit Sleeve Bearing

Pole Star Multi‑Fit Fan Motors (Sleeve & Ball Bearing)

Overview: What Are Multi‑Fit Motors?

Pole Star’s Multi‑Fit fan motors (also called universal refrigeration motors) are square-shaped (84 mm per side) shaded‑pole designs tailored for refrigeration applications like display cases, freezers, walk-in chillers, and vending machines

These motors feature a multi-fixing design, offering versatile mounting options:

• Tapped holes on front or rear casing
• Side bolts or the four case bolts
  • This flexibility enables mounting as ring-mount, grid-mount, or pedestal fans

They come neatly individually boxed, complete with all fixings and a spare fan hub—ideal for refrigeration engineers' van stock

Sleeve‑Bearing vs. Ball‑Bearing Models

Sleeve‑Bearing Options

• Standard option in the 84 range of motors (5–34 W)
• Simpler and cost-effective
• Best suited for horizontal installations
• Performance may degrade under dust and in vertical mounting
• Reliable at lower ambient temperatures (low oil viscosity aids longevity)

Ball‑Bearing (Dual) Options

• Flagship offering from Pole Star, with up to 10,000× longer lifespan than sleeve bearings
• Allows vertical mounting—critical for tight installations
• Resilient to dust ingress and high-temperature environments
• Minimised axial movement due to precision bearing design
• Justifies the slight extra cost with significantly better durability and flexibility