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Cast iron pillow block bearing with alloy steel radial ball insert, 7/8 inch cylindrical bore, open closure, bolt-through mount

Ntn

NTN UCP205-014D1 Pillow Block Bearing 7/8" Bore

SKU CH-4DD9-B9W4E

Pillow block bearing with 7/8 in cylindrical bore, cast-iron housing and alloy-steel radial ball insert rated to 5,900 RPM

  • Size3/8 in
  • Product typeTarps
  • Radial ball insert handles high-speed rotation up to 5,900 RPM
  • Cast iron housing resists shock and vibration in heavy-duty use
  • 7/8" cylindrical bore fits standard shafts without adapters
  • NLGI #3 equivalent grease protects from -40 °F to 250 °F
  • Two-bolt mounting on 4 1/8" centers simplifies installation

Pillow Block Bearing 7/8" Bore

The NTN UCP205-014D1 is a cast iron pillow block bearing with a 7/8 inch cylindrical bore. It uses a radial ball insert made from alloy steel and mounts via two bolt-through holes spaced 4 1/8 inches apart. The unit suits shaft support in conveyors, fans and general industrial machinery. Buyers who need a flanged housing or a larger bore must choose a different unit.

Sustained load behaviour

The bearing insert is lubricated with an NLGI #3 equivalent grease rated from -40 to 250 degrees Fahrenheit. Maximum speed is listed at 5,900 RPM, so continuous operation near that limit requires monitoring temperature rise. The open closure allows relubrication but admits contaminants in dirty environments. Installations without regular grease intervals will see reduced service life.

Mounting interface limits

Two bolt-through holes on a 4 1/8 inch center line fix the housing to the frame. Base height is 0.59 inch and overall height reaches 2.795 inches, setting the shaft centerline at 1 27/64 inch above the mounting surface. Shims or adjustable mounts are needed when exact alignment differs from these dimensions. The cast iron housing cannot be welded or drilled without risk of cracking.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 71% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameNTN
Product typeTarps
Size & build
Size3/8 in

Questions about this item

Does the 5,900 RPM limit generate noticeable heat during continuous operation?

The bearing is rated for a maximum temperature of 250 Degrees F and a minimum of -40 Degrees F, with NLGI #3 equivalent lubricant suited for sustained speeds up to 5,900 RPM.

What shaft size and mounting hardware are needed to install this 7/8" bore unit?

It fits a 7/8 inch cylindrical shaft and requires two bolts for the 4 1/8 inch centre-to-centre mounting holes.

Will the 2.795 inch overall height and cast iron housing align with my existing 205 series pillow blocks?

The centre height is 1 27/64 inches, base width is 1.496 inches and the housing is cast iron, matching standard UCP205 series dimensions.

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