UKP322+HE2322

UKP322+HE2322 Pillow Block Bearing
$1149.75 /Each    info

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Overview

Part Number UKP322+HE2322
Brand: LILY Brand: LILY Interchangeable With: AMI
Bearing Part Number UK322+HE2322
Housing Part Number P322
Product Series UKP300+H

Characteristics

System of Measurement Inch
Housing Style Pillow Block Bearing
Housing Configuration 1 Piece Solid
Bearing Type Ball Bearing
Bearing Duty Heavy Duty
Expansion Type Non-Expansion Bearing (Fixed)
Bore Type Round
Inner Ring Type Wide Inner Ring
Shaft Mount Type Tapered Adapter Sleeve Locking
Bearing Seal Type Double Sealed
Number of Mounting Holes 2

Dimensions

Shaft Diameter 4"
Bore Dia 4"
Width of Inner Ring 5.5"
Whole Length 20.6875"
Whole Width 5.5"
Overall Height 11.7031"
Center Height 5.9063"
Pillow Height 2.25"
Mounting Bolt Size 1.25"
Hole Ctr-to-Ctr Min 14.875"
Hole Ctr-to-Ctr Max 16.625"
Bore Dia Tolerance -0.0005" to 0"
Base Width 5.5 "
Hole Length 2.1563"
Hole Width 1.5625"
Width with Adapter Sleeve 4.134"

Material

Bearings Material AISI 52100 Steel
Housing Material Cast Iron

Performance

Dynamic Radial Load 46100 lbf
Static Radial Load 40200 lbf
Temperature Range -30° to 110 °C

Properties

Lubrication Required
Lubrication Fitting Tap 1/8-27 NPT
RoHS Compliant
REACH Compliant
Weight 95 lbs

What does UKP322+HE2322 mean?

UKP322+HE2322 is an AMI inch cast iron pillow block unit with a wide inner ring insert and tapered adapter sleeve locking, for a 4" (101.6 mm) shaft. The part number breaks down into 4 segments:

UK
Wide inner ring ball bearing insert, tapered adapter sleeve locking. Insert part number is UK322+HE2322
P
Housing style: cast iron pillow block. Housing part number is P322
322
Frame size 322, 300 series (heavy duty)
+HE2322
Tapered adapter sleeve HE2322, which mounts the unit on a 4" (101.6 mm) shaft

Frequently asked questions

What does UKP322+HE2322 mean?

UKP322+HE2322 is an AMI inch cast iron pillow block unit with a wide inner ring insert and tapered adapter sleeve locking, for a 4" (101.6 mm) shaft. UK = wide inner ring ball bearing insert, tapered adapter sleeve locking. Insert part number is UK322+HE2322, P = housing style: cast iron pillow block. Housing part number is P322, 322 = frame size 322, 300 series (heavy duty), +HE2322 = tapered adapter sleeve HE2322, which mounts the unit on a 4" (101.6 mm) shaft.

What is the bore size of UKP322+HE2322?

The bore of UKP322+HE2322 is 4" (101.6 mm).

The housing of pillow block bearing, crafted from iron, is engineered to withstand heavy-load and high-vibration conditions with the structural rigidity and dimensional stability needed to keep the overall mounted bearing assembly performing reliably over the long term.
Shaft retention is achieved through tapered adapter sleeve locking in this pillow block bearing unit, which secures the shaft reliably against heavy loads, high torque, and continuous vibration — provided the adapter sleeve is correctly seated and the locknut is tightened to the specified torque — without damaging the shaft surface.

Why choose Iron for the bearing housing?

Because this pillow block bearing is specifically designed for heavy-load and high-vibration conditions, cast iron delivers superior rigidity and dimensional stability where lighter or polymer housings are prone to deformation under load, making it a purpose-built choice for this application rather than a generic substitute.

Why does this bearing use Tapered Adapter Sleeve Locking to secure the shaft?

Tapered adapter sleeve locking works by compressing a precision-machined sleeve onto the shaft as the locknut is tightened, creating a strong concentric grip, which makes it well suited to applications where heavy loads, high torque, or frequent repositioning are required. Its main advantage over other shaft locking methods used in mounted bearing applications is superior holding force combined with self-centering alignment, which matters most when shaft runout, vibration, or the need for periodic bearing relocation demand a more robust and precise locking solution.

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