UCTBL204-12MZ20W

UCTBL204-12MZ20W Pillow Block Bearing
$38.28 /Each    info

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Overview

Part Number UCTBL204-12MZ20W
Brand: LILY Brand: LILY Interchangeable With: AMI
Bearing Part Number UC204-12MZ20
Housing Part Number TBL204

Characteristics

System of Measurement Inch
Bearing Type Ball Bearing
Bearing Seal Type Double Sealed
Inner Ring Type Wide Inner Ring
Mounted Type Pillow Block Bearing
Shaft Mount Type Set Screw Locking
Product Series UCTBL200MZ20
Housing Color White
Lubrication Fitting Tap 1/4-28 UNF

Dimensions

Bore Dia 0.75"
Bore Dia Tolerance -0.0005" to 0"
Fixed Crew Dia 3/8-16"
Hole Length 0.4375"
Overall Height 2.5938"
Pillow Width 1.3594"
Center Height 1.3125"
Whole Length 2.875"
Hole Center to Center 2"
Hole Ctr-to-Ctr Min 2"
Hole Ctr-to-Ctr Max 2"
Width of Inner Ring 1.22"

Material

Bearings Material AISI 52100 Steel
Housing Material PBT Thermoplastic

Performance

Temperature Range -30° to 110 °C

Properties

RoHS Compliant
REACH Compliant
Lubrication Required
Weight 0.6 lbs

What does UCTBL204-12MZ20W mean?

UCTBL204-12MZ20W is an AMI inch PBT thermoplastic tapped base pillow block unit with a wide inner ring insert and set screw locking, for a 3/4" (19.05 mm) shaft. The part number breaks down into 6 segments:

UC
Wide inner ring ball bearing insert, set screw locking, spherical outer ring. Insert part number is UC204-12MZ20
TBL
Housing style: PBT thermoplastic tapped base pillow block. Housing part number is TBL204
204
Frame size 204, 200 series (normal duty)
-12
Bore in sixteenths of an inch: 12/16" = 3/4" (19.05 mm)
MZ20
Kanigen (electroless nickel) protected insert bearing for corrosion resistance
W
Housing color: white

Note: For inch mounted bearings, the number after the dash is the bore in sixteenths of an inch. For example, -8 is 1/2", -12 is 3/4" and -16 is 1".

Note: Part of AMI's Choice corrosion-resistant series.

Frequently asked questions

What does UCTBL204-12MZ20W mean?

UCTBL204-12MZ20W is an AMI inch PBT thermoplastic tapped base pillow block unit with a wide inner ring insert and set screw locking, for a 3/4" (19.05 mm) shaft. UC = wide inner ring ball bearing insert, set screw locking, spherical outer ring. Insert part number is UC204-12MZ20, TBL = housing style: PBT thermoplastic tapped base pillow block. Housing part number is TBL204, 204 = frame size 204, 200 series (normal duty), -12 = bore in sixteenths of an inch: 12/16" = 3/4" (19.05 mm), MZ20 = kanigen (electroless nickel) protected insert bearing for corrosion resistance, W = housing color: white.

What is the bore size of UCTBL204-12MZ20W?

The bore of UCTBL204-12MZ20W is 3/4" (19.05 mm).

The housing of pillow block bearing, crafted from plastic, is engineered to withstand moisture-rich and chemically aggressive conditions with the lightweight corrosion resistance and rust-free durability needed to keep the overall mounted bearing assembly performing reliably over the long term.
Shaft retention is achieved through set screw locking in this pillow block bearing unit, which secures the shaft reliably against moderate loads and low-to-medium vibration — provided the shaft is of standard ground finish and the screws are correctly torqued — without damaging the shaft surface.

Why choose Plastic for the bearing housing?

Because this pillow block bearing is specifically designed for moist, corrosive, or chemically aggressive conditions, plastic delivers lightweight corrosion resistance and zero rust where standard metal housings are prone to oxidation and surface degradation, making it a purpose-built choice for this application rather than a generic substitute.

Why does this bearing use Set Screw Locking to secure the shaft?

Set screw locking works by tightening one or two hardened screws directly against the shaft surface, which makes it well suited to applications where shaft positioning is fixed and loads are moderate. Its main advantage over other shaft locking methods is simplicity and low cost, which matters most when quick installation and minimal tooling are the priority.

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