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NTN 4 Bolt Flange Bearing: Radial Ball, 2 1/4 in Bore, Cast Iron, Set Screws - General Purpose Flange-Mount Ball Bearings
NTNGeneral Purpose Flange-Mount Ball Bearings

NTN 4 Bolt Flange Bearing: Radial Ball, 2 1/4 in Bore, Cast Iron, Set Screws

The NTN 4 Bolt Flange Bearing is a general purpose flange-mount ball bearing with a 2 1/4 in cylindrical bore, cast iron housing, and set screw locking. It features an NLGI #3 equivalent lubricant, a 5/8 in mounting…

SKU 3G-OTH-120931

Brand
NTN
Item
4 Bolt Flange Bearing: Radial Ball, 2 1/4 in Bore, Cast Iron, Set Screws
Category
General Purpose Flange-Mount Ball Bearings
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Technical Specifications

NTN
Manufacturer Part Number
UCFUX-2.1/4M
Type
Cast Iron, Set Screws, Square
Bore
2 1/4 in
Lg
6 7/8 in
Bore Type
Cylindrical
Lubricant Material
NLGI #3 Equivalent
Mounting Bolt Size
5/8 in
System of Measurement
Inch
View Full Spec Sheet

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NTN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NTN 4 Bolt Flange Bearing is a general purpose flange-mount ball bearing with a 2 1/4 in cylindrical bore, cast iron housing, and set screw locking. It features an NLGI #3 equivalent lubricant, a 5/8 in mounting bolt size, and a 6 7/8 in length in a square configuration. This inch-system unit is identified by manufacturer part number UCFUX-2.1/4M.

Frequently Asked Questions

What is the NTN 4 Bolt Flange Bearing used for?

The NTN 4 Bolt Flange Bearing is used in industrial power transmission systems to support rotating shafts in conveyor lines, fans, and pumps. Its square cast iron housing with set screw locking provides secure mounting in tight spaces, making it suitable for general purpose machinery in manufacturing and material handling.

What are the specifications of the NTN UCFUX-2.1/4M flange bearing?

The NTN UCFUX-2.1/4M is a 4 bolt flange bearing with a 2 1/4 in cylindrical bore, cast iron housing, and set screw locking. It uses NLGI #3 equivalent lubricant, has a 5/8 in mounting bolt size, and measures 6 7/8 in length in a square configuration. It is an inch-system unit.

Where to buy NTN flange bearings in worldwide?

You can source the NTN UCFUX-2.1/4M flange bearing through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this NTN part.

How to install the NTN 4 Bolt Flange Bearing?

To install the NTN 4 Bolt Flange Bearing, align the square housing with the mounting surface and secure using 5/8 in bolts. Tighten the set screws onto the shaft to lock the bearing in place. Ensure the shaft is clean and lubricated per NTN recommendations to prevent misalignment and extend service life.

Used in

Common applications for NTN
Automotive driveline — NTN tapered roller bearing assemblies (e.g., 4T-30303) for differential and wheel hub applications
Conveyor systems — NTN 4-bolt flange bearings (e.g., UCF211-200D1) for idler rollers and take-up units
Machine tool spindles — NTN duplex angular contact bearings (e.g., ML7006CVDUJ74S) for high-speed precision rotation
Industrial fans — NTN high-temperature radial ball bearings (e.g., 6004FT150) for oven and dryer exhaust systems
Pump drives — NTN radial ball bearings (e.g., 6008LLBC3/L627) for electric motor and pump shaft support
Agricultural equipment — NTN tapered roller bearing cones (e.g., LM29748L) for gearbox and PTO shaft assemblies

NTN Products

3G Electric supplies NTN general purpose flange-mount ball bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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