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 and a cast iron housing. It features set screws for shaft locking and uses NLGI #3 equivalent lubricant…
SKU 3G-OTH-108844
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Product Description
The NTN 4 Bolt Flange Bearing is a general purpose flange-mount ball bearing with a 2 1/4 in cylindrical bore and a cast iron housing. It features set screws for shaft locking and uses NLGI #3 equivalent lubricant. This inch-system unit has a 5/8 in mounting bolt size and a 6 7/8 in length, with the square-flange design identified by MPN UCFU-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 conveyors, fans, and material handling equipment. Its square cast iron housing with set screws locks the shaft securely, making it suitable for moderate-load applications where radial and axial loads are present.
What are the specifications of the NTN UCFU-2.1/4M flange bearing?
The NTN UCFU-2.1/4M is a 4 bolt flange bearing with a 2 1/4 in cylindrical bore, cast iron housing, and set screw shaft locking. It uses NLGI #3 equivalent lubricant, has a 5/8 in mounting bolt size, and a 6 7/8 in length. This inch-system unit is designed for general purpose use.
Where to buy the NTN 4 Bolt Flange Bearing worldwide?
You can source the NTN 4 Bolt Flange Bearing worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this NTN UCFU-2.1/4M bearing.
How to install the NTN flange bearing with set screws?
To install the NTN flange bearing, first clean the shaft and housing bore. Slide the bearing onto the shaft, align the flange bolt holes, and tighten the mounting bolts to the recommended torque. Then secure the shaft by tightening the set screws evenly against the shaft. Use NLGI #3 equivalent grease for relubrication.
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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.














