Ntn
NTN UCF212-207D1-8 4-Bolt Flange Bearing 2-7/16" Bore
A four-bolt cast-iron flange bearing with a 2-7/16" cylindrical bore, double-sealed radial ball insert and a 5 5/8" mounting pattern rated for 2,500 RPM from -40 to 250 °F
- TypeTarps
- Size5/8"
- Double-sealed closure protects against contaminants
- Cast iron housing delivers rigid mounting support
- Fixed expansion design maintains precise shaft alignment
- Wide -40 °F to 250 °F temperature range suits harsh environments
- 2 7/16 in bore fits standard shaft sizes
4-Bolt Flange Bearing for Industrial Mounting
The NTN UCF212-207D1-8 is a square housing unit with a 2-7/16 in cylindrical bore designed for fixed shaft support. It uses a radial ball insert made from alloy steel and a cast iron housing for rigid mounting on flat surfaces. The double-sealed closure helps retain lubricant and exclude contaminants in dirty environments. This bearing suits maintenance teams and OEMs replacing worn units on conveyors, fans or agricultural equipment.
Fits Standard Four-Bolt Patterns and Fixed Shafts
The housing provides a 5 5/8 in centre-to-centre bolt spacing and a 1.142 in back-side-to-centre width for direct replacement on existing frames. The fixed expansion type locks the shaft axially, so no separate locating collar is required. The UC212-207D1 insert is included and factory-lubricated with an NLGI #3 equivalent grease, reducing assembly time. Builders needing a floating or expansion-type unit should select a different housing style.
Rated for 2,500 RPM Across a Wide Temperature Range
The bearing operates continuously from -40 Degrees F to 250 Degrees F without relubrication intervals specified in the data. At the maximum 2,500 RPM speed rating the double seals and alloy steel balls maintain film strength under steady radial loads. Applications exceeding this speed or requiring frequent thermal cycling beyond the stated limits will need a different bearing solution.
Highlights
- Double-sealed closure protects against contaminants
- Cast iron housing delivers rigid mounting support
- Fixed expansion design maintains precise shaft alignment
- Wide -40 °F to 250 °F temperature range suits harsh environments
- 2 7/16 in bore fits standard shaft sizes
Specifications
| Brand | NTN |
|---|---|
| Type | Tarps |
| Size | 5/8" |
Questions about this item
What is the maximum continuous speed for the 2-7/16" bore bearing?
The bearing is rated for a maximum speed of 2,500 RPM under sustained operation.
What temperature range can the NTN UCF212-207D1-8 handle during all-day use?
It operates continuously between -40 degrees F and 250 degrees F with the factory NLGI #3 equivalent lubricant.
Which shaft diameter matches the cylindrical bore of this flange unit?
The unit fits a 2-7/16 inch diameter shaft with a cylindrical bore.
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