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Gray cast-iron square flange bearing, four bolt holes, sealed radial ball insert, 1-15/16 inch bore

Dayton

Dayton 3FCZ8 Flange Bearing 1-15/16" Bore 4-Bolt Ball

SKU CH-57BD-9SYNH

A 4-bolt flange bearing with a 1-15/16 inch bore and cast iron housing for radial ball applications

  • Precision radial ball insert for smooth rotation
  • 52100 chrome steel construction resists wear
  • Four-bolt cast iron housing secures firmly
  • Single-sealed closure blocks dust and dirt
  • Rated for 3,600 RPM with Chevron SRI 2 grease

Precision flange bearing for industrial shafts

The Dayton 3FCZ8 is a four-bolt square flange unit with a 1-15/16 inch cylindrical bore. It uses a WJB HC210-31 insert made from 52100 chrome steel and a cast-iron housing. The single-sealed, fixed-expansion design targets highly dusty and dirty environments. Buyers who need a different bore size or a split housing cannot use this unit.

Steady-speed operation up to 3, 600 RPM

Grease-lubricated with Chevron SRI 2, NLGI #2 equivalent, the bearing is rated for continuous running at the listed maximum speed. The alloy-steel insert and single seal resist contaminant ingress during prolonged duty. The fixed expansion type prevents axial float under sustained radial load. Applications requiring higher speeds or floating expansion must select another bearing.

Straightforward four-bolt mounting

The housing centre height is 2 13/16 inches and the back-to-centre width is 1.102 inches. Installers bolt the square flange to a prepared flat surface and secure the inner ring to the shaft. Misalignment or an uneven mounting face can reduce seal life and cause premature wear. Shops without alignment tools or torque specs should verify procedures before fitting.

Highlights

  • Precision radial ball insert for smooth rotation
  • 52100 chrome steel construction resists wear
  • Four-bolt cast iron housing secures firmly
  • Single-sealed closure blocks dust and dirt
  • Rated for 3,600 RPM with Chevron SRI 2 grease

Specifications

No published specifications for this item yet.

Questions about this item

How much heat and noise does the 3600 RPM bearing generate during continuous operation?

The fixed housing and single-sealed insert limit grease churn at 3600 RPM, so running temperature stays moderate and audible noise is low in typical dusty environments.

What shaft size and mounting pattern must I already have for the 1-15/16" bore flange?

You need a cylindrical shaft measuring 1-15/16 inches and a square four-bolt pattern with 2-13/16 inch center height and 1.102 inch back-to-center width.

Will the WJB HC210-31 insert fit the cast-iron housing I already use?

The HC210-31 insert is included and factory-seated in the cast-iron square housing, so no separate housing swap is required.

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