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Gray cast iron four bolt flange bearing with alloy steel ball insert

Timken

Timken RCJ 1 1/2 Flange Bearing 4-Bolt Ball 1-1/2" Bore Collectible

SKU CH-55JA-K57XH

A new Timken RCJ 1 1/2 flange bearing with a 4-bolt square cast-iron housing, a 1-1/2 inch cylindrical bore, double-sealed radial ball insert and NLGI #2 equivalent lubrication.

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorGray
  • Genuine Timken quality ensures reliable operation
  • Double-sealed closure keeps contaminants out for longer life
  • Cast-iron housing provides rigid support in demanding settings
  • Fixed expansion design maintains precise shaft alignment
  • NLGI #2 equivalent grease factory-filled for immediate installation

A 4-Bolt Flange Bearing for Collectors

This Timken RCJ unit is listed as new-old-stock sports memorabilia rather than an industrial component. It suits collectors who want a vintage power-transmission piece bearing the Timken name. Buyers seeking a functional bearing for active machinery should look elsewhere.

Sealed Alloy-Steel Insert in Cast Iron

The radial ball insert is double sealed and factory filled with NLGI #2 equivalent grease. Operating limits run from -65 to 200 degrees F with a maximum speed of 4 600 RPM. The fixed expansion type and grey cast-iron housing keep the assembly rigid in display or light-duty use.

Mounting Pattern and Included Insert

Four bolt holes on a 4 in centre-to-centre square match the G1108KRRB insert supplied in the box. Back-side-to-centre width measures .961 in and the cylindrical bore accepts a 1 1/2 in shaft. No additional hardware or lubrication tools are bundled.

Highlights

  • Genuine Timken quality ensures reliable operation
  • Double-sealed closure keeps contaminants out for longer life
  • Cast-iron housing provides rigid support in demanding settings
  • Fixed expansion design maintains precise shaft alignment
  • NLGI #2 equivalent grease factory-filled for immediate installation

Specifications

BrandTIMKEN
TypeBearings, V-belts & Power Transmission Equipment
ColorGray

Questions about this item

How do I mount the Timken RCJ 1 1/2 flange bearing and what is the common alignment mistake?

Bolt the square cast-iron housing through its four holes on a 4 in center-to-center pattern; the step most people miss is shimming the mounting surface so the 1-1/2 in cylindrical bore stays perfectly perpendicular to the shaft.

What maintenance will this double-sealed bearing need later?

The NLGI #2 equivalent grease is factory-filled and the double seals are non-replenishable, so no relubrication is possible — when the seals wear or the alloy-steel balls show noise, replace the entire G1108KRRB insert.

What is the first limit reached under continuous high-speed operation?

The 4,600 RPM speed ceiling is reached well before the 200 °F temperature limit, so sustained running above that speed will cause premature wear even if the housing stays cool.

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