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Sealmaster RFB 307
Sealmaster Mounted Cast Iron Four Bolt Flange Tapered Roller - 52100 Bearing Steel - Double Collar Mount Lock - RFB 307
Series
RFB
Housing Base
Solid
Expansion
Non-Expansion Bearing (Fixed)
Seal Type
Felt Labyrinth Seal
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Heavy duty tapered roller bearings with steel cage for radial, thrust and combined loading
- Race-mounted felt-lined flinger seal
- Double-collar interlock with 120° spacing setscrew lock, diamond faceted setscrews
- Powder coat epoxy split cast iron housing
| Part Number | 550263 |
| Brand | Sealmaster |
| Housing Base | Solid |
| Expansion | Non-Expansion Bearing (Fixed) |
| Seal Type | Felt Labyrinth Seal |
| Speed (Max) | 1500 |
| Housing Material | Cast Iron |
| Insert Material | 52100 Bearing Steel |
| Housing Type | Flange, Four Bolt |
| Bore Shape | Straight |
| Measure Units | Inch |
| Rolling Element | Tapered Roller |
| Housing Width (in) | 9.25 |
| Overall Length (in) | 9.25 |
| Bolt Center-to-Center Length (in) | 7 |
| Bolt Center Diameter (in) | 9.9063 |
| Overall Width (in) | 5.25 |
| Bolt Size (in) | 0.75 |
| Pilot Configuration | No Pilot |
| Locking Type | Double Collar Mount |
| Internal Clearance | Standard |
| Overall Height (in) | 5.25 |
| Misalignment | ±3.0° Misalignment - Static Only |
| Housing Construction | Split Two Piece |
| Misalignment Type | Static Only |
| Bearing Insert Coating | Uncoated |
| Housing Color | Gray |
| Outer Ring Land Profile | Standard |
| Platform | RPB Series |
| Bore Size - Inch | 3.4375 |
| Replaceable Insert | Yes |
| Retainer Material | Steel |
| End Cap | No |
| Centerline to Front Face (in) | 2.5 |
| Foot Height (in) | 1.875 |
| Inner Race Length (in) | 5 |
| Series | RFB |
| Grease Fitting Thread Size | 1/8 NPT |
| Maximum Operating Temperature (F) | 220 |
| Inner Race Heat Treat Method | Case Carburized Inner Ring |
| Housing Style | Flange Block |
| Collar Outer Diameter (in) | 5.5 |
| Insert Number | RCI-307 |
| Duty/Series | Standard |
| Ability to Relubricate | Yes |
| Lubrication Type | Lithium; EP; NLGI#2 |
Always verify dimensions, load ratings, material, and seal type before ordering.
| Brandi | Sealmaster |
| Mfg. Catalog Numberi | RFB 307 |
| Mfg. Part Numberi | 550263 |
| GDS #i | GDS-113964 |
| Categoryi | Bearings / Mounted / Mounted Tapered Roller Bearings / Flange Units / Square Flange |
| UPCi | 662288480372 |
