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SEALMASTER 4 Bolt Flange Bearing: Tapered Roller, 3 in Bore, Cast Iron - Flange-Mount Tapered Roller Bearings
SEALMASTERFlange-Mount Tapered Roller Bearings

SEALMASTER 4 Bolt Flange Bearing: Tapered Roller, 3 in Bore, Cast Iron

The SEALMASTER 4 Bolt Flange Bearing is a flange-mount tapered roller bearing with a 3 in cylindrical bore, cast iron housing, and set screw locking. It features a mounting bolt size of 3/4 in and is lubricated with…

SKU 3G-OTH-100006

Brand
SEALMASTER
Item
4 Bolt Flange Bearing: Tapered Roller, 3 in Bore, Cast Iron
Category
Flange-Mount Tapered Roller Bearings
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Technical Specifications

SEALMASTER
Manufacturer Part Number
RFB 300
Type
Cast Iron, Set Screws
Bore
3 in
Lg
7 3/4 in
Bore Type
Cylindrical
Lubricant Material
NLGI #2 Equivalent
Mounting Bolt Size
3/4 in
System of Measurement
Inch
View Full Spec Sheet

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SEALMASTER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SEALMASTER 4 Bolt Flange Bearing is a flange-mount tapered roller bearing with a 3 in cylindrical bore, cast iron housing, and set screw locking. It features a mounting bolt size of 3/4 in and is lubricated with NLGI #2 Equivalent grease. This inch-system bearing is identified by manufacturer part number RFB 300.

Frequently Asked Questions

What is the SEALMASTER 4 Bolt Flange Bearing used for?

The SEALMASTER 4 Bolt Flange Bearing is used in industrial conveyor systems, material handling equipment, and agricultural machinery where heavy radial and thrust loads occur. Its tapered roller design and cast iron housing provide durability in demanding applications.

What are the specifications of the SEALMASTER RFB 300 bearing?

The SEALMASTER RFB 300 is a 4 bolt flange bearing with a 3 in cylindrical bore, cast iron housing, and set screw locking. It has a 7 3/4 in length, 3/4 in mounting bolt size, and is lubricated with NLGI #2 Equivalent grease. It uses the inch system of measurement.

Where to buy SEALMASTER RFB 300 worldwide?

You can source the SEALMASTER RFB 300 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install a SEALMASTER 4 Bolt Flange Bearing?

To install, first clean the shaft and bore. Slide the bearing onto the shaft, align the flange bolt holes with the mounting surface, and tighten the set screws evenly to the manufacturer's torque specification. Ensure the housing is securely bolted using 3/4 in bolts. Lubricate per NLGI #2 guidelines.

Used in

Common applications for SEALMASTER
Conveyor systems — SEALMASTER NP series pillow block bearings for belt conveyor idler shafts
Material handling fans — SEALMASTER SFT series flange bearings for fan housing mounting
Pump drives — SEALMASTER MP series medium-duty pillow blocks for pump shaft support
Agricultural equipment — SEALMASTER ER series insert bearings in auger and elevator assemblies
Packaging machinery — SEALMASTER NPL low-base pillow blocks for compact conveyor sections
Industrial blowers — SEALMASTER SFT-23 flange bearing for blower shaft end support

SEALMASTER Products

3G Electric supplies SEALMASTER flange-mount tapered roller bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SEALMASTER 4 Bolt Flange Bearing: Tapered Roller, 4 15/16 in Bore, Cast Iron, Set Screws, Circular (MPN RFP 415). Key specifications — Bore Type: Cylindrical; Brand: SEALMASTER; Lubricant Material: NLGI #2 Equivalent; Mounting Bolt Size: 7/8 in; System of Measurement: Inch.
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SEALMASTER 4 Bolt Flange Bearing: Tapered Roller, 1 1/2 in Bore, Cast Iron, Set Screws, 5 3/8 in Lg (MPN RFB 108). Key specifications — Bore Type: Cylindrical; Brand: SEALMASTER; Lubricant Material: NLGI #2 Equivalent; Mounting Bolt Size: 1/2 in; System of Measurement: Inch.
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SEALMASTER 4 Bolt Flange Bearing: Tapered Roller, 1 3/8 in Bore, Cast Iron, Set Screws, 4 5/8 in Lg (MPN RFB 106). Key specifications — Bore Type: Cylindrical; Brand: SEALMASTER; Lubricant Material: NLGI #2 Equivalent; Mounting Bolt Size: 1/2 in; System of Measurement: Inch.