3-Bolt Flange Mounted Bearings
Last Updated: April 1, 2025
Description
3-Bolt Flange Mounted Bearings are designed to support a rotating shaft and are mounted using three bolts. These bearings are typically used to hold an insert bearing in position, ensuring stability and alignment during operation. The offset hole pattern from the bearing centerline is a distinctive feature of these bearings, which helps in accommodating specific mounting requirements.
Working Principle
3-Bolt Flange Mounted Bearings operate by providing a stable and secure housing for a rotating shaft. The offset hole pattern allows for a unique mounting configuration that can accommodate minor misalignments between the shaft and the bearing. This is particularly useful in applications where precise alignment is challenging. The bearings can be self-aligning, which means they can adjust to slight misalignments, reducing stress on the bearing and extending its operational life.
Applications
These bearings are commonly used in applications where there is a need for secure and stable mounting of a rotating shaft. Specific examples include conveyor systems, where the bearings support the rollers, and in machinery where precise alignment is difficult to achieve. The unique 3-bolt configuration makes them suitable for applications with limited space or where traditional 4-bolt configurations are not feasible.
Advantages over other Flange Mounted Bearings
One of the main advantages of 3-Bolt Flange Mounted Bearings is their ability to accommodate minor misalignments due to their self-aligning capabilities. This feature reduces the need for precise alignment during installation, saving time and reducing potential errors. Additionally, the offset hole pattern allows for more flexible mounting options compared to traditional 4-bolt configurations, making them ideal for applications with space constraints.
Limitations
A limitation of 3-Bolt Flange Mounted Bearings is that they may not provide the same level of stability as 4-bolt configurations in applications with high loads or significant vibrations. The reduced number of mounting points can lead to increased stress on each bolt, potentially affecting the bearing's performance and lifespan in demanding conditions.
Considerations
When selecting 3-Bolt Flange Mounted Bearings, it is important to consider the initial costs, which may be higher due to their specialized design. Operating expenses can be minimized by choosing bearings with self-aligning features, which reduce maintenance needs. Durability and accuracy are generally high, but the specific application requirements should be evaluated to ensure the bearing's suitability. Replacement and maintenance costs can be influenced by the ease of access and the bearing's ability to accommodate misalignments, which can reduce wear and tear over time.
from RS Components, Ltd.
SKF F2BC 30M-CPSS-DFH Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.18
- Design Units: Metric
- Flange Width: 2.41
from RS Components, Ltd.
SKF F2BC 30M-TPSS Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.18
- Design Units: Metric
- Flange Width: 1.66
from RS Components, Ltd.
SKF F2BC 35M-CPSS-DFH Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.38
- Design Units: Metric
- Flange Width: 2.54
from RS Components, Ltd.
SKF F2BC 35M-TPSS Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.38
- Design Units: Metric
- Flange Width: 1.83
from RS Components, Ltd.
SKF F2BC 40M-TPSS Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.57
- Design Units: Metric
- Flange Width: 2.04
from RS Components, Ltd.
SKF F3BBC 20M-CPSS-DFH [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.7874
- Design Units: Metric
- Flange Width: 2.13
from RS Components, Ltd.
SKF FNL 511 B Flange Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 1.97
- Design Units: Metric
- Flange Width: 3.23
from RS Components, Ltd.
SKF FY 60 TR Flange Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 2.36
- Design Units: Metric
- Flange Width: 2.9
from RS Components, Ltd.
SKF FY 65 TF Flange Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 2.56
- Design Units: Metric
- Flange Width: 2.9
from RS Components, Ltd.
INA PCFTR25-XL Flange Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.9843
- Design Units: Metric
from RS Components, Ltd.
SKF PF 20 TF Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.7874
- Design Units: Metric
- Flange Width: 0.6299
from RS Components, Ltd.
NSK-RHP SLFE20 Bearing Unit [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.7874
- Design Units: Metric
- Flange Width: 3.56
from RS Components, Ltd.
NSK-RHP SLFE25 R [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.9843
- Design Units: Metric
- Flange Width: 3.75
from RegalRexnord
3/4" Mounted Ball Bearing, Standard Duty, Cast Iron 3-Bolt Flange Bracket Block, Centrik-Lok CL Locking Device, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.7500
from Boston Gear
Overview. Boston Gear's comprehensive selection of flanged bearings includes non-metallic inserts in a non-metallic base for washdown service, spherical bearings with extended inner races featuring setscrews, or eccentric locking collars in stamped steel, ductile iron, or cast iron housings. [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.5000 to 1.44
- Bearing Type: Ball
- Housing: Cast Iron
from Triangle Manufacturing Company
Center flange mounted bearings are more affordable than side flange mount units and stronger because the load is centered over the flange. Engineered with three bolts and for use with our reservoir bearings, our center flange mountings offer precision bores, oil cups or grease fittings, and can be... [See More]
- Mtg Configuration: 3-Bolt
- Bearing / Housing Features: Spherical or Self-aligning bearing.
- Bearing Type: Plain
- Design Units: Inch
from Reid Supply
Mounted bearings and housings with rolling bearings support a rotating shaft, which can be bolted on a machine frame or any other substurcture. There is no need to precisely machine a bearing housing in a surrounding casing. This makes these solutions cost-efficient and easy to use, while providing... [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.5000
from Bunting Bearings, LLC
The unique, patented Lube-Align bearing products are made of self-lubricating, self-aligning SAE 841 bronze bearings permanently cast inside a 'fast mount' aluminum housing. Here's how Lube-Align bearings effect 4-way savings for OEM and maintenance engineers: Self-Alignment. A special casting... [See More]
- Mtg Configuration: 3-Bolt; 3 Bolt Flange Mount
- Design Units: Inch
- Bearing Type: Plain
- Shaft Size: 0.1250 to 2
from Emerson Bearing Co.
Standard duty with set screw lock. Available with: Set screw or eccentric locking collar. Corrosion resistant housing and bearing options include Cast iron, Stainless Steel, Thermoplastic, and Nickel plating. B-type seals or L3 triple lip seals available for extra sealing needs. Wide inner race... [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing / Housing Features: Offset Hole Pattern
- Shaft Size: 0.6250
from RegalRexnord
7/8" Mounted Ball Bearing, Standard Duty, Cast Iron 3-Bolt Flange Bracket Block, Centrik-Lok CL Locking Device, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.8750
from Triangle Manufacturing Company
Mid flange mounted bearings are used for many applications. Our GA series is the same as the GB series except that the mounting does not include a back plate. This is provided by the customer, punching and forming this mounting surface to the proper dimensions to act as a back plate. This saves the... [See More]
- Mtg Configuration: 3-Bolt
- Bearing / Housing Features: Spherical or Self-aligning bearing.
- Bearing Type: Plain
- Design Units: Inch
from Reid Supply
Mounted bearings and housings with rolling bearings support a rotating shaft, which can be bolted on a machine frame or any other substurcture. There is no need to precisely machine a bearing housing in a surrounding casing. This makes these solutions cost-efficient and easy to use, while providing... [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.5000
from Emerson Bearing Co.
Available with: Set screw or eccentric locking collar. Corrosion resistant housing and bearing options include Ductile iron, Stainless Steel, Thermoplastic and Nickel plating. K-type seals or L3 triple lip seals available for extra sealing needs. Narrow inner race bearing. [See More]
- Mtg Configuration: 3-Bolt
- Shaft Size: 0.7500
- Design Units: Inch
- Flange Length / Diameter: 3.56
from RegalRexnord
3/4" Mounted Ball Bearing, Intermediate Duty, Cast Iron 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.7500
from RegalRexnord
3/4" Mounted Ball Bearing, Intermediate Duty, Cast Iron 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal, Nickel Plated Housing, Food Grade Grease [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.7500
from RegalRexnord
1" Mounted Ball Bearing, Intermediate Duty, Cast Iron 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1
from RegalRexnord
1 7/16" Mounted Ball Bearing, Intermediate Duty, Cast Iron 3-Bolt Bracket Flange Block, Eccentric Cam Locking Collar, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Housing: Cast Iron
- Bearing Type: Ball
- Shaft Securing: Locking Collar
from RegalRexnord
1 3/8" Mounted Ball Bearing, Intermediate Duty, High-Test Iron 3-Bolt Flange Block, Eccentric Cam Locking Collar, Single Lip Contact Seal, Non-relubricatable [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1.38
from RegalRexnord
15/16" Mounted Ball Bearing, Intermediate Duty, High-Test Iron 3-Bolt Flange Block, Eccentric Cam Locking Collar, Single Lip Contact Seal, Reverse Assembled, Relubricatable [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.9375
from RegalRexnord
1" Mounted Ball Bearing, Standard Duty, High-Test Iron 3-Bolt Flange Block, Setscrew Locking, Single Lip Contact Seal, Non-Relubricatable [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1
from RegalRexnord
7/8" Mounted Ball Bearing, Intermediate Duty, High-Test Iron 3-Bolt Round Flange Block, Eccentric Cam Locking Collar, Single Lip Contact Seal, Non-Relubricatable [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.8750
from RegalRexnord
7/8" Mounted Ball Bearing, Intermediate Duty, High-Test Iron 3-Bolt Round Flange Block, Eccentric Cam Locking Collar, Single Lip Contact Seal, Relubricatable [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.8750
from RegalRexnord
25 mm Mounted Ball Bearing, Intermediate Duty, Polyamide 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal, Closed End Cap, no rear seal, Preservative Only [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Metric
- Bearing Type: Ball
- Shaft Size: 0.9843
from RegalRexnord
1" Mounted Ball Bearing, Intermediate Duty, Polyamide 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal, Stainless Steel Insert [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1
from RegalRexnord
1" Mounted Ball Bearing, Intermediate Duty, Polypropylene 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1
from RegalRexnord
Product Family: Ball Bearing; Line: Link-Belt Mounted [See More]
- Mtg Configuration: 3-Bolt
- Flange Length / Diameter: 1.34
- Bearing Type: Ball
- Flange Width: 0.5512
from RegalRexnord
1" Mounted Ball Bearing, Intermediate Duty, Polypropylene 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal, Stainless Steel Insert [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 1
from RegalRexnord
3/4" Mounted Ball Bearing, Intermediate Duty, Cast Iron 3-Bolt Bracket Flange Block, Setscrew Locking, Single Lip Contact Seal, Nylon Coated Housing [See More]
- Mtg Configuration: 3-Bolt
- Design Units: Inch
- Bearing Type: Ball
- Shaft Size: 0.7500