Definition & Components
A flange mounted bearing – also referred to as a flanged bearing unit or flange unit – is a type of mounted bearing consisting of a sealed bearing insert preassembled into a flanged housing. Flange mounted bearings are used when the shaft axis is perpendicular to the bearing mounting surface. The housing incorporates a precision-machined face that is perpendicular to the shaft axis and is available with two, three, or four mounting holes depending on the configuration.
The housing – commonly made of cast iron, die-cast zinc, pressed steel, or stainless steel – provides a rigid mounting interface that can be bolted directly to a machine wall, side plate, or frame. The bearing insert – typically a wide inner ring ball bearing with a self-aligning spherical outside diameter – compensates for shaft misalignment. Each unit is pre-lubricated and sealed, ready for immediate installation. The bearing can be unbolted and removed, making replacement easier and faster than traditional bearings that must be press-fit into a housing. Four-bolt configurations are commonly supplied with either round or square flanged housings.
Features & Advantages
- Space-efficient mounting – Flange units mount directly to vertical or inclined surfaces (machine sidewalls, bulkheads, end plates), eliminating the need for base-mounted support structures.
- Easy installation and replacement – Housings bolt directly onto mounting surfaces using 2, 3, or 4 bolts through the flange. The entire assembly can be removed and replaced as a single unit.
- Self-aligning capability – Wide inner ring ball bearings with self-aligning spherical outside diameters compensate for shaft misalignment, shaft deflection, and mounting inaccuracies.
- Pre-lubricated and sealed – Units are factory-filled with grease and equipped with multi-labyrinth or contact seals. Ready for immediate installation upon delivery.
- Versatile load support – Available with ball bearings, spherical roller bearings, cylindrical roller bearings, and tapered roller bearings to suit different load types and magnitudes.
Your Professional Pillow Block Bearing Manufacturer
DUHUI Bearing, established in 2003 in Zhejiang, China, is a professional flange mounted bearing supplier and manufacturer. With over 20 years of experience, we produce flange mounted bearings in six housing styles – F, FA, FB, FC, FL, and FS – supporting the full range of UC, UK, SA, SB, UE, and UEL insert series. Over 400 standard models are available. Our 10,000 m² facility produces 100,000 sets monthly, exporting to Europe, North and South America, and the Middle East.
What Is a Flange Mounted Bearing?
A flange mounted bearing is used when the shaft axis is perpendicular to the bearing mounting surface. The housing contains a sealed insert bearing preassembled into a flanged housing with a precision ground surface perpendicular to the bearing axis. The flange extends outward from the bearing axis with bolt holes for attachment to side walls, machine frames, or bulkheads. The bearing can be unbolted and removed, making replacement easier and faster than traditional bearings that must be press-fit into a housing. Flange mounted bearings can also support heavy loads, protecting the shaft from deflection that could cause vibration or other damage.
Housing Types – F, FA, FB, FC, FL, and FS
F (Standard Flange) – Four-bolt square flange. The most widely used type in flange bearing housings. Generally installed on the side wall of the machine with simple structure and convenient installation.
FA (Flange with Hanger) – Hanging flange housing design. Suitable for applications requiring suspension mounting configurations.
FB (Flange Bracket) – Three-bolt offset flange bracket. Designed for compact mounting in confined spaces where standard bolt patterns cannot be accommodated.
FC (Flanged Cartridge / Piloted Flange) – Features a pilot diameter or boss on the base surface that fits into a circular hole in the frame. This provides high installation accuracy and precise positioning.
FL (Diamond Flange) – Two-bolt diamond-shaped flange with a small footprint. Suitable for transmission parts with limited installation area. Can replace square seat F in space-constrained applications.
FS (Square Flange – High Height) – Four-bolt square flange with increased housing height. Used when additional clearance or specific shaft height is required above the mounting surface.
Materials and Manufacturing
Housings are cast from HT200 grey iron as standard. Ductile iron offers higher impact resistance for heavy-duty applications. Stainless steel housings are available for corrosive or wash-down environments. All insert bearings use GCR15 chrome steel (AISI 52100 equivalent) with precision-ground raceways. Heat treatment achieves HRC 60-64 hardness. DUHUI holds ISO 9001 and IATF 16949 certifications. Precision meets ABEC-1 (P0) with C3 and C4 internal clearances available as options.
Sealing and Pre-lubrication
Effective sealing is critical for bearing life in contaminated environments. DUHUI offers sealing options ranging from single-lip to triple-lip, all with full metal shrouds. Units arrive pre-lubricated with lithium-based grease and are ready for immediate installation – no disassembly required. This reduces installation time and eliminates the risk of improper lubrication.
Supply Capability and Customization
Standard orders ship within 15 to 45 days. Custom prototypes deliver within 30 days. A 2-year or 50,000-km warranty covers standard products. Technical support is available for selection, installation, and troubleshooting. OEM and private-label orders are welcome. Custom housings, non-standard bores, and special coatings can be developed per customer drawings.
Applications
Flange mounted bearings serve agricultural machinery, material handling equipment, mining machinery, packaging lines, fan assemblies, pump applications, and industrial transmissions. Common uses include side-wall mounted conveyor rollers, vertical shaft supports, and equipment where horizontal base mounting is not feasible.
DUHUI Bearing – your professional flange mounted bearing supplier since 2003.
Product Types
Flange mounted bearings are classified by housing configuration. The primary flange housing types are F (square 4-bolt), FA (adjustable rhombic / hanging), FB (3-bolt bracket), FC (boss circular / piloted cartridge), FL (diamond 3-bolt), and FS (boss square). Each type is designed for specific mounting requirements, space constraints, and load conditions. The tables below present the housing type classifications and the corresponding complete unit codes cross-referenced by insert series.
- Housing Types
- Series Cross-Reference
Housing Types
Each flange housing type is designated by a suffix letter in the complete unit code. The suffix indicates the housing configuration, bolt pattern, and mounting style. The descriptions below provide detailed specifications for each housing variant.
Flange – F (Square Flange, 4-Bolt) – Square-shaped flange housing with four mounting bolts. Installed on vertical or inclined surfaces perpendicular to the shaft axis. The square flange design provides balanced load distribution across four mounting points, offering the most rigid and secure mounting. Suitable for higher loads, high vibration applications, and end-of-shaft support. Standard cast iron construction with optional ductile iron and stainless steel variants.
Flange – FA (Adjustable Rhombic Flange / Hanging Housing) – Adjustable rhombic flanged type unit with elongated bolt holes for positional adjustment. Also referred to as hanging housing type. The elongated mounting slots permit fine adjustment during installation, accommodating minor alignment variations without compromising shaft position. Suitable for applications requiring precise shaft positioning within the housing.
Flange – FB (3-Bolt Bracket Flange / Suspended Housing) – Three-bolt bracket flanged housing. Suitable for applications requiring three-point mounting. The triangular bolt pattern provides stability while using fewer mounting points than square flanges. Commonly specified for lighter-duty applications and where installation space dictates a three-bolt configuration.
Flange – FC (Boss Circular Flange / Piloted Cartridge) – Circular flange housing with a boss (piloted) design. Also referred to as piloted round flanged mounted bearing. The boss design provides enhanced concentricity and alignment capability through a machined centering shoulder that fits into a precise bulkhead opening. The piloted cartridge configuration facilitates precise insertion into mating components, ensuring consistent shaft-to-bore alignment.
Flange – FL (Diamond Flange, 3-Bolt) – Diamond/rhombic-shaped flange housing with three mounting bolts. Also known as oval flange bearing unit. Ideal for applications with limited installation space where a smaller housing footprint is required. The diamond shape allows installation in corners or on narrow mounting surfaces. Commonly used in compact machinery and space-constrained assemblies. Available in 200 series (standard duty) and 300 series (heavy duty).
Flange – FS (Boss Square Flange) – Square flange housing with a boss (convex) design. Also referred to as convex square seat. The raised boss section provides additional support and alignment capability, enhancing the stability of the shaft connection. Suitable for applications requiring the compactness of a square flange with the alignment benefits of a boss design.
Series Cross-Reference
Complete flange mounted unit codes combine the insert series designation with the housing suffix. The insert series indicates the locking mechanism and duty rating. The table below cross-references each insert series (UC, UK, SA, SB, UE, UEL) with each flange housing type to show the complete unit code.
200 Series (Standard Duty) – Standard load capacity flange mounted bearings for general industrial applications including conveyors, fans, and agricultural equipment. Suitable for moderate loads and speeds. Available across all housing types and insert series. The “2” in the bore size code (e.g., UCF210) indicates 200 series construction with standard section dimensions and standard radial internal clearance.
300 Series (Heavy Duty) – Enhanced load capacity and robust construction flange mounted bearings for demanding applications with higher loads, vibration, and reversing conditions. Suitable for heavy industrial and mining applications. Available across all housing types and insert series. The “3” in the bore size code (e.g., UCF310) indicates 300 series construction with heavier section dimensions and enhanced radial internal clearance for thermal expansion accommodation.
| Housing Type | UC | UK | SA | SB | UE | UEL |
| Flange – F | UCF | UKF | SAF | SBF | UEF | UELF |
| Flange – FA | UCFA | UKFA | SAFA | — | — | — |
| Flange – FB | UCFB | UKFB | — | — | — | UELFB |
| Flange – FC | UCFC | UKFC | — | — | — | UELFC |
| Flange – FL | UCFL | UKFL | SAFL | SBFL | UEFL | UELFL |
| Flange – FS | UCFS | UKFS | — | — | — | UELFS |
Other Related Bearing Types
The following bearing types are commonly used in automotive driveline and wheel-end applications. Although they are not flange mounted bearings in the strict sense, they are often referenced alongside them in product portfolios.
Wheel Bearings (Gen 1 Press-in) – Single-row or double-row ball or tapered roller bearings pressed directly into the steering knuckle or hub. No integrated flange; the hub and bearing are separate components. Used in many passenger car rear axles and some front axles.
Wheel Hub Bearings (Gen 2 / Gen 3 Bolt-on) – Pre-assembled units that integrate the bearing, hub flange, and (in Gen 3) an ABS sensor ring. Bolted directly to the steering knuckle, reducing assembly complexity and improving stiffness. Common in modern FWD and SUV applications.
Clutch Release Bearings – Axial-load bearings (also called throw-out bearings) that actuate the clutch diaphragm spring in manual transmissions. Designed for high axial thrust and rapid engagement cycles.
Center Support Bearings – Bearings that support the centre of a two-piece driveshaft in rear-wheel-drive and truck applications. Accommodate shaft misalignment and dampen driveline vibrations.
Industry Applications
Flange mounted bearings are specified across a broad range of industries. The following lists key sectors and typical equipment where these products are installed.
Automotive – Engine components such as belt drives and alternators; suspension systems supporting dynamic shafts; assembly line conveyors and powertrain test rigs where space constraints require compact face-mounted solutions.
Agricultural Machinery – Combine harvesters, balers, tillage equipment, sprayers, plows, and seeders. Demanding environments require enhanced sealing and corrosion-resistant housings.
Material Handling & Conveyors – Belt conveyors, roller conveyors, bucket elevators, and palletisers. Flange units are ideal when space on the machine base is limited and sidewall mounting is required.
Food Processing – Stainless-steel housings and food-grade lubricants are used in wash-down areas. Flange units can reduce footprint and eliminate extra support brackets in hygienic environments.
Mining & Aggregate – Crushers, screens, and heavy-duty conveyors. Ductile-iron housings and robust sealing handle high loads and abrasive contaminants.
Pumps & Fans – Industrial pumps, HVAC fans, and blowers. Flange mounted bearings ensure proper shaft alignment when the shaft passes through a wall or frame perpendicular to the mounting surface.
Product Comparison
The following internal article compares flange mounted bearings with pillow block bearings, helping engineers choose based on mounting surface, space constraints, and application conditions.
Flange mounted bearings attach to vertical or inclined surfaces using flange bolt patterns, supporting shafts perpendicular to the mounting surface. Pillow block bearings mount on flat horizontal surfaces with base bolt holes, supporting shafts parallel to the mounting surface. Flange units are ideal for space-constrained installations, end-of-shaft support, sidewall mounting, and compact assemblies; pillow blocks suit applications with flat mounting bases and horizontal shafts. This article details mounting orientation, load direction, and application examples for each type.
For more details, please read“Pillow Block Bearings vs Flange Mounted Bearings”
Related Products
The following flange mounted bearings represent commonly specified models across industrial applications. Complete unit codes combine housing type with insert series. For specific dimensional, load, and sealing requirements, refer to the product data sheet of each model.
Flange Mounted Bearings – 2-Bolt, 3-Bolt, or 4-Bolt? How to Choose
Ever stared at a flange bearing specification sheet and wondered: two bolts, three bolts, or four? Pick the wrong one and you are looking at housing cracks, bolt loosening, or premature failure within months.
Flange mounted bearings solve a specific problem: supporting a shaft that runs perpendicular to your mounting surface. Unlike pillow blocks that sit on a flat base, flange units bolt directly to a wall, plate, or frame side. They are compact, space-efficient, and ready to mount out of the box.
This guide breaks down the differences between 2-bolt, 3-bolt, and 4-bolt flange bearings. You will learn which configuration fits your load, your space, and your operating environment.
What Are Flange Mounted Bearings?
A flange mounted bearing is a complete assembly that combines a bearing insert with a flanged housing. The housing has a lip or rim – the flange – with mounting holes that allow you to bolt the unit directly onto a surface. The shaft axis runs perpendicular to that mounting surface.
Unlike standard bearings that must be pressed into a housing bore, flange mounted bearings are pre-assembled and pre-lubricated. You just bolt them on, slide the shaft in, lock it, and you are done.
The bearing insert is typically a wide inner ring ball bearing with a spherical outside diameter. This provides self-aligning capability – the insert can pivot slightly to compensate for minor shaft misalignment or deflection.
Flange mounted bearings are used when a shaft axis is perpendicular to the bearing mounting surface. They are available in 2, 3, or 4-hole configurations.
Housing Configurations: 2-Bolt, 3-Bolt, and 4-Bolt
The number of bolts is not just about how many fasteners you need. It determines load capacity, vibration resistance, and how the bearing handles moment loads.
2-Bolt Flange Bearings (UCFL Series / Oval)
These feature a diamond-shaped or oval flange with two mounting holes. A line drawn through the axis of the mounting holes runs straight through the bearing center.
When to choose 2-bolt: You have limited space (less than 50mm width) and loads under 3kN. They are ideal for narrow machinery frames, compact conveyor frameworks, and tight modular equipment layouts.
Critical risk: Avoid 2-bolt units in high-vibration or heavy axial thrust applications. Under excessive moment loads, the typical failure is housing ear cracking or bolt loosening.
One food processing conveyor using a UCFL204 (20mm bore) failed at 2,200 hours under cyclic loading. The same application with a 4-bolt UCF204 ran over 14,000 hours with zero failures.
3-Bolt Flange Bearings (UCFB Series / Round)
Three-bolt flanges have mounting holes arranged radially at 120 degrees around the bearing axis, or on a triangular flange offset from the axis.
When to choose 3-bolt: You need vertical mounting or three-point stability. The triangular shape offers a sturdier mount and better load distribution than 2-bolt designs. Suitable for applications requiring three-point mounting.
4-Bolt Flange Bearings (UCF Series / Square, UCFC Series / Round Piloted)
Four-bolt flanges have mounting holes located radially around the bearing axis. They typically have round or square housings.
When to choose 4-bolt: Loads exceed 5kN or you have high vibration. This is the industrial standard for maximum structural rigidity and vibration resistance. The symmetrical design ensures excellent load stability. Square flanged units provide the most rigid and secure mounting. UCFC series feature a machined centering shoulder (boss) that fits into a precise bulkhead opening for accurate centering.
Critical risk: Base flatness is vital. A deviation of even 0.1mm can reduce bearing life by 30%. At 0.2mm, it slashes by 55%. Improper mounting typically leads to outer ring distortion and premature fatigue.
Quick Selection Reference
| Configuration | Series | Best For | Load Range | Critical Risk |
|---|---|---|---|---|
| 2-Bolt | UCFL | Space-constrained, light to medium duty | Under 3kN | Housing ear cracking under moment loads |
| 3-Bolt | UCFB | Vertical mounting, three-point stability | Moderate | Limited availability |
| 4-Bolt | UCF / UCFC | Heavy loads, high vibration, maximum rigidity | Over 5kN | Base flatness (0.1mm = 30% life reduction) |
The L.E.S.C. Selection Framework
To move beyond catalog checking and into true engineering selection, use the L.E.S.C. framework:
Load – Assess magnitude and direction (radial, axial, or moment). Determine the required load rating. Loads over 5kN or high vibration? Default to 4-bolt (UCF series).
Environment – Evaluate moisture, chemical exposure, and temperature. Stainless steel housings and food-grade lubricants are required for food processing and washdown applications.
Space – Identify dimensional constraints. Limited space (under 50mm width) and loads under 3kN? Use 2-bolt (UCFL series).
Cost – Consider total lifecycle costs, including maintenance and downtime. A cheaper 2-bolt unit that fails in 2,200 hours is more expensive than a 4-bolt unit that runs 14,000 hours.
Insert Series and Locking Mechanisms
Flange mounted bearings are available with several insert series:
UC Series (Set Screw Locking) – One or two set screws in the extended inner ring are tightened against the shaft using a hex key. Fast and economical, but creates point-load indentations on the shaft. Suitable for moderate speeds and steady loads.
UK Series (Adapter Sleeve Locking) – A tapered sleeve (1:12 taper) is driven between the shaft and the bearing bore using a lock nut. Provides 360-degree concentric clamping force without shaft damage. Enables bearings to operate at higher speeds and run more smoothly.
SA Series (Set Screw Locking) – Standard configuration with set screw locking. Suitable for general-purpose applications.
SB Series (Set Screw Locking, Narrow Inner Ring) – Narrow inner ring design for applications with axial space constraints.
UE Series (Eccentric Collar Locking) – Cam-action collar rotated to lock the bearing. Offers uniform grip without shaft damage. Suitable for reversing loads and vibrating conditions.
UEL Series (Eccentric Collar Locking, Extended Inner Ring) – Extended inner ring for enhanced shaft support. Suitable for reversing loads and vibrating conditions.
200 Series vs 300 Series
200 Series (Standard Duty) – Standard load capacity for general industrial applications. Suitable for moderate loads and speeds.
300 Series (Heavy Duty) – Enhanced load capacity and robust construction for demanding applications with higher loads, vibration, and reversing conditions.
Installation Considerations
Proper installation is essential for optimal performance:
Mounting Surface Preparation – Ensure the mounting surface is clean, flat, and free from debris. Remove any burrs before installation. For flanged housings, improper mounting typically leads to outer ring distortion and premature fatigue.
Base Flatness – A deviation of even 0.1mm can reduce bearing life by 30%. At 0.2mm, life is reduced by 55%. This applies to all flange bearing configurations, with 4-bolt units being most sensitive to flatness errors.
Bolt Torque – Torque mounting bolts to the manufacturer recommended specifications. Use a cross-pattern (star pattern) for flange units to ensure even pressure.
Alignment – Ensure proper shaft alignment to prevent uneven stress distribution. Flange bearings typically allow a small degree of misalignment per manufacturer specifications – up to a few degrees depending on the series and design.
Housing Materials
Housing materials directly affect durability, corrosion resistance, and load capacity:
Cast Iron – The most common material. Offers excellent strength, rigidity, and vibration damping. Suitable for general industrial applications.
Ductile Iron – Provides more strength and ductility than gray cast iron. Suitable for heavy-duty and high-impact applications.
Stainless Steel – Resists corrosion and withstands chemical washdowns. Essential for food processing, marine, or chemical environments.
Pressed Steel – Lighter and more compact than cast iron versions. Cost-effective option for moderate duty.
Die-Cast Zinc – Non-corrosive and lightweight. Suitable for moderate-load applications.
Thermoplastics – Lightweight and corrosion-resistant. Suitable for moderate-load applications.
Common Industry Applications
Flange mounted bearings are found throughout industrial machinery:
- Automotive – Belt drives, alternators, suspension systems, assembly line conveyors.
- Agricultural Machinery – Combine harvesters, balers, tillage equipment, sprayers.
- Material Handling and Conveyors – Belt conveyors, roller conveyors, bucket elevators.
- Food Processing – Wash-down areas requiring corrosion-resistant materials and food-grade lubricants.
- Mining and Aggregate – Crushers, screens, heavy-duty conveyors.
- Pumps and Fans – Industrial pumps, HVAC fans, blowers.
Interchangeability and Standards
Most flange mounted bearings follow international standards (ISO, JIS) for external dimensions and housing bolt hole patterns. This ensures that a bearing from one manufacturer can be replaced with an equivalent from another without modifying the equipment.
The UC, UK, SA, SB, UE, and UEL series designations are widely recognised and cross-referenced across brands. SKF has developed a range of ball bearing units called the “UC range” (UCF, UCFX and UKF series) designed to be interchangeable with equipment compliant with Japanese Industrial Standards (JIS). Timken also offers U Series mounted ball bearings including UCFC, UELFC, and UKFC series.
Conclusion
Flange mounted bearings offer a compact, space-efficient solution for shaft support when the shaft runs perpendicular to the mounting surface. Their key advantages – easy installation, self-aligning capability, pre-lubrication, and standardized dimensions – make them a practical choice for engineers and maintenance professionals alike.
When selecting a flange mounted bearing, focus on three decisions:
- Bolt configuration – 2-bolt (UCFL) for space-constrained, light to medium loads under 3kN; 3-bolt (UCFB) for vertical mounting and three-point stability; 4-bolt (UCF/UCFC) for loads over 5kN, high vibration, and maximum rigidity.
- Insert series and locking mechanism – set screw (UC/SA/SB) for economy and quick MRO replacement; eccentric collar (UE/UEL) for reversing loads and vibration; adapter sleeve (UK) for heavy-duty reliability, reversing loads, and high-speed operation.
- Housing material – cast iron for general industrial; stainless steel for washdown and food processing; ductile iron for heavy loads and impact.
Start with your load requirements and mounting surface. Work through the L.E.S.C. framework above. You will find a solution that fits your machinery and your maintenance schedule.
Key Takeaways
- Flange mounted bearings are pre-assembled, ready-to-bolt units for shafts perpendicular to the mounting surface
- Three bolt configurations: 2-bolt (UCFL, compact, under 3kN), 3-bolt (UCFB, vertical mounting), and 4-bolt (UCF/UCFC, over 5kN, maximum rigidity)
- Base flatness is critical – 0.1mm deviation reduces bearing life by 30%
- Use the L.E.S.C. framework: Load, Environment, Space, Cost
- Choose housing material based on your operating environment – stainless steel for washdown, ductile iron for heavy loads
- Standardized dimensions ensure global interchangeability across brands
A flange mounted bearing – also called a flanged bearing unit or flange unit – is a type of mounted bearing consisting of a sealed bearing insert preassembled into a flanged housing. The housing bolts directly onto a mounting surface using bolts through the flange. Flange mounted bearings are used when the shaft axis is perpendicular to the bearing mounting surface. See Section 2 (Definition & Components) for a full technical description.
Flange mounted bearings attach to vertical or inclined surfaces using flange bolt patterns, supporting shafts perpendicular to the mounting surface. Pillow block bearings mount on flat horizontal surfaces with base bolt holes, supporting shafts parallel to the mounting surface. Flange units are ideal for space-constrained installations and sidewall mounting; pillow blocks suit applications with flat mounting bases and horizontal shafts.
Three main bolt configurations: 2-bolt (diamond/oval shape, compact footprint, light to medium-duty), 3-bolt (round shape, three-point mounting, vertical applications), and 4-bolt (square/round shape, maximum rigidity, heavy loads).
Six insert series: UC (set screw locking), UK (adapter sleeve locking), SA (set screw locking), SB (set screw locking, narrow inner ring), UE (eccentric collar locking, flat head), UEL (eccentric collar locking, extended inner ring). Each combines with housing suffixes (F, FA, FB, FC, FL, FS) to form complete unit codes.
200 series denotes standard duty with standard load capacity for general industrial applications. 300 series denotes heavy duty with enhanced load capacity for demanding applications with higher loads and vibration. The “2” or “3” in the bore size code indicates the series.
UCF series features a square 4-bolt flange, providing maximum rigidity and vibration resistance, suitable for higher loads. UCFL series features a diamond/oval 2-bolt flange with a compact footprint, ideal for narrow machinery frames and space-constrained applications.
A piloted flange bearing features a machined centering shoulder (boss) that fits into a precise bulkhead opening. This provides accurate centering and enhanced concentricity. Often used to improve alignment and fit.
Yes. Flange mounted bearings are factory-filled with grease and sealed. They are ready for use upon installation and require no initial lubrication.
Yes. Wide inner ring ball bearings with self-aligning spherical outside diameters compensate for shaft misalignment. Ball bearing units can accommodate moderate initial misalignment.
Common materials include cast iron (most common), die-cast zinc, pressed steel, stainless steel, and thermoplastics. Material choice affects durability, corrosion resistance, and load capacity.
Selection should consider bolt configuration (2/3/4-bolt based on load and space), shaft diameter, load type and magnitude, operating environment (moisture, chemicals, temperature), and maintenance requirements.
Flange mounted bearings are used in automotive, agricultural machinery, material handling and conveyors, food processing, mining and aggregate, and pumps and fans.
Yes. Flange mounted bearings are specifically designed for vertical or angled surface mounting. The flange’s extended edges make it easy to bolt the bearing onto the side of a machine or frame.
Yes. Flange mounted bearings are designed with replaceable insert bearings. Match the manufacturer model number on your existing bearing to ensure correct replacement
