SNR FE 210 143x143 - Square Cast Iron Four-Bolt Flange Housing

SNR FE 210 143x143 mm - Square Cast Iron Four-Bolt Flange Bearing Housing

SNR FE 210 is a square cast iron flange bearing housing from the FE series, manufactured under the SNR brand of the NTN Group. The housing features four mounting holes with a centre-to-centre spacing of 111x111 mm and nominal external flange dimensions of 143x143 mm. It is designed to accommodate a compatible self-aligning bearing insert. The FE 210 designation identifies the housing only, supplied without a bearing insert.

Technical Specifications - SNR FE 210

Important: SNR FE 210 is not a complete rolling bearing or assembled bearing unit. It is a separate cast iron housing designed to accommodate a compatible bearing insert. Dynamic load rating, static load rating, internal clearance, rotational speed and bearing sealing characteristics depend on the selected insert and must not be assigned to the housing itself.

What Does SNR FE 210 Mean?

FE - Square Flange Bearing Housing Series

FE identifies a series of square cast iron flange bearing housings featuring four mounting holes.

These housings are designed to support rotating shafts when assembled with suitable bearing inserts.

The four-bolt flange configuration allows the housing to be secured to a flat machine mounting surface.

The FE series must not be confused with the oval two-bolt flange housings belonging to the separate NTN-SNR FLE series.

210 - Housing Size Designation

The number 210 identifies the dimensional size of the housing and its corresponding bearing insert family.

It does not directly indicate the shaft diameter.

In the complete UCFE210 bearing unit, the FE210 housing is combined with a UC210G2 bearing insert having a nominal shaft bore diameter of 50 mm.

The 50 mm dimension refers to the UC210G2 bearing insert, not to the cast iron FE 210 housing.

SNR - Manufacturer Brand

SNR is a bearing brand within the NTN Group, a manufacturer of rolling bearings, bearing housings and mounted bearing units for industrial applications.

The designation FE 210 identifies a specific housing within the NTN-SNR flange bearing housing system.

Alternative Designations and Reference Numbers

The product may appear in technical catalogues, distributor listings and purchasing enquiries under the following designations:

• SNR FE 210

• FE 210 SNR

• SNR FE210

• FE210 SNR

• NTN-SNR FE 210

• NTN-SNR FE210

• FE210 bearing housing

• FE 210 square flange housing

• SNR FE210 cast iron housing

• FE210 four-bolt flange bearing housing

These are alternative written forms of the same housing designation.

However, the separate FE 210 housing must not be confused with the complete UCFE210 bearing unit.

Construction of the SNR FE 210 Bearing Housing

Square Cast Iron Housing

The FE 210 housing is manufactured from grey cast iron and features a square flange construction.

Its primary function is to accommodate a compatible bearing insert and transfer loads from the bearing assembly to the supporting machine structure.

Grey cast iron is commonly used in industrial bearing housings because of its structural rigidity and vibration damping characteristics.

However, the permissible loading of the complete assembly depends on the housing construction, bearing insert, load direction, mounting bolts and supporting structure.

Four Mounting Holes

The FE 210 housing has four mounting holes positioned at the corners of its square flange.

The mounting hole centre distance is 111x111 mm, and the nominal mounting hole diameter is 18 mm.

The four-bolt configuration allows the housing to be attached to a suitably prepared machine frame, mounting plate or structural surface.

Unlike oval two-bolt flange housings, FE 210 requires a four-point mounting arrangement.

Spherical Bearing Insert Seat

The internal housing geometry is designed to accommodate a compatible bearing insert with a spherical outer surface.

This arrangement allows limited angular adjustment of the bearing insert relative to the housing during installation.

The self-aligning seating design helps compensate for certain initial alignment deviations between the shaft and housing.

However, the permissible angular adjustment depends on the complete bearing unit construction and must not be treated as unlimited shaft misalignment capability.

Rolling Elements and Bearing Seals

The separate FE 210 housing does not contain bearing rings, rolling elements, a bearing cage or bearing insert seals.

These components belong to the separately selected bearing insert.

Consequently, parameters such as C3 or C4 internal clearance, cage material and bearing limiting speed do not describe the housing itself.

SNR FE 210 vs Complete UCFE210 Bearing Unit

Understanding the difference between the housing and the complete bearing unit is essential when ordering replacement components.

When Should SNR FE 210 Be Selected?

The separate FE 210 housing is appropriate when the existing housing requires replacement and a compatible bearing insert is already available or will be ordered separately.

Before reusing an existing bearing insert, its condition, spherical outer surface, seals and seating requirements should be checked.

When Should SNR UCFE210 Be Selected?

The complete UCFE210 bearing unit is appropriate when both the housing and bearing insert are required.

In the configuration using the UC210G2 bearing insert, the nominal shaft diameter is 50 mm.

FE 210 should not be ordered when a complete assembled bearing unit is required.

SNR FE 210 vs Other Flange Bearing Housings

FE 210 vs FLE 210

The primary difference is the housing geometry and mounting arrangement.

• FE 210 - square flange bearing housing with four mounting holes.

• FLE 210 - oval flange bearing housing with two mounting holes.

Both designs belong to flange bearing housing families, but their mounting configurations are different.

They are not directly interchangeable without checking the machine structure and installation requirements.

FE 210 vs FE 209

FE 209 and FE 210 belong to the same housing family but are intended for different bearing insert sizes.

Even when selected external dimensions are similar, the internal bearing seating geometry may differ.

Replacement selection must therefore be based on the complete housing designation and insert seat dimensions rather than bolt spacing alone.

Selection and Interchangeability of SNR FE 210

Before ordering the FE 210 housing, verify the following:

1. Complete designation FE 210.

2. Square housing geometry.

3. Four mounting holes.

4. Mounting hole centre distance of 111x111 mm.

5. Nominal external flange dimensions of 143x143 mm.

6. Mounting hole diameter of 18 mm.

7. Bearing insert seat dimensions and geometry.

8. Compatible bearing insert designation.

9. Shaft centre position relative to the mounting surface.

10. Direction and magnitude of operating loads.

11. Environmental operating conditions.

12. Installation requirements specified by the machine manufacturer.

Can an FE 210 Housing from Another Manufacturer Be Used?

Bearing housings with similar designations may be available from different manufacturers.

However, a matching designation does not automatically guarantee interchangeability.

In addition to the mounting hole pattern and external dimensions, the spherical bearing seat geometry, insert compatibility, shaft centre height and mounting requirements must be verified.

Identical flange dimensions do not guarantee compatibility with a particular bearing insert.

Applications of SNR FE 210

The FE 210 housing is intended for the construction of bearing units supporting rotating shafts.

Typical applications for this type of square four-bolt flange housing include:

• Industrial conveyor systems.

• Material handling equipment.

• Manufacturing machinery.

• Mechanical drive assemblies.

• Agricultural machinery.

• Shaft support systems mounted to machine frames.

• Bearing assemblies attached to vertical or horizontal supporting surfaces.

These are typical applications based on the housing design, not a confirmed list of specific machines originally equipped with SNR FE 210.

Suitability for a particular application must be determined from the machine's technical documentation and operating requirements.

Installation and Operating Recommendations

Mounting Surface Preparation

The mounting surface should be clean, sufficiently rigid and flat.

Incorrect contact between the housing and mounting surface may introduce additional mechanical stress into the cast iron body.

Housing Installation

Use all four mounting holes according to the machine design.

Mounting bolts should be tightened evenly using the torque specified for the particular bolted connection.

Bearing Insert Installation

The compatible bearing insert must be installed according to the manufacturer's instructions.

Avoid damaging the spherical outer surface of the insert or the housing seat.

Installation forces must not be transmitted improperly through the rolling elements.

Lubrication

Lubrication requirements depend on the selected bearing insert.

The lubricant type, quantity and relubrication interval should be determined from the bearing insert documentation and operating conditions.

Maintenance

During maintenance inspections, check the housing for cracks, corrosion, loose fasteners and damage to the mounting surfaces.

The installed bearing insert should also be checked for abnormal noise, vibration, temperature rise and sealing problems.

Storage

Store the housing in a clean, dry environment.

Protect the bearing seating surfaces from corrosion, contamination and mechanical damage.

Frequently Asked Questions - SNR FE 210

What is SNR FE 210?

SNR FE 210 is a square cast iron four-bolt flange bearing housing designed to accommodate a compatible self-aligning bearing insert.

Is SNR FE 210 square or oval?

FE 210 is a square housing with four mounting holes. Oval two-bolt flange housings belong to the separate FLE housing family.

What are the dimensions of SNR FE 210?

The nominal external flange dimensions are 143x143 mm, the mounting hole pattern is 111x111 mm, and the mounting hole diameter is 18 mm.

Does SNR FE 210 include a bearing?

No. FE 210 identifies the cast iron housing only. The bearing insert must be ordered separately unless a complete bearing unit is selected.

Which bearing insert is compatible with FE 210?

The complete UCFE210 bearing unit uses the UC210G2 bearing insert. Compatibility with any other insert must be verified using its outer seating geometry and the housing specifications.

What shaft diameter is FE 210 designed for?

The housing itself does not directly determine the shaft bore diameter. The UC210G2 insert used in the UCFE210 bearing unit has a nominal bore diameter of 50 mm.

What is the difference between FE 210 and UCFE210?

FE 210 is the separate cast iron housing. UCFE210 is a complete bearing unit consisting of the FE210 housing and a UC210G2 bearing insert.

Can SNR FE 210 be replaced with a housing from another manufacturer?

Only after confirming the mounting dimensions, internal bearing seat geometry, insert compatibility and operating requirements. Similar designations alone do not establish interchangeability.

SNR FE 210 - Key Technical Information

SNR FE 210 is a square four-bolt flange bearing housing made from grey cast iron. It belongs to the FE series of the NTN-SNR product range. The nominal flange dimensions are 143x143 mm, with a mounting hole pattern of 111x111 mm. Supplied without a bearing insert, it accommodates compatible size 210 bearing inserts.

SNR FE 210 at simmering.pl

SNR FE 210 is offered by simmering.pl, a specialist supplier of rolling bearings, bearing housings, mounted bearing units and industrial sealing components.

We supply machinery manufacturers, industrial maintenance departments, mechanical repair workshops and B2B customers.

Our warehouse and order processing operations are located in Lublin, Poland. We supply customers throughout Europe and offer worldwide shipping.