SNR FLE212 - Iron Bearing Housing

SNR FLE212 - Two-Bolt Oval Flanged Cast Iron Bearing Housing

SNR FLE212 is a two-bolt oval flanged bearing housing manufactured by NTN-SNR. The housing is designed to accommodate compatible size 212 insert ball bearings with spherical outer ring surfaces. Its cast iron construction provides a rigid mounting structure for industrial shaft support systems. The housing has an overall length of 238 mm, a width of 138 mm and a mounting hole centre distance of 202 mm.

SNR FLE212 is a bearing housing only, not a complete mounted bearing unit. The insert bearing is a separate component unless explicitly included in the product offer.

Technical Specifications - SNR FLE212

The dimensional specifications correspond to the FLE212 housing used in NTN-SNR UCFLE212 and EXFLE212 mounted bearing units.

Bearing load ratings, internal clearance and rolling element specifications are determined by the selected insert bearing, not by the housing alone.

What Does SNR FLE212 Mean?

The designation identifies the housing series and construction size.

FLE - Two-Bolt Oval Flanged Housing Series

FLE identifies a series of oval cast iron flanged bearing housings with two mounting holes.

The housing incorporates a spherical bearing seat designed to accommodate a compatible insert bearing.

This construction allows the bearing insert to compensate for limited initial angular misalignment between the shaft and housing.

212 - Housing Size

The number 212 identifies the housing construction size.

It is associated with compatible size 212 insert bearings, typically designed for a nominal shaft diameter of 60 mm.

The number does not directly represent the diameter of the housing opening.

SNR - Bearing and Housing Brand

SNR is a bearing brand within NTN Group.

The complete designation FLE212 identifies the housing and distinguishes it from complete mounted bearing units containing an insert bearing.

Construction of SNR FLE212

Cast Iron Housing Body

The FLE212 housing is manufactured from grey cast iron.

Cast iron provides structural rigidity and supports the transfer of bearing loads to the machine frame.

The housing is designed to be secured to a suitable mounting surface using two mounting bolts.

Oval Flange Design

The oval flange features two mounting ears positioned on opposite sides of the central bearing seat.

This configuration provides a compact two-point mounting arrangement.

The design is particularly useful where a four-bolt square flange arrangement is unsuitable or where the machine has been designed for a two-bolt housing.

Spherical Bearing Seat

The internal housing seat has a spherical geometry.

It is designed to accommodate the spherical outer ring of a compatible insert ball bearing.

The spherical seating arrangement allows the insert to achieve the required initial alignment during installation.

It does not permit unlimited angular movement or compensate for severe shaft misalignment during continuous operation.

Two Mounting Holes

The FLE212 housing has two mounting holes with a nominal diameter of 18 mm.

The centre-to-centre distance between the holes is 202 mm.

These dimensions are particularly important when replacing an existing housing because they determine compatibility with the mounting pattern of the machine.

Lubrication Arrangement

The housing is designed to support relubrication of a compatible bearing insert.

The specified grease fitting thread is R1/8".

Correct relubrication requires a compatible insert bearing and proper alignment of the lubrication passages.

The presence of a grease fitting in the delivery of a housing-only product should be confirmed in the supplier's offer.

SNR FLE212 vs Complete Mounted Bearing Units

One of the most important distinctions is the difference between a bearing housing and a complete mounted bearing unit.

SNR FLE212 - Housing Only

FLE212 identifies the cast iron housing without the rolling bearing insert.

The housing itself does not contain balls, bearing raceways or a shaft locking mechanism.

SNR UCFLE212 - Set Screw Locking Bearing Unit

UCFLE212 is a complete mounted bearing unit consisting of the FLE212 housing and a UC212G2 insert bearing.

The insert is secured to the shaft using set screws.

SNR EXFLE212 - Eccentric Locking Collar Bearing Unit

EXFLE212 combines the FLE212 housing with an EX212G2 insert bearing.

The EX212G2 insert uses an eccentric locking collar for shaft attachment.

The housing design is the same, but the shaft locking arrangement differs.

FLE212, UCFLE212 and EXFLE212 should not be treated as identical products.

SNR FLE212 and EX212G2 Compatibility

The FLE212 housing is used with the SNR EX212G2 insert bearing in the complete EXFLE212 unit.

The EX212G2 insert has the following principal dimensions:

The spherical outside surface of the insert is designed to cooperate with the matching seat inside the FLE212 housing.

The insert bearing and housing together form a mounted bearing assembly.

The shaft locking collar belongs to the insert bearing, not to the housing.

Key Dimensions for Housing Replacement

When replacing an existing two-bolt flange housing, several dimensions must be checked.

Overall Length - 238 mm

The total housing length determines the space required along the mounting flange.

Overall Width - 138 mm

The width determines the housing's transverse installation envelope.

Mounting Hole Spacing - 202 mm

The mounting holes must align with the existing machine structure.

This dimension is particularly important for replacement compatibility.

Mounting Hole Diameter - 18 mm

The mounting hole diameter must be compatible with the selected fasteners and the machine's mounting arrangement.

Bearing Centre Position - 34 mm

The distance between the bearing centre and the mounting face affects shaft positioning relative to the machine frame.

Spherical Bearing Seat

The housing must accommodate the correct spherical outer ring geometry of the selected insert bearing.

Matching the mounting hole spacing alone does not guarantee that another manufacturer's insert will fit correctly.

Applications of SNR FLE212

Two-bolt oval flanged bearing housings are used in industrial machinery where rotating shafts require support through mounted bearing units.

Typical applications for this type of housing include:

• Conveyor systems and belt conveyors.

• Agricultural machinery.

• Material handling equipment.

• Industrial processing machinery.

• Auxiliary drive assemblies.

• Shaft support arrangements in production equipment.

These are general applications for two-bolt flanged bearing housings rather than confirmed OEM applications of the exact FLE212 designation.

Suitability depends on the insert bearing, housing mounting arrangement, operating loads and environmental conditions.

Housing Selection and Interchangeability

Before purchasing SNR FLE212, verify the following technical requirements.

1. Complete Product Designation

Confirm that the required product is FLE212 rather than UCFLE212 or EXFLE212.

This prevents confusion between a housing-only component and a complete mounted bearing unit.

2. Mounting Dimensions

Check the overall length of 238 mm, width of 138 mm, mounting hole spacing of 202 mm and hole diameter of 18 mm.

3. Bearing Insert Compatibility

Confirm that the selected insert belongs to a compatible size 212 series and has the required spherical outer ring geometry.

4. Shaft Diameter

The housing itself is not mounted directly on the shaft.

The shaft diameter is determined by the selected insert bearing.

With the corresponding UC212G2 or EX212G2 insert, the nominal shaft diameter is 60 mm.

5. Shaft Locking Arrangement

Determine whether the application requires a set-screw insert or an eccentric locking collar insert.

The housing does not provide shaft locking independently.

6. Lubrication Compatibility

Check the grease fitting arrangement and the lubrication passages of the selected insert.

7. Operating Loads

The load capacity of the complete bearing unit must be assessed using the insert bearing specifications together with the housing strength and mounting conditions.

A housing-only product should not be assigned the rolling bearing's dynamic or static load ratings.

Installation and Maintenance

Prepare the Mounting Surface

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

Remove debris and inspect the mounting area for damage or distortion.

Check the Mounting Pattern

Verify the 202 mm hole centre distance and the compatibility of the 18 mm mounting holes with the selected fasteners.

Install the Bearing Insert

The compatible insert bearing must be correctly seated within the spherical housing seat.

Avoid damaging the spherical contact surfaces during installation.

Align the Shaft

Ensure that the shaft is correctly positioned relative to the housing before securing the insert bearing to the shaft.

The spherical seating arrangement can accommodate limited initial misalignment, but it should not be used to compensate for poor machine assembly.

Tighten the Housing Bolts

Tighten the mounting bolts according to the machine manufacturer's instructions and the specifications of the fasteners used.

Do not confuse the tightening torque for an insert bearing's locking screw with the tightening torque required for the housing mounting bolts.

Check Lubrication

Where relubrication is required, confirm that the housing and insert lubrication passages are compatible.

Use the lubricant and maintenance interval appropriate for the selected insert bearing and operating conditions.

Frequently Asked Questions - SNR FLE212

What is SNR FLE212?

SNR FLE212 is a two-bolt oval cast iron flanged bearing housing designed to accommodate a compatible size 212 insert ball bearing.

Is SNR FLE212 a complete bearing unit?

No. FLE212 identifies the housing only. Complete mounted bearing units have designations such as UCFLE212 or EXFLE212.

What are the dimensions of SNR FLE212?

The housing has an overall length of 238 mm, width of 138 mm and mounting hole centre distance of 202 mm.

How many mounting holes does FLE212 have?

The housing has two mounting holes, each with a nominal diameter of 18 mm.

What material is SNR FLE212 made from?

The housing is manufactured from grey cast iron.

Is FLE212 suitable for a 60 mm shaft?

The housing does not mount directly onto the shaft. When combined with a compatible size 212 insert bearing, such as UC212G2 or EX212G2, it forms a bearing unit for a nominal 60 mm shaft.

Can SNR EX212G2 be installed in FLE212?

Yes. NTN-SNR uses the FLE212 housing together with the EX212G2 insert in the complete EXFLE212 mounted bearing unit.

What is the difference between FLE212 and UCFLE212?

FLE212 is the housing only. UCFLE212 is a complete bearing unit containing the FLE212 housing and UC212G2 insert bearing.

What is the difference between UCFLE212 and EXFLE212?

Both use the FLE212 housing, but the insert bearings have different shaft locking systems. UCFLE212 uses a set-screw locking insert, while EXFLE212 uses an eccentric locking collar insert.

Does SNR FLE212 have a grease fitting?

The housing is designed with an R1/8" grease fitting thread. Whether the grease fitting is included with the housing-only product must be confirmed in the product offer.

Can FLE212 be replaced with another manufacturer's housing?

Possibly, but only after verifying the mounting dimensions, spherical bearing seat, insert compatibility, lubrication arrangement and installation requirements.

SNR FLE212 - Key Technical Information

SNR FLE212 is a two-bolt oval flanged bearing housing manufactured from grey cast iron. It has an overall length of 238 mm, width of 138 mm, mounting hole spacing of 202 mm and mounting hole diameter of 18 mm. Designed for compatible size 212 insert bearings, it is used in mounted bearing units including SNR UCFLE212 and EXFLE212. The FLE212 designation refers to the housing only, without the bearing insert.

SNR FLE212 at simmering.pl

SNR FLE212 can be searched by its complete manufacturer designation at simmering.pl.

Based in Lublin, Poland, simmering.pl supplies industrial bearings, bearing housings, insert bearings and sealing components to maintenance departments, engineering teams and international B2B customers.

When ordering this housing, it is important to distinguish the housing-only reference FLE212 from complete mounted bearing units containing an insert bearing.

Stock availability, dispatch dates and international shipping options can be confirmed when submitting an inquiry.