SNR USPE206 30 mm - Cast Iron Pillow Block Bearing Unit

SNR USPE206 30 mm - Cast Iron Pillow Block Bearing Unit

SNR USPE206 is a complete self-aligning pillow block bearing unit manufactured under the SNR brand of the NTN Group, designed for a 30 mm diameter shaft. It consists of a PE206 cast iron housing and a US206G2 insert ball bearing secured to the shaft by set screws. The unit has an overall housing length of 158 mm, mounting hole spacing of 118 mm and a shaft centre height of 42.9 mm. Its spherical bearing seating arrangement allows limited angular adjustment during installation.

Technical Specifications - SNR USPE206

Important technical distinction: USPE206 is a complete mounted bearing unit, not an individual bearing insert or an empty housing.

The basic dynamic and static load ratings refer to the US206G2 bearing insert. They do not represent the maximum permissible load of the cast iron housing, mounting bolts or supporting machine structure.

For replacement applications, the shaft centre height, mounting hole spacing and overall housing dimensions are particularly important.

What Does SNR USPE206 Mean?

US - Insert Ball Bearing Series

US identifies an SNR insert ball bearing series featuring shaft locking by set screws.

Compared with the UC insert bearing series, the US construction has a narrower inner ring.

The US206G2 bearing insert used in this unit has an inner ring width of 30 mm.

Its spherical outer ring surface is designed to fit into a corresponding spherical housing seat.

This construction allows limited angular adjustment during installation.

PE - Cast Iron Pillow Block Housing

PE identifies the pillow block housing configuration used in the USPE series.

The PE206 housing has a mounting base with two elongated mounting holes.

The mounting hole centre distance is 118 mm.

Its function is to support the bearing insert and transfer operating forces from the rotating shaft to the machine structure.

206 - Bearing Unit Size

The number 206 identifies the dimensional size of the mounted bearing unit.

For the standard SNR USPE206, the nominal shaft diameter is 30 mm.

The number does not independently specify the bearing's internal clearance, lubricant or precision class.

G2 - Bearing Insert Designation

G2 is an integral part of the US206G2 insert bearing designation.

It must be retained when identifying or ordering a replacement insert.

The suffix should not automatically be interpreted as a C3 internal clearance designation, a specific grease specification or an equivalent suffix used by another manufacturer.

SNR - NTN Group Brand

SNR is a brand within the NTN Group, a manufacturer of rolling bearings, bearing inserts, housings and complete mounted bearing units.

Alternative Designations and Reference Numbers

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

• SNR USPE206

• USPE206 SNR

• SNR USPE 206

• USPE 206 SNR

• NTN-SNR USPE206

• USPE206 30 mm

• SNR USPE206 pillow block bearing

• USPE206 cast iron bearing unit

• USPE206 mounted ball bearing unit

Related component designations:

• PE206 - separate cast iron pillow block housing.

• US206G2 - insert ball bearing.

PE206 and US206G2 identify individual components and must not be treated as alternative designations for the complete USPE206 assembly.

Construction and Operating Principle of SNR USPE206

PE206 Cast Iron Pillow Block Housing

The PE206 housing is manufactured from grey cast iron.

It features a mounting base with two elongated holes for securing the bearing unit to the supporting machine structure.

The mounting hole centre distance is 118 mm, and the overall housing length is 158 mm.

The shaft centre height is 42.9 mm, measured from the mounting base.

This dimension is particularly important when replacing an existing bearing unit because it determines the position of the shaft relative to other machine components.

The housing supports the bearing insert and transfers operating forces to the machine frame.

US206G2 Insert Ball Bearing

The US206G2 insert is a ball bearing with a spherical outer ring and an inner ring secured to the shaft by set screws.

The inner ring width is 30 mm.

Its spherical outer surface fits into the matching housing seat, allowing limited angular adjustment during installation.

This helps compensate for small initial alignment errors between the shaft and housing.

However, the self-aligning feature does not eliminate the need for correct machine alignment.

Single-Lip Sealing Arrangement

The US206G2 insert used in the USPE206 unit features a single-lip sealing arrangement.

The seals help retain lubricant and reduce the entry of contaminants into the rolling element area.

Their effectiveness depends on operating speed, contamination levels, temperature and environmental conditions.

The seals should not be considered fully resistant to high-pressure washing, aggressive chemicals or severe abrasive contamination without application-specific verification.

Set Screw Shaft Locking

The bearing insert is secured to the shaft using set screws located in the inner ring.

This arrangement helps prevent unwanted relative movement between the shaft and bearing inner ring.

Correct installation requires a suitable shaft diameter, appropriate surface condition and tightening according to the manufacturer's instructions.

Radial and Axial Load Support

SNR USPE206 is primarily designed to support rotating shafts subjected to radial loads.

The insert ball bearing can also accommodate axial loads within the limitations of its construction and shaft locking arrangement.

The basic dynamic load rating of the bearing insert is 19.5 kN.

The basic static load rating is 11.2 kN.

These values must not be interpreted as the allowable loading of the complete housing or its mounting bolts.

SNR USPE206 vs Other Bearing Unit Variants

USPE206 vs PE206

USPE206 is a complete bearing unit containing both the housing and insert bearing.

PE206 identifies the separate cast iron housing without the bearing insert.

A customer requiring a complete mounted bearing unit should order USPE206 rather than PE206.

USPE206 vs US206G2

US206G2 is the individual insert ball bearing.

USPE206 combines that insert with the PE206 pillow block housing.

The bearing insert may be replaced separately when the housing remains serviceable and the replacement insert is fully compatible.

USPE206 vs UCPE206

Both units belong to the SNR pillow block bearing family and are designed for a nominal 30 mm shaft.

However, they use different bearing inserts.

USPE206 incorporates a US206G2 insert with a 30 mm inner ring width.

UCPE206 incorporates a UC206G2 insert with a 38.1 mm inner ring width.

The difference affects the axial dimensions of the bearing insert and its position relative to the housing.

The two assemblies should not automatically be considered interchangeable.

USPE206 vs USP206

USPE206 and USP206 use different pillow block housing configurations.

USPE206 uses a PE206 housing with an overall length of 158 mm and mounting hole spacing of 118 mm.

USP206 uses a P206 housing with an overall length of 165 mm and mounting hole spacing of 121 mm.

Although both units are designed for a nominal 30 mm shaft, their mounting geometry differs.

They are not direct replacements without checking the machine installation.

Selection and Interchangeability of SNR USPE206

Before ordering, verify the following:

1. Complete product designation USPE206.

2. Manufacturer and required bearing unit version.

3. Nominal shaft diameter of 30 mm.

4. PE206 housing configuration.

5. US206G2 bearing insert specification.

6. Mounting hole centre distance of 118 mm.

7. Overall housing length of 158 mm.

8. Shaft centre height of 42.9 mm.

9. Housing width of 40 mm.

10. Mounting slot dimensions of 14x22 mm.

11. Shaft locking arrangement.

12. Bearing sealing construction.

13. Radial and axial operating loads.

14. Rotational speed.

15. Operating temperature.

16. Lubrication and contamination conditions.

Can SNR USPE206 Be Replaced by a Bearing Unit from Another Manufacturer?

Pillow block bearing units with similar designations may be available from different manufacturers.

However, identical nominal shaft diameters do not guarantee complete interchangeability.

The mounting hole spacing, housing length, shaft centre height, bearing insert construction, locking arrangement and operating ratings must be compared.

A matching 30 mm shaft diameter alone is not sufficient to establish full mechanical compatibility.

Typical Applications of SNR USPE206

Pillow block bearing units of this construction are designed to support rotating shafts in industrial machinery.

Typical applications include:

• Industrial conveyor systems.

• Material handling equipment.

• Production machinery.

• Drive and auxiliary shafts.

• Machinery with shafts supported by pillow block bearing units.

• Equipment requiring replaceable insert ball bearings.

These are typical applications associated with this bearing unit construction, not a verified list of specific machine models originally equipped with SNR USPE206.

Suitability for a particular application must be confirmed against the machine's dimensional and operating requirements.

Installation and Operating Recommendations

Preparing the Mounting Surface

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

Uneven mounting surfaces may distort the housing and adversely affect bearing operation.

Shaft Installation

Verify the nominal 30 mm shaft diameter and inspect the shaft surface before installation.

Avoid transmitting inappropriate installation forces through the rolling elements, as this may damage the raceways.

Securing the Bearing Insert

Tighten the set screws according to the manufacturer's installation procedure.

After installation, verify the shaft position and check that excessive stresses are not introduced by misalignment.

Lubrication

The housing has an R1/8" grease fitting connection.

Lubricant selection and relubrication intervals must follow the manufacturer's recommendations and the actual operating conditions.

Do not introduce an incompatible grease without verifying its suitability.

Operating Inspection

During service, check:

• Bearing temperature.

• Noise and vibration.

• Seal condition.

• Shaft locking.

• Housing mounting bolts.

• Signs of contamination or lubricant loss.

Storage

Store the bearing unit in a clean, dry environment.

Protect the bearing seals, housing surfaces and mounting areas against moisture, dust, corrosion and mechanical damage.

Frequently Asked Questions - SNR USPE206

What is SNR USPE206?

SNR USPE206 is a complete cast iron pillow block bearing unit consisting of a PE206 housing and a US206G2 insert ball bearing.

What shaft diameter does USPE206 fit?

The nominal shaft diameter is 30 mm.

What are the main dimensions of SNR USPE206?

The overall housing length is 158 mm, the mounting hole centre distance is 118 mm, the shaft centre height is 42.9 mm and the overall housing height is 82 mm.

Which bearing insert is used in USPE206?

The unit incorporates a US206G2 insert ball bearing secured to the shaft by set screws.

Is USPE206 a housing only?

No. USPE206 is a complete mounted bearing unit. The separate cast iron housing is designated PE206.

What is the difference between USPE206 and UCPE206?

USPE206 uses a US206G2 insert with a 30 mm inner ring width. UCPE206 uses a UC206G2 insert with a 38.1 mm inner ring width.

What are the load ratings of SNR USPE206?

The bearing insert has a basic dynamic load rating of 19.5 kN and a basic static load rating of 11.2 kN. These ratings do not represent the maximum permissible loading of the complete housing or mounting arrangement.

Are USPE206 and USP206 interchangeable?

Not automatically. USPE206 has an overall housing length of 158 mm and mounting hole spacing of 118 mm, while USP206 has corresponding dimensions of 165 mm and 121 mm.

SNR USPE206 - Key Technical Information

SNR USPE206 is a self-aligning cast iron pillow block bearing unit for a 30 mm shaft, manufactured under the SNR brand of the NTN Group. It combines a PE206 housing with a US206G2 insert ball bearing secured by set screws. The housing measures 158 mm in length, with 118 mm mounting hole spacing and a shaft centre height of 42.9 mm.

SNR USPE206 at simmering.pl

SNR USPE206 is offered by simmering.pl, a specialist supplier of rolling bearings, self-aligning bearing inserts, bearing housings and complete mounted bearing units.

We serve machinery manufacturers, industrial maintenance departments, mechanical repair workshops and B2B purchasing teams.

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