MR Miniature SeriesDeep Groove Ball Bearings

FR2

Name: FR2 Bearing
Brand: NLHB

d 3.175 × D 9.525 × B 3.967 mm

The FR2 is a deep groove ball bearing with bore 3.175mm, outer diameter 9.525mm, and width 3.967mm rated for dynamic load 0.5 kN.

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FR2 — representative product photo — Representative product

FR2 · 3.175x9.525x3.967 mm

📋 Technical Specifications

Bore (d)

3.175mm

Outer Dia. (D)

9.525mm

Width (B)

3.967mm

Dynamic Load (Cr)

0.54 kN(538 N)

Static Load (C0r)

0.17 kN(173 N)

Reference Speed

56000rpm

Bearing type	Deep Groove Ball Bearings
Series	MR Miniature Series
Seal type	Open
Material	Confirmed per inquiry — grade and certificate availability reviewed before quotation
Bore type	Confirmed per drawing
Measurement system	Inch (imperial). Metric values converted at 25.4 mm/in; inch values in brackets.

🔐 Model Code Breakdown

What each part of FR2 means.

Flange Inch

FR	FR = inch-series flange

📋 Nominal Variants by Seal Type

Catalog variants open a detail page. Inquiry-only configurations go directly to RFQ.

Seal Type	Model Code	Typical Use
Double metal shields	FR2ZZ	General dust protection	Quote →
Double contact rubber seals	FR2 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	FR2 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	FR2 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	3.175 (0.125")
Outer diameter (D)	9.525 (0.375")
Width (B)	3.967 (0.1562")

Corner radius, shoulder dimensions, fits and tolerances are confirmed against the requested suffix and application drawing before quotation.

📑 Drawings & 3D Model

FR2 bearing dimension drawing, 3.175 x 9.525 x 3.967 mm — FR2 dimension drawing: bore d 3.175 mm × outer diameter D 9.525 mm × width B 3.967 mm. Tolerance class ABEC-1 (P0). Internal design is shown schematically. Flange Ø Df 11.176 mm, flange width Bf 0.762 mm.

📑

2D Drawing (PDF)

Download PDF →

📐

2D DXF File

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📅

3D STEP Model

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The PDF drawing is free to download. DXF and 3D STEP files are sent on request: tell us the model and your application, and we reply with the CAD files.

⚡ Source-Data Reference Speed

Catalog reference

56,000 rpm

Lubrication method and application speed limit are confirmed per inquiry; no oil-speed value is derived from this number.

⇄ Same-size Bearings & Reference Options

The models below share the 3.175x9.525x3.967 mm boundary dimensions. Matching d/D/B alone does not prove interchangeability; verify seals, clearance, ring features, load ratings, fits, and application conditions before replacement.

Model	Relationship	Series	Seal	Action
FRW2	Different outer-ring feature	Flanged Thin-Section Bearings	Open	Quote →
FRW2zz	Same boundary dimensions — verify fit/load	FRW2	Shielded	Quote →
SFR2	Same boundary dimensions — verify fit/load	FR2	Open	Quote →
SFR2 2rs	Same boundary dimensions — verify fit/load	FR2	Sealed	Quote →
SFR2zz	Same boundary dimensions — verify fit/load	FR2	Shielded	Quote →
SFRW2	Same boundary dimensions — verify fit/load	FRW2	Open	Quote →
SFRW2zz	Same boundary dimensions — verify fit/load	FRW2	Shielded	Quote →

🔄 Related Models

Same bearing family or similar dimensions.

Same model family — dimensions may differSimilar size — reference only, verify all interfaces

⚙ Typical Applications

Electric motors

Fans and blowers

Pumps

Household appliances

Power tools

Office equipment

General machinery

Why choose NLHB?

NLHB supports both in-house manufacturing and qualified partner sourcing. We confirm the specification, supply route, inspection requirements, and available documentation before quotation.

About NLHB →

4,300+

Models

15+

Years

RFQ

Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of FR2?

The FR2 bearing has bore (d) = 3.175 mm, outer diameter (D) = 9.525 mm, and width (B) = 3.967 mm.

Is there a FR2 drawing or CAD file?

Yes. The FR2 dimension drawing (PDF) is free to download on this page. DXF and 3D STEP files are sent on request: tell us the model and your application.

What is the load rating of FR2?

Dynamic load rating (Cr) = 0.54 kN (538 N), static load rating (C0r) = 0.17 kN.

What tolerance class is the FR2?

The standard tolerance class of the FR2 is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.

What bearing series does FR2 belong to?

The FR2 belongs to the MR Miniature Series within the Deep Groove Ball Bearings category.

Can NLHB supply FR2 equivalents from other brands?

Depending on the model and order requirements, NLHB may manufacture in-house or source through qualified partner factories. Interchange and supply route are confirmed against your specification before quotation. All trademarks belong to their respective owners.

How do I order FR2 from NLHB?

Click "Request Quote" and send us your quantity, application, and required specifications. We review the specification, supply route, lead time, and pricing before issuing a quotation. Response time depends on specification complexity.

What materials are available for FR2?

Material grade is confirmed per inquiry. Availability depends on the model, quantity, application, and whether the order is manufactured in-house or sourced through a qualified partner factory. Material certificates or inspection documents are confirmed before quotation when required.

Get a quote for FR2

Send us your quantity, application and target lead time. We confirm spec, interchange and realistic delivery — no order confirmed until you approve.

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FR2