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Inch R / 1600 SeriesDeep Groove Ball Bearings

R3

d 4.763 × D 12.7 × B 3.969 mm

The R3 is a deep groove ball bearing with bore 4.763mm, outer diameter 12.7mm, and width 3.969mm rated for dynamic load 0.9 kN.

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R3 — representative product photo
Representative product
R3 · 4.763x12.7x3.969 mm

📋 Technical Specifications

Bore (d)
4.763mm
Outer Dia. (D)
12.7mm
Width (B)
3.969mm
Dynamic Load (Cr)
0.89 kN(890 N)
Static Load (C0r)
0.42 kN(420 N)
Reference Speed
43000rpm
Bearing typeDeep Groove Ball Bearings
SeriesInch R / 1600 Series
Seal typeOpen
MaterialConfirmed per inquiry — grade and certificate availability reviewed before quotation
Bore typeConfirmed per drawing
Dimension unitmillimeter (mm)

📋 Nominal Variants by Seal Type

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

Seal TypeModel CodeTypical Use
Double metal shieldsR3 ZZGeneral dust protectionQuote →
Double contact rubber sealsR3 2RS (inquiry only)Dust and moisture protection at moderate speedQuote →
Double non-contact rubber sealsR3 2RZ (inquiry only)Lower-friction sealing at higher speedQuote →
C3 radial clearanceR3 C3 (inquiry only)Motors and applications with higher operating temperatureQuote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)4.763
Outer diameter (D)12.7
Width (B)3.969

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

📑 Drawings & 3D Model

R3 bearing dimension drawing, 4.763 x 12.7 x 3.969 mm
R3 dimension drawing: bore d 4.763 mm × outer diameter D 12.7 mm × width B 3.969 mm. Tolerance class ABEC-1 (P0). Internal design is shown schematically.
📑
2D Drawing (PDF)
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📐
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
43,000 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 4.763x12.7x3.969 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.

No other catalog models share the same boundary dimensions.

🔄 Related Models

Same bearing family or similar dimensions.

Same model family — dimensions may differ
R3 2rs
4.762x12.7x4.978 mm
Inch R Series
B +1.0mm
R3 ZZ
4.762x12.7x4.978 mm
Extra Small / Miniature Deep Groove Ball Bearing Inch Series
B +1.0mm

⚙ 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 R3?
The R3 bearing has bore (d) = 4.763 mm, outer diameter (D) = 12.7 mm, and width (B) = 3.969 mm.
Is there a R3 drawing or CAD file?
Yes. The R3 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 R3?
Dynamic load rating (Cr) = 0.89 kN (890 N), static load rating (C0r) = 0.42 kN.
What tolerance class is the R3?
The standard tolerance class of the R3 is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.
What bearing series does R3 belong to?
The R3 belongs to the Inch R / 1600 Series within the Deep Groove Ball Bearings category.
Can NLHB supply R3 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 R3 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 R3?
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 R3

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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