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6300Deep Groove Ball Bearings

6318NR

d 90 × D 190 × B 43 mm

The 6318NR is a deep groove ball bearing with bore 90mm, outer diameter 190mm, and width 43mm rated for dynamic load 178.0 kN.

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6318NR — representative product photo
Representative product
6318NR · 90x190x43 mm

📋 Technical Specifications

Bore (d)
90mm
Outer Dia. (D)
190mm
Width (B)
43mm
Dynamic Load (Cr)
178.00 kN(178000 N)
Static Load (C0r)
107.00 kN(107000 N)
Reference Speed
3500rpm
Bearing typeDeep Groove Ball Bearings
Series6300
Seal typeOpen
MaterialConfirmed per inquiry — grade and certificate availability reviewed before quotation
Bore typeConfirmed per drawing
Dimension unitmillimeter (mm)

🔐 Model Code Breakdown

What each part of 6318NR means.

6
Type
3
Series
18
Bore
66 = Deep Groove Ball Bearing
33 = dimension-series code
1818 = bore code; nominal bore d = 90 mm

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)90
Outer diameter (D)190
Width (B)43

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

📑 Drawings & 3D Model

6318NR bearing dimension drawing, 90 x 190 x 43 mm
6318NR dimension drawing: bore d 90 mm × outer diameter D 190 mm × width B 43 mm. Tolerance class ABEC-1 (P0). Internal design is shown schematically. Snap ring groove per ISO 464: groove Ø D1 183.385 mm, 5.565 mm from the side face, 3.65 mm wide. Snap ring Ø D2 202.9 mm.
📑
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
3,500 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 90x190x43 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.

ModelRelationshipSeriesSealAction
6318Same boundary dimensions — verify fit/load63OpenQuote →
6318 2RSSame boundary dimensions — verify fit/load63SealedQuote →
6318NSame boundary dimensions — verify fit/load6300OpenQuote →
6318ZZSame boundary dimensions — verify fit/load63ShieldedQuote →
7318Same boundary dimensions — verify fit/load73 SeriesOpenQuote →
BL318Same boundary dimensions — verify fit/loadFull-Complement Deep Groove Ball BearingsOpenQuote →
BL318ZZSame boundary dimensions — verify fit/loadFull-Complement Deep Groove Ball BearingsOpenQuote →

⚙ 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 6318NR?
The 6318NR bearing has bore (d) = 90 mm, outer diameter (D) = 190 mm, and width (B) = 43 mm.
Is there a 6318NR drawing or CAD file?
Yes. The 6318NR 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 6318NR?
Dynamic load rating (Cr) = 178.00 kN (178000 N), static load rating (C0r) = 107.00 kN.
What tolerance class is the 6318NR?
The standard tolerance class of the 6318NR is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.
What bearing series does 6318NR belong to?
The 6318NR belongs to the 6300 within the Deep Groove Ball Bearings category.
Can NLHB supply 6318NR 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 6318NR 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 6318NR?
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.

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