NLHB BEARINGS
Request Quote
Home/Products/6300/638 2RS
6300Deep Groove Ball BearingsRubber Seals

638 2RS

d 8 × D 28 × B 9 mm

The 638 2RS is a deep groove ball bearing with bore 8mm, outer diameter 28mm, and width 9mm rated for dynamic load 4.5 kN.

Request Quote for 638 2RSSearch Similar
638 2RS — representative product photo
Representative product
638 2RS · 8x28x9 mm

📋 Technical Specifications

Bore (d)
8mm
Outer Dia. (D)
28mm
Width (B)
9mm
Dynamic Load (Cr)
4.55 kN(4550 N)
Static Load (C0r)
1.97 kN(1970 N)
Reference Speed
22000rpm
Bearing typeDeep Groove Ball Bearings
Series6300
Seal typeRubber Seals
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
Open638High speed in clean environmentsQuote →
Double metal shields638 ZZGeneral dust protectionQuote →
Double non-contact rubber seals638 2RZLower-friction sealing at higher speedQuote →
C3 radial clearance638 C3 (inquiry only)Motors and applications with higher operating temperatureQuote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)8
Outer diameter (D)28
Width (B)9

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

📑 Drawings & 3D Model

638 2RS bearing dimension drawing, 8 x 28 x 9 mm
638 2RS dimension drawing: bore d 8 mm × outer diameter D 28 mm × width B 9 mm. Tolerance class ABEC-1 (P0). Internal design is shown schematically.
📑
2D Drawing (PDF)
Download PDF →
📐
2D DXF File
Request DXF →
📅
3D STEP Model
Request STEP →

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
22,000 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 8x28x9 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
638Configuration variant6300OpenQuote →
638 2RZConfiguration variant6300Rubber SealsQuote →
638 ZZConfiguration variantExtra Small / Miniature Deep Groove Ball BearingMetal ShieldsQuote →
638DDConfiguration variant6300OpenQuote →
638VVConfiguration variant6300OpenQuote →
638ZZ1Same boundary dimensions — verify fit/load6300Metal ShieldsQuote →

⚙ 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 638 2RS?
The 638 2RS bearing has bore (d) = 8 mm, outer diameter (D) = 28 mm, and width (B) = 9 mm.
Is there a 638 2RS drawing or CAD file?
Yes. The 638 2RS 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 638 2RS?
Dynamic load rating (Cr) = 4.55 kN (4550 N), static load rating (C0r) = 1.97 kN.
What tolerance class is the 638 2RS?
The standard tolerance class of the 638 2RS is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.
What bearing series does 638 2RS belong to?
The 638 2RS belongs to the 6300 within the Deep Groove Ball Bearings category.
Can NLHB supply 638 2RS 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 638 2RS 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 638 2RS?
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 638 2RS

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

Request Quote →
Inquiry List 0

Your Inquiry List

Submit All as Quote →