6300Deep Groove Ball Bearingscross-ref: NSK

634

d 4 × D 16 × B 5 mm

The 634 is a deep groove ball bearing with bore 4mm, outer diameter 16mm, and width 5mm rated for dynamic load 1.3 kN.

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634 — representative product photo — Representative product

634 · 4x16x5 mm

📋 Technical Specifications

Bore (d)

4mm

Outer Dia. (D)

16mm

Width (B)

5mm

Dynamic Load (Cr)

1.30 kN(1300 N)

Static Load (C0r)

0.52 kN(520 N)

Reference Speed

46000rpm

Bearing type	Deep Groove Ball Bearings
Series	6300
Seal type	Open
Material	Confirmed per inquiry — grade and certificate availability reviewed before quotation
Bore type	Confirmed per drawing
Dimension unit	millimeter (mm)

📋 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	634 ZZ	General dust protection	Quote →
Double contact rubber seals	634 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	634 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	634 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	4
Outer diameter (D)	16
Width (B)	5

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

📑 Drawings & 3D Model

📑

2D Drawing

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📅

3D STEP Model

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🔎

CAD File

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Drawings and 3D models are provided per inquiry. Tell us your application and we will send the appropriate file format (DXF, DWG, STEP, IGES).

⚡ Source-Data Reference Speed

Catalog reference

46,000 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 4x16x5 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
-02 (WR16-A)	Same boundary dimensions — verify fit/load	WR / International Series	Open	Quote →
-04 (WR16-B)	Same boundary dimensions — verify fit/load	WR / International Series	Open	Quote →
-05 (WR16-C)	Same boundary dimensions — verify fit/load	WR / International Series	Open	Quote →
-07 (WR16-D)	Same boundary dimensions — verify fit/load	WR / International Series	Open	Quote →
30.M.14.078-02	Same boundary dimensions — verify fit/load	V-Groove / U-Groove	Open	Quote →
30.M.14.078-04	Same boundary dimensions — verify fit/load	V-Groove / U-Groove	Open	Quote →
30.M.14.078-07	Same boundary dimensions — verify fit/load	V-Groove / U-Groove	Open	Quote →
30.M.14.078-08	Same boundary dimensions — verify fit/load	V-Groove / U-Groove	Open	Quote →
420-M.294.012/1-01	Same boundary dimensions — verify fit/load	V-Groove / U-Groove	Open	Quote →
634 2rs	Configuration variant	Metric Miniature Series	Sealed	Quote →
634 ZZ	Configuration variant	Extra Small / Miniature Deep Groove Ball Bearing	Metal Shields	Quote →
634zz	Configuration variant	Metric Miniature Series	Shielded	Quote →
634ZZ1	Same boundary dimensions — verify fit/load	6300	Metal Shields	Quote →
E4	Same boundary dimensions — verify fit/load	Radials	Open	Quote →
EN4	Same boundary dimensions — verify fit/load	Radials	Open	Quote →
F634	Different outer-ring feature	Standard Flanged Bearings	Sealed	Quote →
F634 2rs	Different outer-ring feature	F634	Sealed	Quote →
F634 ZZ	Different outer-ring feature	F634	Metal Shields	Quote →
F634zz	Different outer-ring feature	F634	Shielded	Quote →
F634ZZ1	Different outer-ring feature	Standard Flanged Bearings	Open	Quote →
SF634	Same boundary dimensions — verify fit/load	F634	Open	Quote →
SF634 2rs	Same boundary dimensions — verify fit/load	F634	Sealed	Quote →
SF634zz	Same boundary dimensions — verify fit/load	F634	Shielded	Quote →

⚙ 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 →

4,315

Catalog Models

15+

Years

RFQ

Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of 634?

The 634 bearing has bore (d) = 4 mm, outer diameter (D) = 16 mm, and width (B) = 5 mm.

What is the load rating of 634?

Dynamic load rating (Cr) = 1.30 kN (1300 N), static load rating (C0r) = 0.52 kN.

What bearing series does 634 belong to?

The 634 belongs to the 6300 within the Deep Groove Ball Bearings category.

Can NLHB supply 634 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 634 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 634?

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 634

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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634