Extra Small / Miniature Deep Groove Ball Bearing Inch SeriesDeep Groove Ball BearingsMetal Shields

R188 ZZ

d 6.35 × D 12.7 × B 4.762 mm

The R188 ZZ is a deep groove ball bearing with bore 6.35mm, outer diameter 12.7mm, and width 4.762mm rated for dynamic load 1.1 kN.

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R188 ZZ · 6.35x12.7x4.762 mm

📋 Technical Specifications

Bore (d)

6.35mm

Outer Dia. (D)

12.7mm

Width (B)

4.762mm

Dynamic Load (Cr)

1.08 kN(1080 N)

Static Load (C0r)

0.44 kN(440 N)

Reference Speed

40000rpm

Bearing type	Deep Groove Ball Bearings
Series	Extra Small / Miniature Deep Groove Ball Bearing Inch Series
Seal type	Metal Shields
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
Open	R188	High speed in clean environments	Quote →
Double contact rubber seals	R188 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	R188 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	R188 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	6.35
Outer diameter (D)	12.7
Width (B)	4.762

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

Request STEP →

🔎

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

40,000 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 6.35x12.7x4.762 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
FR188ZZ	Same boundary dimensions — verify fit/load	MR Miniature Series	Shielded	Quote →
R188 2rs	Configuration variant	Inch R Series	Sealed	Quote →
R188ZZ	Configuration variant	MR Miniature Series	Metal Shields	Quote →
RW188zz	Same boundary dimensions — verify fit/load	Inch RW Series	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 R188 ZZ?

The R188 ZZ bearing has bore (d) = 6.35 mm, outer diameter (D) = 12.7 mm, and width (B) = 4.762 mm.

What is the load rating of R188 ZZ?

Dynamic load rating (Cr) = 1.08 kN (1080 N), static load rating (C0r) = 0.44 kN.

What bearing series does R188 ZZ belong to?

The R188 ZZ belongs to the Extra Small / Miniature Deep Groove Ball Bearing Inch Series within the Deep Groove Ball Bearings category.

Can NLHB supply R188 ZZ 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 R188 ZZ 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 R188 ZZ?

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 R188 ZZ

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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