4300Double-Row Angular Contact Ball Bearings

4308

d 40 × D 90 × B 33 mm

The 4308 is a double-row angular contact ball bearing with bore 40mm, outer diameter 90mm, and width 33mm rated for dynamic load 55.9 kN.

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4308 — representative product photo — Representative product

4308 · 40x90x33 mm

📋 Technical Specifications

Bore (d)

40mm

Outer Dia. (D)

90mm

Width (B)

33mm

Dynamic Load (Cr)

55.90 kN(55900 N)

Static Load (C0r)

45.00 kN(45000 N)

Reference Speed

4600rpm

Bearing type	Double-Row Angular Contact Ball Bearings
Series	4300
Seal type	Confirm per inquiry
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	4308 ZZ (inquiry only)	General dust protection	Quote →
Double contact rubber seals	4308 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	4308 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	4308 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	40
Outer diameter (D)	90
Width (B)	33

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

4,600 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 40x90x33 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.

⚙ Typical Applications

Pumps

Compressors

Gearboxes

Automotive wheels

Material handling

Textile 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.

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4,315

Catalog Models

15+

Years

RFQ

Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of 4308?

The 4308 bearing has bore (d) = 40 mm, outer diameter (D) = 90 mm, and width (B) = 33 mm.

What is the load rating of 4308?

Dynamic load rating (Cr) = 55.90 kN (55900 N), static load rating (C0r) = 45.00 kN.

What bearing series does 4308 belong to?

The 4308 belongs to the 4300 within the Double-Row Angular Contact Ball Bearings category.

Can NLHB supply 4308 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 4308 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 4308?

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 4308

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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