3900Double-Row Angular Contact Ball Bearings

3909

d 45 × D 68 × B 16 mm

The 3909 is a double-row angular contact ball bearing with bore 45mm, outer diameter 68mm, and width 16mm rated for dynamic load 17.9 kN.

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3909 — representative product photo — Representative product

3909 · 45x68x16 mm

📋 Technical Specifications

Bore (d)

45mm

Outer Dia. (D)

68mm

Width (B)

16mm

Dynamic Load (Cr)

17.90 kN(17900 N)

Static Load (C0r)

17.20 kN(17200 N)

Reference Speed

6000rpm

Bearing type	Double-Row Angular Contact Ball Bearings
Series	3900
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	3909 ZZ (inquiry only)	General dust protection	Quote →
Double contact rubber seals	3909 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	3909 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	3909 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	45
Outer diameter (D)	68
Width (B)	16

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

6,000 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 45x68x16 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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Catalog Models

15+

Years

RFQ

Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of 3909?

The 3909 bearing has bore (d) = 45 mm, outer diameter (D) = 68 mm, and width (B) = 16 mm.

What is the load rating of 3909?

Dynamic load rating (Cr) = 17.90 kN (17900 N), static load rating (C0r) = 17.20 kN.

What bearing series does 3909 belong to?

The 3909 belongs to the 3900 within the Double-Row Angular Contact Ball Bearings category.

Can NLHB supply 3909 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 3909 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 3909?

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 3909

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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