6300Deep Groove Ball Bearings

6311N

d 55 × D 120 × B 29 mm

The 6311N is a deep groove ball bearing with bore 55mm, outer diameter 120mm, and width 29mm rated for dynamic load 89.5 kN.

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6311N — representative product photo — Representative product

6311N · 55x120x29 mm

📋 Technical Specifications

Bore (d)

55mm

Outer Dia. (D)

120mm

Width (B)

29mm

Dynamic Load (Cr)

89.50 kN(89500 N)

Static Load (C0r)

36.20 kN(36200 N)

Reference Speed

5700rpm

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)

🔐 Model Code Breakdown

What each part of 6311N means.

Type

Series

Bore

6	6 = Deep Groove Ball Bearing
3	3 = dimension-series code
11	11 = bore code; nominal bore d = 55 mm

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	55
Outer diameter (D)	120
Width (B)	29

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

5,700 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 55x120x29 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
6311	Same boundary dimensions — verify fit/load	6300	Open	Quote →
6311 2RS	Same boundary dimensions — verify fit/load	6300	Rubber Seals	Quote →
6311 2RZ	Same boundary dimensions — verify fit/load	6300	Rubber Seals	Quote →
6311 ZZ	Same boundary dimensions — verify fit/load	6300	Metal Shields	Quote →
6311NR	Same boundary dimensions — verify fit/load	6300	Open	Quote →
7311	Same boundary dimensions — verify fit/load	73 Series	Open	Quote →
BL311	Same boundary dimensions — verify fit/load	Full-Complement Deep Groove Ball Bearings	Open	Quote →
BL311ZZ	Same boundary dimensions — verify fit/load	Full-Complement Deep Groove Ball Bearings	Open	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 6311N?

The 6311N bearing has bore (d) = 55 mm, outer diameter (D) = 120 mm, and width (B) = 29 mm.

What is the load rating of 6311N?

Dynamic load rating (Cr) = 89.50 kN (89500 N), static load rating (C0r) = 36.20 kN.

What bearing series does 6311N belong to?

The 6311N belongs to the 6300 within the Deep Groove Ball Bearings category.

Can NLHB supply 6311N 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 6311N 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 6311N?

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 6311N

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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