79 SeriesAngular Contact Ball Bearings

7921

d 105 × D 145 × B 20 mm

The 7921 is a bearing with bore 105mm, outer diameter 145mm, and width 20mm rated for dynamic load 48.5 kN.

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7921 · 105x145x20 mm

📋 Technical Specifications

Bore (d)

105mm

Outer Dia. (D)

145mm

Width (B)

20mm

Dynamic Load (Cr)

48.50 kN(48500 N)

Static Load (C0r)

54.50 kN(54500 N)

Reference Speed

Confirm per inquiryrpm

Bearing type	Angular Contact Ball Bearings
Series	79 Series
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)

🔐 Model Code Breakdown

What each part of 7921 means.

Type

Series

Bore

7	7 = Angular Contact Ball Bearing
9	9 = dimension-series code
21	21 = bore code; nominal bore d = 105 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	7921 ZZ (inquiry only)	General dust protection	Quote →
Double contact rubber seals	7921 2RS (inquiry only)	Dust and moisture protection at moderate speed	Quote →
Double non-contact rubber seals	7921 2RZ (inquiry only)	Lower-friction sealing at higher speed	Quote →
C3 radial clearance	7921 C3 (inquiry only)	Motors and applications with higher operating temperature	Quote →

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	105
Outer diameter (D)	145
Width (B)	20

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).

⇄ Same-size Bearings & Reference Options

The models below share the 105x145x20 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
H71921AC	Same boundary dimensions — verify fit/load	H Series	Open	Quote →
H71921AC/HQ1	Same boundary dimensions — verify fit/load	H Series	Open	Quote →
H71921C	Same boundary dimensions — verify fit/load	H Series	Open	Quote →
H71921C/HQ1	Same boundary dimensions — verify fit/load	H Series	Open	Quote →

⚙ Typical Applications

Industrial machinery

Material handling

General engineering

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

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❓ Frequently Asked Questions

What are the dimensions of 7921?

The 7921 bearing has bore (d) = 105 mm, outer diameter (D) = 145 mm, and width (B) = 20 mm.

What is the load rating of 7921?

Dynamic load rating (Cr) = 48.50 kN (48500 N), static load rating (C0r) = 54.50 kN.

What bearing series does 7921 belong to?

The 7921 belongs to the 79 Series within the Angular Contact Ball Bearings category.

Can NLHB supply 7921 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 7921 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 7921?

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 7921

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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