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SMF74Deep Groove Ball BearingsShielded

SMF74zz

d 4 × D 7 × B 2.5 mm

The SMF74zz is a deep groove ball bearing with bore 4mm, outer diameter 7mm, and width 2.5mm rated for dynamic load 0.2 kN.

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NOMINAL DIMENSION DRAWINGD = 7 mmd = 4 mmB = 2.5 mmNLHB BEARINGSSMF74zz4 × 7 × 2.5 mmNOMINAL DIMENSIONS • TOLERANCE AND SUPPLY CONFIRMED PER INQUIRY
SMF74zz · 4x7x2.5 mm

📋 Technical Specifications

Bore (d)
4mm
Outer Dia. (D)
7mm
Width (B)
2.5mm
Dynamic Load (Cr)
0.20 kN(196 N)
Static Load (C0r)
0.08 kN(76 N)
Reference Speed
54000rpm
Bearing typeDeep Groove Ball Bearings
SeriesSMF74
Seal typeShielded
MaterialConfirmed per inquiry — grade and certificate availability reviewed before quotation
Bore typeConfirmed per drawing
Dimension unitmillimeter (mm)

🔐 Model Code Breakdown

What each part of SMF74zz means.

SMF
Super Mini Flange
SMFSMF = super-miniature flange

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)4
Outer diameter (D)7
Width (B)2.5

Corner radius, shoulder dimensions, fits and tolerances are confirmed against the requested suffix and application drawing before quotation.

📑 Drawings & 3D Model

SMF74zz bearing dimension drawing, 4 x 7 x 2.5 mm
SMF74zz dimension drawing: bore d 4 mm × outer diameter D 7 mm × width B 2.5 mm. Tolerance class ABEC-1 (P0). Internal design is shown schematically. Flange Ø Df 8.2 mm, flange width Bf 0.6 mm.
📑
2D Drawing (PDF)
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📐
2D DXF File
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📅
3D STEP Model
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The PDF drawing is free to download. DXF and 3D STEP files are sent on request: tell us the model and your application, and we reply with the CAD files.

⚡ Source-Data Reference Speed

Catalog reference
54,000 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 4x7x2.5 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.

ModelRelationshipSeriesSealAction
MF74Different outer-ring featureExtended Inner-Ring Flanged BearingsShieldedQuote →
MF74 2rsSame boundary dimensions — verify fit/loadMF74SealedQuote →
MF74 ZZSame boundary dimensions — verify fit/loadMF74Metal ShieldsQuote →
MR74 2rsSame boundary dimensions — verify fit/loadMRSealedQuote →
MR74 ZZSame boundary dimensions — verify fit/loadMRMetal ShieldsQuote →
SMF74Configuration variantExtended Inner-Ring Flanged BearingsSealedQuote →
SMF74 2rsConfiguration variantSMF74SealedQuote →

🔄 Related Models

Same bearing family or similar dimensions.

Similar size — reference only, verify all interfaces
MR74
4x7x2 mm
MR Miniature Series
B -0.5mm

⚙ 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.

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4,300+
Models
15+
Years
RFQ
Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of SMF74zz?
The SMF74zz bearing has bore (d) = 4 mm, outer diameter (D) = 7 mm, and width (B) = 2.5 mm.
Is there a SMF74zz drawing or CAD file?
Yes. The SMF74zz dimension drawing (PDF) is free to download on this page. DXF and 3D STEP files are sent on request: tell us the model and your application.
What is the load rating of SMF74zz?
Dynamic load rating (Cr) = 0.20 kN (196 N), static load rating (C0r) = 0.08 kN.
What tolerance class is the SMF74zz?
The standard tolerance class of the SMF74zz is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.
What bearing series does SMF74zz belong to?
The SMF74zz belongs to the SMF74 within the Deep Groove Ball Bearings category.
Can NLHB supply SMF74zz 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 SMF74zz 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 SMF74zz?
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 SMF74zz

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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