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MRDeep Groove Ball BearingsMetal Shields

MR74 ZZ

d 4 × D 7 × B 2.5 mm

The MR74 ZZ is a deep groove ball bearing with bore 4mm, outer diameter 7mm, and width 2.5mm rated for dynamic load 0.3 kN.

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NOMINAL DIMENSION DRAWINGD = 7 mmd = 4 mmB = 2.5 mmNLHB BEARINGSMR74 ZZ4 × 7 × 2.5 mmNOMINAL DIMENSIONS • TOLERANCE AND SUPPLY CONFIRMED PER INQUIRY
MR74 ZZ · 4x7x2.5 mm

📋 Technical Specifications

Bore (d)
4mm
Outer Dia. (D)
7mm
Width (B)
2.5mm
Dynamic Load (Cr)
0.26 kN(255 N)
Static Load (C0r)
0.11 kN(107 N)
Reference Speed
71000rpm
Bearing typeDeep Groove Ball Bearings
SeriesMR
Seal typeMetal Shields
MaterialConfirmed per inquiry — grade and certificate availability reviewed before quotation
Bore typeConfirmed per drawing
Dimension unitmillimeter (mm)

🔐 Model Code Breakdown

What each part of MR74 ZZ means.

MR
Miniature
MRMR = miniature bearing

📋 Nominal Variants by Seal Type

Catalog variants open a detail page. Inquiry-only configurations go directly to RFQ.

Seal TypeModel CodeTypical Use
OpenMR74High speed in clean environmentsQuote →
Double contact rubber sealsMR74 2RS (inquiry only)Dust and moisture protection at moderate speedQuote →
Double non-contact rubber sealsMR74 2RZ (inquiry only)Lower-friction sealing at higher speedQuote →
C3 radial clearanceMR74 C3 (inquiry only)Motors and applications with higher operating temperatureQuote →

📐 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

MR74 ZZ bearing dimension drawing, 4 x 7 x 2.5 mm
MR74 ZZ 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.
📑
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
71,000 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 2rsConfiguration variantMRSealedQuote →
SMF74Different outer-ring featureExtended Inner-Ring Flanged BearingsSealedQuote →
SMF74 2rsSame boundary dimensions — verify fit/loadSMF74SealedQuote →
SMF74zzSame boundary dimensions — verify fit/loadSMF74ShieldedQuote →

🔄 Related Models

Same bearing family or similar dimensions.

Same model family — dimensions may differ
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.

About NLHB →
4,300+
Models
15+
Years
RFQ
Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of MR74 ZZ?
The MR74 ZZ bearing has bore (d) = 4 mm, outer diameter (D) = 7 mm, and width (B) = 2.5 mm.
Is there a MR74 ZZ drawing or CAD file?
Yes. The MR74 ZZ 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 MR74 ZZ?
Dynamic load rating (Cr) = 0.26 kN (255 N), static load rating (C0r) = 0.11 kN.
What tolerance class is the MR74 ZZ?
The standard tolerance class of the MR74 ZZ is ABEC-1 (P0) per GB/T 307.1, unless otherwise agreed.
What bearing series does MR74 ZZ belong to?
The MR74 ZZ belongs to the MR within the Deep Groove Ball Bearings category.
Can NLHB supply MR74 ZZ 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 MR74 ZZ 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 MR74 ZZ?
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 MR74 ZZ

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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