NSK
20
20 × 42 × 12 mm
Load C
9.4 kN
Speed
18,000
Weight
0.07 kg

The NSK 6004DDU is a small size deep groove ball bearings with ISO dimensions 20×42×12 mm. Bearings in the 20mm bore range are commonly used in electric motors 0.37-5.5kW, water pumps, industrial fans, light conveyors (0.37-5.5kW range). This is an double sealed (2RS), maintenance-free lubrication, ideal for harsh environments variant. NSK Japan — precision bearing specialist, CNC spindles and high-speed bearings — 6 equivalent brands available under ISO designation 6004.

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NSK 6004DDU

Deep Groove Ball Bearings20×42×12 mm — ISO 6004

Dimensions
Bore Diameter (d)20 mm
Outside Diameter (D)42 mm
Width (B)12 mm
Dynamic Load Rating (C)9.4 kN
Static Load Rating (C₀)5 kN
Limiting Speed (grease)18,000 rpm
Mass0.07 kg
Seal TypeDouble Sealed
ClearanceCN
Precision ClassP0
Genuine NSK2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NSK 6004DDU per OEM catalog.

Bore Diameter (d)20 mm
Outside Diameter (D)42 mm
Width (B)12 mm
Dynamic Load Rating (C)9.4 kN
Static Load Rating (C₀)5 kN
Limiting Speed (grease)18,000 rpm
Mass0.07 kg
Seal TypeDouble Sealed
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 6004 — interchangeable dimensions.

BrandPart Number
NSK6004DDU
fag6004-2RSR
ntn6004LLU
skf6004-2RS1
zvl6004-2RSR
koyo60042RS
nachi60042NSLE
timken6004-2RS

* C/C₀ may vary ±5% across manufacturers.

Compare 6004 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NSK6004DDU20×42×129.45Current
NSK6004ZZ20×42×129.4View
FAG600420×42×129.5View
FAG6004-2RSR20×42×129.5View
FAG6004-2Z20×42×129.5View
Koyo600420×42×129.2View
Koyo60042RS20×42×129.2View
Koyo6004ZZ20×42×129.2View
NACHI600420×42×129.3View

FAQ — NSK 6004DDU

Quick answers to common questions.

NSK 6004DDU có kích thước d×D×B = 20×42×12 mm theo tiêu chuẩn ISO. Đường kính trong d = 20 mm, đường kính ngoài D = 42 mm, chiều rộng B = 12 mm.

Common Applications

ManufacturingHVAC

Deep Groove Ball Bearings with 20mm bore diameter are commonly used in electric motors 0.37-5.5kW, water pumps, industrial fans, light conveyors (0.37-5.5kW range).

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NSK 6004DDU
20×42×12 mm
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