NSK 6304 DU Deep Groove Ball Bearing - 20 mm ID, 52 mm OD, 15 mm Width, Cylindrical Bore, Normal
- d 20 mm
- D 52 mm
- B 15 mm
- Single Rubber Seal
- C0 - Normal
Genuine NSK product, NSK
- Regular price
- $14.92
- Sale price
- $14.92
- Regular price
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Same-day shipping
Order by 3 PM ET for same-day shipping
Free shipping on orders over $100
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NSK 6304 DU
$14.92
Why Apollo USA
Bearings from Apollo Industries, Oxford, Michigan
Apollo Industries supplies bearings, seals and maintenance tools to businesses across the US, with real people on the phone when you need a part matched.
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Same-day shipping
Order by 3 PM EST for same-day shipping.
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Free shipping over $100
All orders over $100 ship free by ground with code FREESHIP.
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90-day returns
Hassle-free returns on unused items within 90 days.
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Price match
Show us a competitor's advertised price on the same item and we will match it.
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Expert support
Support staff available by phone, web chat or email.
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We offer special rates for businesses and bulk orders.
Talk to a bearing specialist
2695 Lake George RdOxford, MI 48370
Overview
NSK 6304 DU Deep groove ball bearing
Deep Groove Ball Bearing sealed design
Deep Groove Ball Bearings are versatile and widely used bearings. They can accommodate radial loads and, to a lesser extent, axial loads in both directions. Known for their low friction and quiet operation. The sealed design provides protection against contamination. Manufactured to precision tolerance class for demanding applications. Robust steel cage construction ensures durability. Suitable for use in a wide range of industrial applications where reliability and performance are essential.
Key features
- Versatile and reliable performance
- Optimized for moderate to high loads
- Protected against contamination
- Robust steel cage construction
- Precision tolerance class
Specifications
NSK 6304 DU dimensions & specifications
- Bearing type
- Deep groove ball bearing
- Bore diameter d
- 20 mm (0.787 in)
- Outside diameter D
- 52 mm (2.047 in)
- Width B
- 15 mm (0.591 in)
- Seals / shields
- Single Rubber Seal
- Internal clearance
- C0 - Normal
- Weight
- 0.32 lb
- Brand
- NSK
- Part number
- 6304 DU also written 6304DU
All specifications
Dimensions
| Bore Diameter | 20 mm |
| Outside Diameter | 52 mm |
| Width | 15 mm |
Properties
| Ball rows | Single row bearing |
| Bore | Cylindrical bore |
| Cage | Sheet steel cage |
| Clearance | Normal radial clearance |
| Current insulation | No current insulation |
| Material | Standard bearing steel |
| Material of rolling elements | Standard bearing steel |
| Outer ring | Without flange/groove |
| Seal | Contact seal on one side |
| Temperature range | -20 to +120 °C |
| Tolerance class | Tolerance class P0/PN2 / ABEC 1 |
Logistics
| Product Net Weight | 0.145 |
Cross reference
6304 DU cross reference & equivalents
Bearings from other brands with the same boundary dimensions. Check seals, clearance, cage and precision class before you order.
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FAG
6304-C-HRSFAG 6304 -C-HRS Deep Groove Ball Bearing - 20 mm ID, 52 mm OD, 15 mm Width, Cylindrical Bore, Normal
- Same size
- Same seals
- Same clearance
$20.20
In stock
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Timken
6304-RSTimken 6304-RS Single Row Deep Groove Ball Bearing, Metric Series, 20.0mm Bore, 52.0mm OD, 15.0mm Width, Single Sealed, Cylindrical Bore, Steel Cage, C0 (Normal) Clearance, ISO P0 Tolerance
- Same size
- Same seals
- Same clearance
$22.07
Call for availability -
Consolidated
6304-RS
Contact seal one side
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SKF
6304-RS1
Contact seal one side
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NTN
6304LU
Contact seal one side
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Koyo
6304RS
Contact seal one side
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Nachi
6304-NSE
Contact seal one side
Reference data only. Verify specifications before you order.
Search more equivalents in the Apollo Bearing IndexTools & lubrication
Complete the job for your 6304 DU
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Part number decoded
What every part of 6304 DU means
- 63
- 63xx medium deep groove ball (dimension series 03)
- 04
- Bore code 04 × 5 = 20 mm (ISO convention)
- DU
- Contact rubber seal on one side
Catalogs & documents
NSK 6304 DU catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Catalog
NSK Rolling Bearings for Industrial Machinery (opens in a new tab)
PDF · 299 MB · English
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Interchange
NSK Bearing and Linear Replacement Guide (opens in a new tab)
PDF · 16 MB · English
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Catalog
NSK Deep Groove Ball Bearings (opens in a new tab)
PDF · 4 MB · English
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Catalog
NSK Ball Bearing Units (opens in a new tab)
PDF · 12 MB · English
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Mounting
NSK Bearing Doctor: Handling, Maintenance and Troubleshooting (opens in a new tab)
PDF · 18 MB · English
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Technical
NSK Internal Clearance: Types and Norms (opens in a new tab)
PDF · 559 KB · English
About the brand
About NSK
Japan's first bearing maker, since 1916.
NSK was founded in Tokyo on 8 November 1916 and mass-produced bearings in its founding year, a first in Japan. In 1918 it built Japan's first large thrust bearings. NSK Americas was founded in 1997.
Genuine NSK product
Founded
1916
Headquarters
Tokyo, Japan
Known for
- Deep groove ball bearings
- NSKHPS spherical and cylindrical roller bearings
- Super precision bearings
- Linear guides
Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of NSK. All NSK trademarks and product names are the property of their respective owners. We sell genuine NSK products purchased through independent channels.
FAQ
6304 DU questions & answers
What are the dimensions of the NSK 6304 DU?
The NSK 6304 DU has a 20 mm bore (d), a 52 mm outside diameter (D) and a 15 mm width (B). In inches: 0.787 × 2.047 × 0.591 in.
What type of bearing is the 6304 DU?
The NSK 6304 DU is a deep groove ball bearing.
Is the 6304 DU sealed or shielded?
The NSK 6304 DU is sealed: Single Rubber Seal.
What internal clearance does the 6304 DU have?
The NSK 6304 DU has C0 - Normal internal clearance.
What can I use instead of the NSK 6304 DU?
Equivalents with the same boundary dimensions include FAG 6304-C-HRS, Timken 6304-RS, Consolidated 6304-RS, SKF 6304-RS1, NTN 6304LU, Koyo 6304RS. Check the seals, internal clearance, cage and precision class before you order.
Is this a genuine NSK bearing?
Yes. Apollo Industries sells genuine NSK products, purchased through independent channels. Apollo is not an authorized distributor, reseller, or representative of NSK.
Do you ship the 6304 DU the same day?
In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.
Can I get quantity pricing or buy tax-exempt?
Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.
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