Deep groove ball bearing Koyo 6004R
- Brand
- KOYO
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding KOYO 6004R
- 60Series
- Deep groove ball bearings, 60 series. Series differ in outside diameter and width even when the bore is the same.
- 04Bore
- Bore 20 mm (04 × 5).
- RSuffix
- KOYO suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6004 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
KOYO 6004R measures 20 mm across the bore and 42 mm across the outside diameter; its width is 12 mm (20 x 42 x 12 mm).
KOYO 6004R belongs to deep groove ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6004R and any equivalents.
KOYO R series deep groove ball bearings are single-row components that handle radial and axial loads in both directions. You will find them in electric motors, pumps, fans, gearboxes and other industrial drives. MR Industrial Accessories LLC supplies this line to customers throughout the United States and Latin America. To request a quote, just send the part number via WhatsApp or email.
The R series code combines a diameter series and a size number, followed by the letter R. Take 6004R, 6204R, 6205R, 6206R, 6207R, 6210R, 6303R and 6304R: the first two digits (60, 62 or 63) set the diameter series, the next digits indicate the size, and the final R denotes a KOYO-specific execution. Use the bore, outer diameter and width shown in the designation to confirm the fit.
Typical applications include electric motors, centrifugal pumps, fans, compressors, conveyor belts and machine tools. In food, textile, chemical and material processing plants, these bearings are a common sight. Their sealed or shielded variants make them suitable for areas with moderate dust or moisture. For equipment that runs continuously, the KOYO R series is a dependable choice.
Sealing type is a key decision: open, shielded (2RZ) or sealed (2RS). Also check that internal clearance and lubrication match your operating speed and temperature. During mounting, align shaft and housing carefully, and avoid impacts that could damage the raceways. Proper lubrication and precise fitting help extend bearing service life.
When replacing a bearing, you may find that SKF, FAG, NSK, NTN and other brands share the same dimensions for similar designations. If you have a code from another manufacturer, send it to us and we will identify the equivalent KOYO reference. We can also help if the part has no visible identification.
To get a quote for KOYO R series bearings, message us on WhatsApp with the complete code or the dimensions. The team at MR Industrial Accessories LLC will assist you in selecting the right component for your equipment. Send your inquiry and we will respond promptly.
Dimensions
20 x 42 x 12 mm (d x D x B): boundary dimensions for basic designation 6004, according to ISO 15.
- Bore
- 20mm
- Outside diameter (D)
- 42mm
- Width (B)
- 12mm
SKF and other brands, same size
Other brands' pages with basic designation 6004: 20 x 42 x 12 mm (d x D x B) per ISO 15.
- Need the SKF 6004? We can also quote:60046004-Z6004-2Z30 more →
- FAG6004-C6004-C-2Z6004-C-2HRS
- NSK60046004 ZZ
- RKB6004
- TIMKEN6004
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- KOYO 6004R bearing: what are its dimensions?
- KOYO 6004R measures 20 mm across the bore and 42 mm across the outside diameter; its width is 12 mm (20 x 42 x 12 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6004.
- What does the R suffix mean in KOYO bearings?
- The final letter R indicates a specific execution within the KOYO deep groove ball bearing series. For exact details on a reference like 6204R, contact us with the full code and we will provide the information.
- How do I choose between an open and a sealed bearing?
- If the environment contains dust, moisture or particles, a bearing with seals or shields is recommended. For clean, high-speed applications, an open bearing may be suitable. Tell us where it is mounted and we will guide you.
- Do you have cross-references with other brands?
- Yes, many brands share dimensions for similar designations. If you send us another brand's code, we will indicate the equivalent KOYO reference. We can also identify the part if it has no visible number.