RKB 61804 deep groove ball bearing
- Brand
- RKB
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
SKF and RKB: matching part numbers →FAG and RKB: matching part numbers →TIMKEN and RKB: matching part numbers →
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Decoding RKB 61804
- 618Series
- Deep groove ball bearings, 618 series. Series differ in outside diameter and width even when the bore is the same.
- 04Bore
- Bore 20 mm (04 × 5).
61804 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
RKB 61804 measures 20 mm across the bore and 32 mm across the outside diameter; its width is 7 mm (20 x 32 x 7 mm).
RKB 61804 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 61804 and any equivalents.
RKB 60/ series deep groove ball bearings are single-row components that handle radial and axial loads in both directions. They suit equipment that demands high rotational precision and low friction, including machine tools, pumps and gearboxes. We supply this line for applications with large shaft diameters that run continuously.
The 60/ designation tells you two things: the 60 indicates a deep groove ball bearing in the 60 diameter series, and the number after the slash is the bore diameter in millimeters. So a 60/500 has a 500 mm bore, while a 60/750 has a 750 mm bore. This makes it easy to match the bearing to the shaft size. Suffixes for cage, sealing or internal clearance are confirmed when you send your inquiry.
These bearings appear in cement, mining, steel and power generation plants, in equipment such as mills, crushers, induced draft fans, high-flow centrifugal pumps and heavy machine tools. They are also found in speed reducers and rotary kiln rollers. Their capacity for combined loads at moderate speeds makes them a fit for continuous process service.
Selection depends on radial and axial load, speed and the operating environment. In dusty or humid conditions, consider sealed or shielded variants. Mount with the right tools and avoid striking the balls or raceway directly. Proper alignment between shaft and housing prevents parasitic loads. Choose grease or oil lubrication based on temperature and speed.
Interchange with other brands is common when the type, diameter series and bore match. Internal clearance, cage and sealing can differ, so confirm those details. If you have a code from another manufacturer, send it to us and we will identify the equivalent RKB reference or the best option for your equipment.
We supply the RKB 60/ series deep groove ball bearings. To request a quote, send the part number by WhatsApp or email and our team will reply promptly. We can also suggest equivalents and help you choose the right variant for your application.
Dimensions
20 x 32 x 7 mm (d x D x B): boundary dimensions for basic designation 61804, according to ISO 15.
- Bore
- 20mm
- Outside diameter (D)
- 32mm
- Width (B)
- 7mm
SKF and other brands, same size
Other brands' pages with basic designation 61804: 20 x 32 x 7 mm (d x D x B) per ISO 15.
- Need the SKF 61804? We can also quote:6180461804-2RZ61804-2RS1
- FAG6180461804-2Z61804-2RSR
- TIMKEN61804
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
- RKB 61804 bearing: what are its dimensions?
- RKB 61804 measures 20 mm across the bore and 32 mm across the outside diameter; its width is 7 mm (20 x 32 x 7 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 61804.
- What does the 60/500 designation mean?
- The 60 prefix indicates a deep groove ball bearing of the 60 diameter series. The number 500 after the slash is the bore diameter in millimeters, so a 60/500 has a 500 mm bore. This naming is used for large shaft diameters.
- Where are these bearings used in US industry?
- They are found in mills, crushers, high-flow pumps, industrial fans, gearboxes and heavy machine tools. Industries such as cement, mining, steel and energy rely on them for combined load capacity and continuous operation.
- How do I request a quote for an RKB 60/ series bearing?
- Send us the full code or the size you need on WhatsApp or by email. We will quote it promptly. If you have another brand's code, we can also provide the equivalent reference.