61804-ZZ-C3 Thin section deep groove ball bearing 20×32mm
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61804-ZZ-C3 Thin section deep groove ball bearing 20×32mm
A 0.016 kg Bearing With a 24,953 r/min Ceiling
At just 0.016 kg, the 61804-ZZ-C3 is light enough to disappear in a parts bin—yet its limiting speed rating reaches 24,953 r/min. That number matters because thin-section bearings are often chosen for compact, high-speed assemblies where heat, lubrication and cage stability decide service life. A buyer who checks only dimensions can miss the speed margin that makes this bearing suitable—or unsuitable—for the application.
At a glance
- Model: 61804-ZZ-C3
- Bore diameter (d): 20 mm
- Outside diameter (D): 32 mm
- Width (B): 7 mm
Use the 20,969 r/min reference speed and 24,953 r/min limiting speed as review points, not as a default operating target. Confirm the actual speed, lubrication method and thermal conditions with the design engineer before releasing a purchase order.
Cross-Check the 20×32×7 mm Envelope and Load Ratings
The 61804-ZZ-C3 sits in the Thin section deep groove ball bearings category, so the first check is the envelope: 20 mm bore, 32 mm outside diameter and 7 mm width. The radial load ratings are modest but useful for sizing: 3,915 N dynamic and 2,435 N static. Do not substitute a wider or heavier bearing without checking shaft and housing shoulders, axial space and preload effects.
| Model | 61804-ZZ-C3 |
|---|---|
| Bore diameter (d) | 20 mm |
| Outside diameter (D) | 32 mm |
| Width (B) | 7 mm |
| Weight | 0.016 kg |
| Cage | Stamping steel cage |
| Basic dynamic load rating (Cr) | 3915 N |
| Basic static load rating (Cor) | 2435 N |
| Reference speed | 20969 r/min |
| Limiting speed | 24953 r/min |
Ask for the inspection record or catalogue page that matches these values. If a supplier quotes a different width, cage material or clearance code, treat it as a different part until the drawing proves otherwise.
C3 Clearance and Fit Are Not Interchangeable
C3 radial internal clearance is often specified to prevent preload when the bearing is pressed into a housing or run at temperature. Before ordering, verify the mating bore and shaft tolerances, the desired fit and the expected temperature rise. A C3 bearing installed in a tight housing without the intended clearance can run hotter than expected; a C2 or standard clearance substitution can create the opposite problem.
State the fit class on the purchase order and ask the supplier to confirm the clearance code on the bearing marking and packaging. For thin-section rings, small tolerance errors are less forgiving than they look on a 7 mm-wide part.
Cage, Seals and Numbering: Verify the Exact Suffix
The ZZ suffix indicates metal shields, while the cage is a stamped steel design. Both details affect speed, lubrication retention and contamination tolerance, so they belong in the technical review—not only in the price comparison. The 61800 series is an extra-ultra-light family, and the complete 61804-ZZ-C3 designation should appear on the carton and bearing marking.
If the number is unfamiliar to a new buyer, use our bearing number reference to decode series, bore, shield and clearance before requesting equivalents.
Lead Time Questions That Reveal Supply Risk
Ask whether the quoted bearing is stocked, assembled to order, or subject to a minimum batch. Request the confirmed ship date, not just a generic lead time, and clarify whether the price includes inspection certificates and controlled packaging. For maintenance shutdowns, a few days of ambiguity can be more expensive than the bearing itself.
Also confirm the quantity break, cancellation terms and whether the supplier can trace the steel and heat treatment batch. These answers separate a catalogue quote from a production commitment.
Before You Release the Purchase Order
Match the drawing to the table: 20 mm bore, 32 mm outside diameter, 7 mm width, stamped steel cage, C3 clearance and shielded ZZ construction. Confirm speed margin, fit, load case and lead time in writing. Then request a quote from FIJ Bearing with your annual or project quantity, target date and inspection requirements. Request a quote for 61804-ZZ-C3 from FIJ today.