JU080CP0 sealed radial contact bearing has a 203.2 × 222.25 × 12.7 mm envelope. LYDL identifies the eight-inch size as LYDL-080UU in the Sealed Type C series. For a rotating drum or carrier around a stationary hub, review how the radial force moves relative to each ring before choosing fits. Provide the rotation arrangement, force directions and housing materials for a configuration review and quotation.
JU080CP0 sealed radial contact bearing is an eight-inch reference with a 203.2 × 222.25 × 12.7 mm nominal size. Its radial contact arrangement can be considered where a carrier or drum rotates around a stationary central support.
In that layout, copying the fit from a conventional rotating-shaft design can be misleading. Seat selection depends on the load's direction relative to each bearing ring, as well as the structure, materials and required installed clearance.
| Dimension | Inches | Millimeters |
|---|---|---|
| Bore, d | 8.000 | 203.200 |
| Outside diameter, D | 8.750 | 222.250 |
| Width, B | 0.500 | 12.700 |
| Radial section | 0.375 | 9.525 |
The bore and outside diameter define different mating components: the stationary hub and rotating carrier in this example. The 9.525 mm radial section remains thin even at an eight-inch bore. Specify seat geometry and support length rather than relying on nominal diameter alone.
The LYDL Sealed Type C parameter table lists LYDL-080UU for this size and a catalog mass of 0.481 kg. Include Sealed Type C when ordering: LYDL uses UU references in more than one bearing family. Confirm the complete supply designation on the quotation.
Draw the radial force at several angular positions and ask whether it stays fixed relative to the inner ring, the outer ring or neither. A ring can experience a circumferentially moving load even when the machine's external force appears stationary to an observer.
That distinction matters when assessing the tendency for relative movement at a seat. Fit selection must also allow for radial load magnitude, housing wall behavior, temperature and the loss of internal clearance caused by interference. A tighter fit is not automatically a better fit.
| Arrangement detail | Required description |
|---|---|
| Stationary hub | Material, section thickness and inner-ring retention |
| Rotating carrier | Outer-ring seat and the carrier's load path |
| External radial force | Direction in the machine frame through a full turn |
| Eccentric or rotating load | Magnitude, phase and operating speed |
If loads vary in direction, provide the complete range instead of labeling the application with only “outer ring rotating.” The supplier needs enough information to assess both rings, including transient conditions and any process force that follows the carrier.
Request a JU080CP0 fit review with your ring-motion diagram.
| Parameter | KAYDON JU080CP0 reference | LYDL-080UU Sealed Type C listing |
|---|---|---|
| Dynamic radial, Kaydon method / LYDL Cr | 6.984 kN (1,570 lbf) | 7.340 kN; basis not stated in the table |
| Dynamic radial, ISO comparison | 13.167 kN (2,960 lbf) | Not separately stated |
| Static radial | 17.926 kN (4,030 lbf) | 17.930 kN |
| Listed limiting speed | 810 rpm, subject to catalog conditions | 810 rpm, subject to supply confirmation |
Kaydon values describe the Kaydon bearing, not tested LYDL performance. Its dynamic ratings use a one-million-revolution L10 basis; the ISO column is identified as an ISO 281:1990 comparison. Static ratings assume rigid support. The listed speed applies at loads up to 20% of dynamic capacity. Do not combine the columns or apply these limits simultaneously without the appropriate selection analysis.
For JU080CP0, the published LYDL dynamic value is distinct from Kaydon's own-method rating and its ISO comparison value. Do not transfer a fit recommendation or load margin between brands just because the external dimensions agree. Confirm the LYDL rating basis and fitted internal condition together.
A Type C radial rating does not determine the carrier's allowable overturning moment. If the force acts away from the bearing plane, calculate the reactions in the complete support arrangement and review whether another support or bearing type is needed. The same nominal JU080XP0 envelope does not establish equivalent behavior.
A carrier may be driven at its perimeter while the center remains stationary. The drive force, gravity and carried component can each act in a different direction relative to the rings. Identify these contributions separately before combining the bearing reactions.
Also check how an attached cable, guard or process tool applies force. A satisfactory unloaded revolution does not represent the loaded carrier. This example illustrates the information required for selection and does not assign a universal fit class to JU080CP0.
Inspect seat diameter, roundness, shoulder geometry and surface condition before installing the bearing. Use the approved fit limits and material data, and apply mounting force through the ring being fitted. Keep retaining components clear of the seals.
Do not assume retaining adhesive will correct an out-of-tolerance seat. Any proposed repair requires an engineering decision on load transfer, alignment, temperature and future removal. Record the initial installed rotational resistance so later changes can be compared with a meaningful baseline.
| Brand | Verified reference | Meaning and comparison limit |
|---|---|---|
| KAYDON | JU080CP0 | Sealed JU series, radial contact Type C. |
| INA / Schaeffler | CSCU 080.2RS | CSC: deep-groove radial family; U: section series; .2RS: seals on both sides. |
KAYDON uses JU080CP0 for its sealed radial reference: J identifies standard steel with two nitrile seals; C identifies radial contact; P is a separator code; and the final 0 is Kaydon precision class 1, associated with ABEC 1F. The ending CP0 must not be read as a universal ISO P0 accuracy designation.
These references share the nominal 203.2 × 222.25 × 12.7 mm envelope. Fits, internal clearance, seals, accuracy and rating methods still require a manufacturer-specific comparison before replacement.
When disassembling a trial unit, document the location and pattern of marks before cleaning. Relative movement at the seat, cover movement, contamination and assembly damage can produce different evidence. A single polished area is not enough to diagnose the cause.
For a controlled evaluation, retain seat measurements, applied loads, operating temperatures and photographs. Agree the supplied bearing material, seals, lubricant, cage and internal clearance. Those records let the review connect observed behavior with the actual configuration rather than with a generic catalog designation.
No. The direction and magnitude of load relative to the ring are central, but ring deformation, temperature and installed clearance also matter. Use a calculated fit range for the actual carrier rather than a blanket interference rule.
Yes. A force associated with rotating mass or a rotating process attachment can move around the stationary ring. Describe the force in both the machine frame and the ring frame before choosing the fit.
No. Investigate seat dimensions, load transfer, retention, surface condition and relative movement. Bearing diameter or catalog capacity alone cannot explain a seat interface failure.
Only after an approved repair assessment. The material, gap, temperature, alignment and load transfer may differ from the original design. Define the repair procedure and verification requirements before returning the assembly to service.
Record the relevant seat geometry, bearing identification and installed rotation behavior using defined conditions. Include clearance or runout checks where specified, and distinguish them from unsupported free-ring measurements.
JU070CP0 reduces the bore to 177.8 mm, while JU100CP0 increases it to 254 mm. Either requires a different hub and carrier. Preserve the load-relative-to-ring analysis when comparing these alternatives; physical rotation alone does not define a suitable fit.
Quote JU080CP0 / LYDL-080UU / Sealed Type C. Supply the rotating-ring arrangement, force vectors, seat materials, temperature limits, retention drawing and quantity. Ask LYDL to identify the proposed fit assumptions and inspection scope.
Request the JU080CP0 supply specification and quotation.
These sources document manufacturer reference products and their catalog methods; they are not LYDL certifications.
