JU100CP0 sealed radial contact bearing measures 254 × 273.05 × 12.7 mm. The LYDL series reference is LYDL-100UU, Sealed Type C. For equipment with changing radial loads, retain each load, speed and duration rather than selecting from one average value. The Kaydon catalog provides two distinct dynamic-rating columns; use the method applicable to the confirmed LYDL supply when requesting a life assessment and quotation.
JU100CP0 sealed radial contact bearing is a ten-inch radial support reference with a 254 × 273.05 × 12.7 mm envelope. This page focuses on selecting a consistent rating basis for equipment whose load and speed change during a working cycle.
A single catalog number cannot describe every duty. The useful selection record connects the bearing configuration with the load history, calculation method and acceptance criteria required by the machine builder.
| Dimension | Inches | Millimeters |
|---|---|---|
| Bore, d | 10.000 | 254.000 |
| Outside diameter, D | 10.750 | 273.050 |
| Width, B | 0.500 | 12.700 |
| Radial section | 0.375 | 9.525 |
The ten-inch bore is paired with a 9.525 mm radial section and a 12.7 mm width. These dimensions define the nominal installation envelope; they do not establish a bearing life, a shaft tolerance or the deflection of the surrounding structure.
The LYDL Sealed Type C parameter table lists LYDL-100UU for this size and a catalog mass of 0.594 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.
Divide the operating cycle into meaningful states. For each state, record radial load, any axial load, speed, duration and temperature where relevant. Include the time spent unloaded, parked or reversing, but do not assume each condition contributes to damage in the same way.
An arithmetic average force can conceal short periods of much higher loading. Similarly, a time-weighted speed alone loses the relationship between load and accumulated revolutions. Give the supplier the underlying states so the equivalent-load and life method can be selected consistently.
| Duty state | Data that should remain available |
|---|---|
| Productive rotation | Load vectors, speed and duration |
| Acceleration and braking | Peak loads and occurrence frequency |
| Changeover or idle | Rotation, load and lubricant conditions |
| Exceptional event | Credible maximum load and protective measures |
Keep routine fatigue assessment separate from static checks and machine accuracy requirements. Passing a fatigue calculation does not demonstrate that a brief overload, an unsupported housing or a large output deflection is acceptable. Define the required operating life and reliability target before requesting a calculation.
Send the JU100CP0 operating-state table for selection review.
| Parameter | KAYDON JU100CP0 reference | LYDL-100UU Sealed Type C listing |
|---|---|---|
| Dynamic radial, Kaydon method / LYDL Cr | 7.922 kN (1,781 lbf) | 7.920 kN; basis not stated in the table |
| Dynamic radial, ISO comparison | 14.248 kN (3,203 lbf) | Not separately stated |
| Static radial | 22.197 kN (4,990 lbf) | 22.200 kN |
| Listed limiting speed | 650 rpm, subject to catalog conditions | 650 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.
The LYDL figure of 7.920 kN is close to the converted Kaydon-method value at catalog rounding precision, but numerical agreement does not prove an identical calculation basis. The ISO comparison column is a separate quantity. Record the method explicitly rather than treating the larger column as a capacity upgrade.
Kaydon labels its ISO radial column as a comparison calculated to ISO 281:1990. That historical catalog reference is not a declaration that the LYDL product has been certified to an ISO standard, nor a reason to combine one manufacturer's rating with another manufacturer's unverified configuration.
A rotating process module may operate under load for one part of a shift, then turn slowly during a separate service cycle. The two states can differ in speed, temperature and exposure as well as force. Describe them individually, including the cleaning environment if it reaches the bearing arrangement.
The bearing assessment should use the required service conditions and the supplied seal and grease specification. This example explains duty definition; it does not claim washdown suitability or a calculated service life for JU100CP0.
Catalog ratings assume a suitable mounting arrangement. Verify the support geometry and load path before treating the bearing as the only flexible component. A thin housing or eccentric shaft load can change alignment and the contact conditions used in an idealized analysis.
Specify internal clearance, seat fits and the operating temperature range with the drawing. If a design revision changes the fit or lubrication, review whether the original calculation remains applicable. Preserve those configuration details with the life-assessment report.
| Brand | Verified reference | Meaning and comparison limit |
|---|---|---|
| KAYDON | JU100CP0 | Sealed JU series, radial contact Type C. |
| INA / Schaeffler | CSCU 100.2RS | CSC: deep-groove radial family; U: section series; .2RS: seals on both sides. |
KAYDON uses JU100CP0 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 254 × 273.05 × 12.7 mm envelope. Fits, internal clearance, seals, accuracy and rating methods still require a manufacturer-specific comparison before replacement.
Ask the supplier to identify the input load cases, rating source, calculation method and assumptions. Distinguish calculated fatigue life from warranty terms, maintenance intervals and a machine endurance-test result. They answer different procurement questions.
For sample validation, agree a representative cycle, measurement intervals and failure criteria. Record torque, temperature or output accuracy where they matter to the machine. A short no-load run can confirm basic assembly behavior, but it does not validate the requested service life under variable radial loading.
They represent Kaydon's rating method and an ISO-based comparison identified in the catalog. Keep the labels and assumptions with each value. The columns are not independent capacities that can be added together.
Not without using the applicable method and validating its assumptions. A favorable number from a different basis does not establish additional capability in the bearing supplied for your machine.
They may lose important information about high-load states and accumulated revolutions. Provide the load-speed-duration combinations first; derive equivalent values only through an appropriate, documented calculation.
No. Lubricant condition, seals, contamination, installation and the machine's acceptance requirements can also limit service. Set maintenance requirements using the complete application and supporting evidence.
Request the exact bearing configuration, load cases, rating source, method, assumptions and calculated result. Identify exclusions and the criteria requiring reassessment when the machine design or duty changes.
JU080CP0 and JU120CP0 offer different eight-inch and twelve-inch envelopes. Compare their complete support designs and model-specific ratings. A larger bore does not justify scaling the JU100CP0 calculation by diameter or reusing its load-sharing assumptions.
For JU100CP0 / LYDL-100UU, Sealed Type C, submit the operating-state table, target service life, mounting drawing and quantity. Request a quotation that names the supplied rating basis and the scope of any calculation or validation.
Request the JU100CP0 supply specification and quotation.
These sources document manufacturer reference products and their catalog methods; they are not LYDL certifications.
