JU060CP0 sealed radial contact bearing uses a 152.4 × 171.45 × 12.7 mm envelope and the LYDL-060UU Sealed Type C series reference. For shafts supported at two positions, define which support locates the shaft axially and how length changes are accommodated. Send a section drawing showing both bearings, retainers, materials and operating temperatures. Request confirmation of the mounting fits, internal clearance and LYDL supply ratings.
JU060CP0 sealed radial contact bearing is a six-inch Type C reference measuring 152.4 × 171.45 × 12.7 mm. It can be considered within a two-support shaft arrangement whose main bearing demand is radial.
The important design decision is not simply where the bearings fit. The drawing must also explain how the shaft is located axially and how the assembly accommodates relative length changes without creating an unintended thrust load.
| Dimension | Inches | Millimeters |
|---|---|---|
| Bore, d | 6.000 | 152.400 |
| Outside diameter, D | 6.750 | 171.450 |
| Width, B | 0.500 | 12.700 |
| Radial section | 0.375 | 9.525 |
The 12.7 mm bearing width belongs in the axial stack, while the 9.525 mm radial section controls the nominal seat envelope. Shoulder locations, spacers and retainer tolerances must be specified separately; the catalog width is not a complete stack definition.
The LYDL Sealed Type C parameter table lists LYDL-060UU for this size and a catalog mass of 0.367 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.
Identify the component that establishes the shaft's axial reference. Then trace every contact that can resist axial movement: bearing shoulders, covers, circlips, spacers, couplings and neighboring parts. Two apparently independent supports can become a constrained assembly when both rings are trapped at both ends.
A non-locating support needs a defined mechanism for accommodating movement. It is not enough to call a bearing “floating” on a drawing. If movement occurs at a ring seat, the fit, surface and load condition must permit it without creating an unacceptable risk of creep or wear. Type C radial contact geometry does not itself provide unlimited axial sliding.
| Drawing item | Question to resolve |
|---|---|
| Axial datum | Which support fixes the shaft position? |
| Retention at each ring | Which interfaces are clamped or allowed to move? |
| Relative length change | What movement is needed over the thermal cycle? |
| Coupling or process attachment | Does another component add an axial constraint? |
Review startup, steady operation and shutdown. The shaft and housing may not reach the same temperature at the same time.
Send both bearing supports for a JU060CP0 arrangement review.
| Parameter | KAYDON JU060CP0 reference | LYDL-060UU Sealed Type C listing |
|---|---|---|
| Dynamic radial, Kaydon method / LYDL Cr | 5.947 kN (1,337 lbf) | 6.630 kN; basis not stated in the table |
| Dynamic radial, ISO comparison | 11.895 kN (2,674 lbf) | Not separately stated |
| Static radial | 13.656 kN (3,070 lbf) | 13.660 kN |
| Listed limiting speed | 1,080 rpm, subject to catalog conditions | 1,080 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.
LYDL publishes a different radial dynamic value from the Kaydon method and ISO-comparison entries. None of these numbers defines the permissible thermal thrust in your assembly. Obtain the supplier's rating basis and assess any actual axial load with the selected internal-clearance condition.
Type C can accommodate some axial load in either direction under suitable conditions, but this is not permission to use thermal expansion as a preload adjustment. Schaeffler specifically cautions against axial loading of clearance-free or preloaded deep-groove thin section bearings. Apply the supplied manufacturer's limits to the actual configuration.
Consider a shaft supported by housings on separate machine plates. Each plate may be individually accurate, yet their assembled axial relationship can change as the machine warms. A rigidly coupled drive can add another locating function that was absent from the bearing sketch.
Model the complete constraint chain and establish the permitted shaft displacement at the process end. This example supports design review; it does not prescribe a universal floating fit or prove that a particular machine will operate without thermal binding.
Bearing internal clearance, ring-seat interference and movement at a floating seat describe different interfaces. Do not substitute one for another in the drawing notes. Specify the required installed condition and the method used to verify it.
Check that a cover cannot unintentionally clamp the intended sliding interface. Confirm seal clearance throughout the allowed travel, and inspect the coupling's permitted axial movement. During installation, support the fitted ring and keep shoulders clean; assembly force should not become an uncontrolled preload.
| Brand | Verified reference | Meaning and comparison limit |
|---|---|---|
| KAYDON | JU060CP0 | Sealed JU series, radial contact Type C. |
| INA / Schaeffler | CSCU 060.2RS | CSC: deep-groove radial family; U: section series; .2RS: seals on both sides. |
KAYDON uses JU060CP0 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 152.4 × 171.45 × 12.7 mm envelope. Fits, internal clearance, seals, accuracy and rating methods still require a manufacturer-specific comparison before replacement.
Record axial position, rotation resistance and temperatures at defined points during a representative warm-up and cooldown. Use the same load and restraint conditions as the intended machine. Observe whether the designated movement interface actually moves as planned.
Agree the acceptance limits before testing. A shaft that rotates freely at room temperature has passed only that condition. Keep the bearing configuration, fit measurements, spacer dimensions and temperature record together so the supplier and machine builder can investigate any change without guessing which interface caused it.
Some arrangements can use two axial constraints by design, but the resulting loads and movement must be calculated. Do not assume that fully retaining both supports is harmless when shaft and housing temperatures or materials differ.
No. It must permit the required movement while remaining suitable for the direction of load relative to the ring. Surface condition, creep risk, retention and travel limits also need review.
Do not rely on that assumption. Radial internal clearance is not a substitute for a defined axial accommodation mechanism. Trace the actual constraints and calculate the required movement of the complete support.
The coupling may introduce misalignment or an additional axial restraint. Compare the assembly before and after connection and check the coupling supplier's movement limits. Review the whole locating chain before changing the bearing.
Show both bearings, shoulders, retainers, spacers, couplings, axial datums and the intended movement interface. Add material, temperature and load information so the review can distinguish fit requirements from thermal accommodation.
JU050CP0 and JU070CP0 provide five-inch and seven-inch alternatives for a redesigned support. Their different seat sizes do not change the need to define axial location. Compare the whole arrangement before choosing a larger bearing solely to address thermal symptoms.
Specify JU060CP0 reference / LYDL-060UU / Sealed Type C and identify the locating support. Include shaft length, support spacing, materials, temperature range, axial-position allowance and order quantity when requesting the drawing and quotation.
Request the JU060CP0 supply specification and quotation.
These sources document manufacturer reference products and their catalog methods; they are not LYDL certifications.
