K20008CP0 is the verified KAYDON reference for LYDL PC20008, a 200 × 216 × 8 mm open radial contact thin section ball bearing. Its large bore and small section are useful dimensions to consider around a hollow drum or annular support. Bearing reactions, seat stiffness and installation access must be assessed together. This page covers the confirmed open configuration; a standard sealed counterpart has not been verified in the official sources reviewed. Send the drum layout and operating conditions to LYDL for a drawing and quotation.
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K20008CP0 references LYDL PC20008, an open Type C radial contact bearing measuring 200 × 216 × 8 mm. This size offers a large central envelope within an 8 mm section, making the support arrangement around a hollow drum an important design question. The bearing supports a defined load path; it does not establish the drum's full stiffness or alignment by itself. Only the open model is verified here, and no unconfirmed J-series or UU counterpart is assigned.
| Parameter | LYDL PC20008 |
|---|---|
| Bore diameter, d | 200 mm |
| Outside diameter, D | 216 mm |
| Axial width, B | 8 mm |
| Radial cross section | 8 mm |
| Design | Open radial contact, Type C |
| Approximate catalog mass | 0.22 kg |
| KAYDON comparison model | K20008CP0 |
The 200 mm open entry can be checked in the LYDL metric radial-contact series.
Begin with the drum's weight, payload distribution and all process forces. Identify whether these forces remain fixed relative to the machine or move with the drum. Place them on a drawing with the real bearing locations so that each radial support reaction can be calculated.
Do not estimate each bearing load by dividing the total weight by the number of supports. Unequal spacing, an offset payload or an external drive can change the distribution substantially. If the assembly uses more than two radial supports, relative support stiffness and alignment may also influence load sharing.
The large bore does not make the thin rings independent of the surrounding structure. A flexible seat can alter how load reaches the rolling contacts. Review drum shell stiffness and local ring support alongside the calculated reaction. Where substantial overturning load must be carried by one compact support, revisit the bearing arrangement rather than assigning a Type X moment rating to this Type C product.
Discuss the PC20008 drawing and operating conditions.
KAYDON reference data — K20008CP0. These published figures are not LYDL test results or a certified LYDL load rating.
| Radial rating basis | Reference value |
|---|---|
| Dynamic, KAYDON method | 7,335 N |
| Dynamic, ISO method | 10,261 N |
| Static | 20,055 N |
The catalog identifies ISO 281:1990 as the ISO calculation basis, for comparison only. Keep the two dynamic ratings separate. Dynamic values use one million revolutions of L10 life; static values assume rigid shaft and housing support. The LYDL table labels force capacities in kg, so those entries have not been relabeled as N.
No model-specific operating speed is quoted from the open reference table. Obtain LYDL limits for the selected lubricant, internal setting and actual duty before approving operation.
A rotating inspection drum may need an internal stationary member or equipment route. The 200 mm bearing bore defines the mating seat, while the usable central passage depends on the wall thickness and structure placed inside it. Do not describe the entire bore as unobstructed service space without the assembly drawing.
PC20008 can be considered where an enclosure provides contamination control and a planned lubricant supply. Because the bearing is open, the enclosure and maintenance strategy form part of the selection. Any requirement for an integrated sealed alternative needs a separate drawing review and verified supply designation.
Check whether the bearing can pass over every shoulder and feature on the installation route. Include the tooling envelope, retainer access and the support needed while the drum is partly assembled. A valid final section view can still conceal an impossible assembly sequence.
Use fixtures that support the components evenly without bending the thin rings. Keep fitting force on the ring being installed. Avoid using the bearing to guide a heavy drum into place while the second support remains unsecured; temporary supports should control the component during that stage.
After installation, check the intended radial and axial constraints with the complete structure fastened. Record any change in rotation as the final covers and supports are secured. Retain practical access for inspection and removal so that future service does not require force through the rolling elements.
PC20008 is the confirmed LYDL open supply model and K20008CP0 its catalog comparison reference. The official tables reviewed do not verify the matching standard sealed model. A request for seals should therefore be quoted as a separately confirmed configuration, not created by changing a prefix on the order.
In KAYDON's metric code, C means radial contact, P identifies the standard formed snap-over separator, and 0 denotes class 1 / ABEC 1F. K is the open steel series; J identifies steel bearings with two nitrile seals. These suffixes do not certify LYDL material, accuracy or clearance.
The NSK NBC label identifies radial thin-section construction in a different catalog system. It does not prove a 200 × 216 × 8 mm replacement exists. Compare complete boundary dimensions and mounting requirements before evaluating another brand's candidate.
For receiving checks, identify the bearing model, approved dimensions and condition of the protected surfaces. For assembly approval, define the drum datum, checking load and relevant running surface. Keep these two levels of inspection distinct. Agree preservation, packaging support and storage handling for the thin open rings so that damage during logistics is not confused with an original manufacturing variation.
It describes the bearing's nominal bore, which normally mates with a supporting component. Hub walls, retainers and internal equipment reduce the usable passage. Establish the free-space requirement from a complete section drawing rather than treating the bearing bore as a finished cable or equipment opening.
Not without reviewing the structure. With multiple supports, tolerances, alignment and relative stiffness can affect the reaction distribution. A simplified equal-share assumption may be unsuitable. Provide the support positions and stiffness information so that the machine designer can establish a defensible load model.
That designation has not been verified in the official product tables used for this page. Ask LYDL to confirm any sealed proposal with its own drawing, dimensions and supply code. A naming pattern alone is insufficient evidence that a standard product or a matching KAYDON reference is available.
A shoulder, flange or neighboring component may block the fitting path or tool access. Check the full assembly sequence, not only the final position. Include temporary support of the drum and a future removal route. Installation feasibility should be resolved before purchasing the bearing.
Keep it covered until the mating components are clean and ready. Use the specified lubricant and avoid exposing the open contacts to machining debris or dirty handling surfaces. The final enclosure should provide the required environmental protection; shipping preservation alone does not define the operating lubrication system.
A thicker 200 mm-bore section or a smaller thin-section seat may change the structural layout; compare them with the drum design in view:
K20013CP0 — 200 × 226 × 13 mm · K15008CP0 / J15008CP0 — 150 × 166 × 8 mm
Supply the drum section, support positions, payload cases, drive forces and assembly sequence. Specify the enclosure and lubrication method, speed and required inspection conditions. LYDL can then assess PC20008 against the actual installation and identify whether any custom closure request requires a separate proposal.
Send your PC20008 selection details to LYDL.
