LYDL bearing assortment with thin section, geared and flanged bearing designs

KA025CP0 Thin Section Bearing Reference – Open Type C

KA025CP0 thin section bearing reference: LYDL-A025 Type C, open radial-contact thin section bearing.
Nominal d × D × B: 2.5 × 3 × 0.25 in (63.5 × 76.2 × 6.35 mm).
KA family with 0.25-inch radial section and axial width; housing and retainers require separate space.
Two-and-a-half-inch bore for an intermediate mounting size.
Kaydon reference dynamic and static radial loads are separately identified in the detail table; LYDL ratings require supply confirmation.
Request a quote with quantity, application and destination; provide mounting requirements for drawing review.

Two-and-a-half-inch bore for an intermediate mounting size

The KA025CP0 thin section bearing reference has a 2.5-inch bore and three-inch outside diameter in an open radial-contact design. The 63.5 × 76.2 × 6.35 mm envelope is identified as LYDL-A025 Type C for inquiries. It fills an intermediate diameter position between the two-inch and three-inch KA references without changing section width.

Dimensions · Reference loads · Model comparison · FAQ

KA025CP0 thin section bearing dimensions

Parameter	Symbol	in	mm
Bore diameter	d	2.5	63.5
Outside diameter	D	3	76.2
Axial width	B	0.25	6.35
Radial section	(D − d) / 2	0.25	6.35

The three-inch dimension belongs to the outside ring

A drawing that shows a three-inch circle can refer to the outside diameter of KA025CP0 or the bore of KA030CP0. Always label d and D rather than selecting a model from one prominent dimension. The same numerical diameter can represent opposite interfaces on adjacent products. The 63.5 mm bore remains an inch-derived nominal size. A 63 mm or 65 mm shaft belongs to a different interface specification. Preserve the unit origin when transferring a maintenance sketch into a purchase order so apparent closeness does not conceal a mismatch.

Kaydon KA025CP0 reference load ratings

Reference rating	lbf	kN (converted)
Dynamic radial — Kaydon method	442	1.966
Dynamic radial — ISO comparison	1,094	4.866
Static radial	830	3.692

Source: Kaydon official model table, referenced below. These are Kaydon reference capacities, not verified LYDL supply ratings. Dynamic values use a one-million-revolution L10 basis; the ISO column is a comparison rating calculated per ISO 281:1990. Static values assume rigid shaft and housing support. Ratings are not additive or simultaneous permissible loads. Conversion: 1 lbf = 0.0044482216152605 kN; displayed kN values are rounded.

Brand designations for this nominal envelope

Brand	Designation	Scope
LYDL	LYDL-A025 Type C	Supply inquiry identity
Kaydon	KA025CP0	Open radial-contact reference
Silverthin	SA025CP0	Same nominal size and contact family
INA / Schaeffler	CSCA025	CSC catalog radial-contact reference

KA025CP0, SA025CP0 and CSCA025 identify brand-specific references for the 2.5 × 3 × 0.25 in radial-contact envelope. INA / Schaeffler uses CSC for the Conrad radial family; its following letter identifies the section. Compare the complete specification before interchange. Brand names remain with their owners; this LYDL offer does not imply brand authorization. Catalog references do not guarantee current availability.

Discuss your size and configuration

Send KA025CP0, quantity and the application to begin a quotation. Where an existing assembly must be preserved, identify its fixed interfaces and include the available drawing. A complete analysis is not required to start the commercial inquiry.

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Choosing an intermediate shaft size for a small rotating sleeve

A rotating sleeve may need more opening than the two-inch option but cannot accommodate the outside diameter of the three-inch-bore option. KA025CP0 provides an intermediate envelope to evaluate. Its feasibility still depends on the sleeve wall, radial force and how the rings are located. Consider how the sleeve is driven and whether an axial process force is present. The radial-contact geometry does not make a thrust review unnecessary. This is a layout example for engineering discussion, not proof that the size is qualified for a particular sleeve mechanism.

Illustrations of thin-section-bearing application contexts — General application illustration; suitability of this model depends on the actual machine design.

Related sizes and installation envelopes

Reference	Bore d (in)	Outside D (in)	Width B (in)
KA025CP0	2.5	3	0.25
KA020CP0	2	2.5	0.25
KA030CP0	3	3.5	0.25
KA035CP0	3.5	4	0.25

The current model’s 76.2 mm outside diameter equals the nominal bore of KA030CP0, but the two bearings serve entirely different shaft and housing interfaces. The adjacent rows demonstrate why a single dimension cannot establish interchange. Compare the installation dimensions of KA020CP0, KA030CP0, KA035CP0. Explore the open Type C size table and radial-contact bearing category. For another contact arrangement, see the KA025XP0 four-point contact reference.

Label both mating interfaces on the assembly drawing

Show the 63.5 mm shaft interface and 76.2 mm outer interface explicitly, along with the bearing width and retention arrangement. Use separate dimensions for shoulders and corner clearances. A section view is often more informative than an overall diameter callout when discussing a replacement. Plan a clean insertion path so the open ring is not scraped along contaminated surfaces during assembly. Once installed, check the relevant running condition and document any unusual resistance before adding the rest of the drive components.

Inspection, handling and packing

For stores containing several nearby KA sizes, retain both model and bore information on each individual package. Do not sort open rings by apparent outer diameter alone. Protective separation and corrosion control should remain intact until the identified item reaches assembly.

General bearing inspection and protective packaging illustration — Illustrative packing and inspection scenes; order-specific protection and records are agreed separately.

Questions about this model

Does three inches on my drawing identify KA025CP0 or KA030CP0?

Determine which interface the dimension describes. Three inches is the outside diameter of KA025CP0 and the bore of KA030CP0. Both the inner and outer dimensions are required to identify the bearing envelope.

Can the 63.5 mm bore be treated as a 65 mm nominal size?

No. The 1.5 mm difference changes the shaft interface. KA025CP0 is an inch-series reference, and its metric conversion should remain exact rather than being mapped to a nearby preferred metric diameter.

What if the sleeve wall reduces the usable opening?

Calculate the remaining passage from the sleeve’s inner diameter and internal parts. The bearing bore locates the sleeve externally; it does not state the clear opening through a finished hollow assembly.

Is the quarter-inch section preserved from KA020CP0?

Yes, both references have nominal 6.35 mm width and radial section. The bore and outside diameter increase by 12.7 mm when moving from KA020CP0 to KA025CP0.

What should be recorded before fitting the drive?

Check identification, seating and the agreed running condition. Recording that stage helps distinguish a mounting problem from resistance introduced later by a belt, gear or external seal.

Request a quote for KA025CP0

Include “LYDL-A025 Type C, KA025CP0 reference,” quantity and delivery destination. Add the required load case, speed and installation drawing when available. Ask for a drawing review if the shaft, housing or retention geometry must match an existing assembly.