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

KA020CP0 Thin Section Bearing Reference – Open Type C

KA020CP0 thin section bearing reference: LYDL-A020 Type C, open radial-contact thin section bearing.
Nominal d × D × B: 2 × 2.5 × 0.25 in (50.8 × 63.5 × 6.35 mm).
KA family with 0.25-inch radial section and axial width; housing and retainers require separate space.
Two-inch bore with a compact 63.5 mm outer envelope.
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-inch bore with a compact 63.5 mm outer envelope

The KA020CP0 thin section bearing reference is the two-inch radial-contact option in the open KA range. The 50.8 × 63.5 × 6.35 mm nominal envelope is offered for inquiry as LYDL-A020 Type C. Its compact outside diameter makes the mounting arrangement, external protection and available tool access important parts of selection.

Dimensions · Reference loads · Model comparison · FAQ

KA020CP0 thin section bearing dimensions

Parameter	Symbol	in	mm
Bore diameter	d	2	50.8
Outside diameter	D	2.5	63.5
Axial width	B	0.25	6.35
Radial section	(D − d) / 2	0.25	6.35

Small envelope, separate space for retention

The outer radius exceeds the bore radius by 6.35 mm. That narrow annulus describes the bearing itself; it leaves no allowance for the housing wall, screw heads or a retaining cover. A compact drawing should show those features at the same scale as the bearing so an apparently acceptable envelope does not become an impossible assembly. The two-inch bore is 0.8 mm larger than a nominal 50 mm shaft. Even at this relatively small size, the difference cannot be absorbed by calling the bearing thin section. Keep the inch specification visible on procurement and machining documents.

Kaydon KA020CP0 reference load ratings

Reference rating	lbf	kN (converted)
Dynamic radial — Kaydon method	393	1.748
Dynamic radial — ISO comparison	1,012	4.502
Static radial	680	3.025

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-A020 Type C	Supply inquiry identity
Kaydon	KA020CP0	Open radial-contact reference
Silverthin	SA020CP0	Same nominal size and contact family
INA / Schaeffler	CSCA020	CSC catalog radial-contact reference

KA020CP0, SA020CP0 and CSCA020 identify brand-specific references for the 2 × 2.5 × 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 KA020CP0, 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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Designing access for a compact instrument mechanism

A compact radial-support mechanism may have little room for mounting tools around the ring. Plan how the bearing will be inserted, seated and removed before closing the surrounding housing design. Tool access and clean assembly can matter as much as nominal diameter in a small mechanism. If the mechanism operates near dust or process debris, the open construction needs a separate contamination strategy. A cover or labyrinth must clear the moving components throughout the expected motion. This is an application screening scenario, not a claim of instrument-grade performance or a tested customer installation.

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)
KA020CP0	2	2.5	0.25
KA025CP0	2.5	3	0.25
KA030CP0	3	3.5	0.25
KA040CP0	4	4.5	0.25

All three larger KA references preserve the 6.35 mm section but need successively larger shaft and housing interfaces. Enlarging the bore to improve tool or service access therefore requires a deliberate redesign of both mating diameters. Compare the installation dimensions of KA025CP0, KA030CP0, KA040CP0. Explore the open Type C size table and radial-contact bearing category. For another contact arrangement, see the KA020XP0 four-point contact reference.

Avoid transmitting mounting force through the balls

Choose a mounting tool that acts on the ring being fitted. Pushing on the opposite ring can route assembly force through the rolling contacts. Where both rings must be positioned together, use an installation procedure matched to the support arrangement and the manufacturer’s drawing. Before accepting a batch, agree which dimensional and running checks are required and how the bearing is supported during measurement. Do not treat free-hand rotation or a single caliper reading as a complete inspection of a thin-ring bearing.

Inspection, handling and packing

Individual protection is useful even for this small two-inch ring. Separate it from loose fasteners and heavier components in a maintenance kit, and avoid loads concentrated on its edge. The packaging illustration is general; the actual wrapping, corrosion protection and labeling are order-specific.

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

Questions about this model

Can KA020CP0 be ordered as a 50 mm bore bearing?

That would change the nominal specification. KA020CP0 has a 50.8 mm bore. Identify the actual required shaft interface first; do not substitute a rounded metric description for the two-inch reference.

Does the 63.5 mm outside diameter include a retaining ring?

No. It is the bearing’s outer diameter only. Retainers, fasteners and surrounding housing walls must be accommodated beyond the bearing envelope according to the assembly design.

Where should the assembly tool push on this small ring?

Apply fitting force to the ring that is entering its mating seat. Avoid driving one ring by loading the other through the balls. The exact tool geometry depends on the drawing and installation sequence.

Is a radial rating also an allowable suspended weight?

No direct conversion establishes a safe payload. The force direction, offsets, bearing spacing, shock and support stiffness all affect the bearing reactions. A static capacity is not a ready-made equipment working-load limit.

How should a dusty instrument enclosure protect an open bearing?

Consider an external cover, labyrinth or other suitable barrier as part of the machine design. Include lubricant access and clearance to moving parts; the CP0 reference itself does not provide an integral sealing system.

Request a quote for KA020CP0

Include “LYDL-A020 Type C, KA020CP0 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.