Double-Row Standard BearingsAircraft Bearings

KP4A

Name: KP4A Bearing
Brand: NLHB

d 6.35 × D 19.05 × B 7.137 mm

The KP4A is an aircraft bearing with bore 6.35mm, outer diameter 19.05mm, and width 7.137mm rated for dynamic load 1.1 kN.

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KP4A — representative product photo — Representative product

KP4A · 6.35x19.05x7.137 mm

📋 Technical Specifications

Bore (d)

6.35mm

Outer Dia. (D)

19.05mm

Width (B)

7.137mm

Dynamic Load (Cr)

1.10 kN(1100 N)

Static Load (C0r)

0.90 kN(900 N)

Reference speed for this model is provided with your quotation.

Bearing type	Aircraft Bearings
Series	Double-Row Standard Bearings
Standard reference	MS27641-4 (MS27641 medium-duty deep-groove radial series) — dimensional reference
Seal type	Open
Material	Confirmed per inquiry — grade and certificate availability reviewed before quotation
Bore type	Confirmed per drawing
Dimension unit	millimeter (mm)

📐 Detailed Dimensions

Basic dimensions (mm)

Bore diameter (d)	6.35
Outer diameter (D)	19.05
Width (B)	7.137

Corner radius, shoulder dimensions, fits and tolerances are confirmed against the requested suffix and application drawing before quotation.

📑 Drawings & 3D Model

KP4A bearing dimension drawing, 6.35 x 19.05 x 7.137 mm — KP4A dimension drawing: bore d 6.35 mm × outer diameter D 19.05 mm × inner-ring width B 7.137 mm; outer-ring width C 5.563 mm. Internal design is shown schematically.

📑

2D Drawing (PDF)

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📐

2D DXF File

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📅

3D STEP Model

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The PDF drawing is free to download. DXF and 3D STEP files are sent on request: tell us the model and your application, and we reply with the CAD files.

⇄ Same-size Bearings & Reference Options

Standard reference: MS27641-4. This size corresponds to the boundary dimensions of the MS27641 medium-duty deep-groove radial series. NLHB supplies it for industrial use; it is not supplied as an airworthiness-certified aerospace part.

The models below share the 6.35x19.05x7.137 mm boundary dimensions. Matching d/D/B alone does not prove interchangeability; verify seals, clearance, ring features, load ratings, fits, and application conditions before replacement.

Model	Relationship	Series	Seal	Action
KP4AFS428	Same boundary dimensions — verify fit/load	Radials	Double Sealed	Quote →
KP4AFS464	Same boundary dimensions — verify fit/load	Radials	Double Sealed	Quote →
KSP4AFS428	Same boundary dimensions — verify fit/load	Roller Bearings	Double Sealed	Quote →
KSP4AFS464	Same boundary dimensions — verify fit/load	Roller Bearings	Double Sealed	Quote →
MKP4AFS428	Same boundary dimensions — verify fit/load	Double-Row Precision Bearings	Double Sealed	Quote →
MKP4AFS464	Same boundary dimensions — verify fit/load	Double-Row Precision Bearings	Double Sealed	Quote →
MKSP4AFS428	Same boundary dimensions — verify fit/load	Double-Row Precision Bearings	Double Sealed	Quote →
MKSP4AFS464	Same boundary dimensions — verify fit/load	Double-Row Precision Bearings	Double Sealed	Quote →

🔄 Related Models

Same bearing family or similar dimensions.

Similar size — reference only, verify all interfaces

⚙ Typical Applications

Aircraft landing gear

Flight control systems

Aerospace mechanisms

Jet engine accessories

Helicopter components

Why choose NLHB?

NLHB supports both in-house manufacturing and qualified partner sourcing. We confirm the specification, supply route, inspection requirements, and available documentation before quotation.

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Specification Confirmed

❓ Frequently Asked Questions

What are the dimensions of KP4A?

The KP4A bearing has bore (d) = 6.35 mm, outer diameter (D) = 19.05 mm, and width (B) = 7.137 mm.

Is there a KP4A drawing or CAD file?

Yes. The KP4A dimension drawing (PDF) is free to download on this page. DXF and 3D STEP files are sent on request: tell us the model and your application.

What is the load rating of KP4A?

Dynamic load rating (Cr) = 1.10 kN (1100 N), static load rating (C0r) = 0.90 kN.

What bearing series does KP4A belong to?

The KP4A belongs to the Double-Row Standard Bearings within the Aircraft Bearings category.

Can NLHB supply KP4A equivalents from other brands?

Depending on the model and order requirements, NLHB may manufacture in-house or source through qualified partner factories. Interchange and supply route are confirmed against your specification before quotation. All trademarks belong to their respective owners.

How do I order KP4A from NLHB?

Click "Request Quote" and send us your quantity, application, and required specifications. We review the specification, supply route, lead time, and pricing before issuing a quotation. Response time depends on specification complexity.

What materials are available for KP4A?

Material grade is confirmed per inquiry. Availability depends on the model, quantity, application, and whether the order is manufactured in-house or sourced through a qualified partner factory. Material certificates or inspection documents are confirmed before quotation when required.

Get a quote for KP4A

Send us your quantity, application and target lead time. We confirm spec, interchange and realistic delivery — no order confirmed until you approve.

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