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Airframe Ball Bearing – FAA-PMA Replacement KP3L / MS27640-3A

Airframe Ball Bearing – FAA-PMA Replacement KP3L / MS27640-3A

South Seas Ventures

(Backordered) Normally Available within 3-7 Days.

SKU:MS27640-3A

Regular price $34.39 USD
Regular price $34.39 USD Sale price $34.39 USD
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Roller Bearing MS27640-3A | KP3L Airframe Ball Bearing

MS27640‑3A (KP3L) airframe ball bearing for aircraft control systems—new and fully traceable, built to MS/AS27640 dimensional standards for reliable replacement.

  • New stock with full traceability to the original manufacturer
  • Direct interchange: MS27640‑3A / KP3L airframe control bearing
  • Double seals, grease‑packed (MIL‑G‑81322) for long service life
  • Chrome steel rings/balls (AISI 52100); -65 °F to +250 °F operating range
  • Compact 0.625" OD × 0.190" ID with precision widths for accurate fit
  • Ideal for aircraft control linkages and other airframe mechanisms

The MS27640‑3A (KP3L) is a heavy‑duty airframe ball bearing widely used in aircraft control systems where compact size and dependable performance are essential. Built to the MS/AS27640 geometry, this roller bearing features a 0.1900" bore and 0.6250" outside diameter with correctly matched inner and outer ring widths to ensure proper staking and retention. Double contact seals retain MIL‑G‑81322 grease to protect the raceways from contamination and reduce maintenance intervals, while heat‑treated AISI 52100 chrome steel rings and balls provide high strength and wear resistance across typical aviation operating temperatures. Supplied new and fully traceable, this MS27640‑3A airframe ball bearing offers a reliable, like‑for‑like replacement for common KP‑series installations in fixed‑wing and rotorcraft applications. Use wherever the specification calls for MS27640‑3A / KP3L dimensions and load capability.

Technical Specifications

Standard / Reference MS27640‑3A (AS27640), KP3L
Bore (d) 0.1900 in (4.826 mm)
Outside Diameter (D) 0.6250 in (15.875 mm)
Inner Ring Width (B) 0.245 in (6.22 mm)
Outer Ring Width (C) 0.203 in (5.16 mm)
Load Ratings (approx.) Radial: 1,560 lbf; Thrust: 700 lbf
Seals / Lubrication Double contact seals; Grease MIL‑G‑81322
Materials AISI 52100 chrome steel rings & balls
Operating Temperature -65 °F to +250 °F
Typical Applications Airframe control linkages, levers, and mechanisms
Alternate Identifiers AS27640‑3A; KP‑3L; NSN 3110‑00‑023‑4810
Condition / Traceability New; fully traceable to original manufacturer

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