P/N: MS27640-3A, KP3L

Roller Bearing

MS27640‑3A (KP3L) airframe ball bearing for aircraft control systems
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. Offering you 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.