P/N: MS27641-6, KP6A

Roller Bearing

MS27641‑6 (KP6A) – Airframe Ball Bearing, 3/8" ID, 7/8" OD

• Exact MS27641‑6 dimensions: 0.375" bore, 0.875" OD, 0.313" inner width, 0.250" outer width.
• Contact seals on both sides (PTFE) for contamination control and smooth rotation.
• Hardened steel races and balls (E52100) for high durability in airframe control applications.
• Grease lubricated per MIL‑G‑81322 for long service intervals and stable performance.
• Corrosion protection with cadmium finish; stainless retainer for reliability.
• Fully traceable stock to the original manufacturer; suitable for aircraft MRO needs.

The MS27641‑6, also known as KP6A, is an intermediate‑duty airframe ball bearing designed for flight‑control linkages, landing‑gear mechanisms, and other aircraft systems requiring a compact bearing with tight tolerances. This single‑row, radial contact bearing features a 3/8" inner diameter and 7/8" outer diameter, with inner and outer ring widths of 0.313" and 0.250" respectively.

Dual PTFE contact seals help keep grease in and contaminants out, while heat‑treated E52100 steel rings and balls deliver consistent performance. Factory grease fill to MIL‑G‑81322 supports extended service life. A cadmium finish and stainless retainer enhance corrosion resistance. Each unit is new and fully traceable to the original manufacturer, providing confidence for maintenance shops and aircraft owners seeking an OEM‑spec replacement.