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Airframe Ball Bearing – FAA-PMA Replacement | MS27641-3 KP3A

Airframe Ball Bearing – FAA-PMA Replacement | MS27641-3 KP3A

South Seas Ventures

(Backordered) Normally Available within 3-7 Days.

SKU:MS27641-3

Regular price $30.02 USD
Regular price $30.02 USD Sale price $30.02 USD
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Roller Bearing – Airframe Ball Bearing | FAA-PMA Replacement MS27641-3 KP3A

New, fully traceable MS27641-3 (KP3A) airframe ball bearing with double PTFE seals and MIL-G-81322 grease. FAA-PMA eligible direct replacement.

  • FAA-PMA eligible replacement for MS27641-3 / KP3A specification
  • 0.190″ bore × 0.625″ OD × 0.297″ inner width × 0.234″ outer width
  • Double-contact PTFE seals retain MIL-G-81322 grease for long service life
  • Chrome steel rings & balls (E52100), heat-treated to Rockwell C60–C66
  • Corrosion-resistant cadmium plating with stainless steel retainer
  • Rated radial load 1,560 lbf; thrust load 700 lbf

The MS27641-3 / KP3A roller bearing is engineered for precision and durability in demanding airframe control applications. Manufactured to meet MS/AS27641 dimensional standards, this bearing features a 0.1900″ bore and 0.6250″ outer diameter, with optimized inner (0.297″) and outer (0.234″) ring widths for perfect fitment in aircraft linkages. Dual PTFE contact seals provide excellent protection against contamination while retaining MIL-G-81322 grease, ensuring smooth performance over extended intervals. Rings and balls are crafted from E52100 chrome steel and heat-treated to Rockwell C60–C66 for exceptional wear resistance. The cadmium-plated exterior enhances corrosion resistance, while a stainless steel retainer ensures stability under load. Fully traceable and supplied new, this bearing offers 1,560 lbf radial and 700 lbf thrust capacity, with reliable operation up to 250 °F.

Technical Specifications

Standard / Spec MS27641-3 (KP3A)
Bore (d) 0.1900″ (4.826 mm)
Outside Diameter (D) 0.6250″ (15.875 mm)
Inner Ring Width 0.297″ (7.54 mm)
Outer Ring Width 0.234″ (5.94 mm)
Seal Type Double-contact PTFE seals
Lubrication MIL-G-81322 grease
Material E52100 chrome steel rings & balls, stainless steel retainer
Hardness Rockwell C60–C66
Plating Cadmium, QQ-P-416 Class 2
Operating Temp Up to 250 °F
Radial Load Rating 1,560 lbf
Thrust Load Rating 700 lbf
Condition New; fully traceable

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