Airbus Helicopters Main Rotor Bearings – Parker LORD, SKF & KRS FAA-PMA

Airbus Helicopters main rotor bearings in one place: Parker LORD, SKF Aerospace and KRS Aerospace (ex-SKF) FAA-PMA bearings, the OEM Airbus parts they replace, and the four-point contact bearing 704A33-651-158 / Y51BB10843S2M74 for the H125 / AS350, H130 / EC130 and AS355. New parts, FAA Form 8130-3 or manufacturer release documentation with every order.

OEM to FAA-PMA cross-reference

Airbus Helicopters P/N Description FAA-PMA / alternate Manufacturer · PMA
704A33-633-211 / 704A33-633-208 Main rotor spherical bearing (spherical stop) 704A33-633-211LORD Parker LORD · PQ0466NE
704A33-633-208 Spherical thrust bearing (stop assy) B60-90-7700 KRS Aerospace (ex-SKF) · PQ2457CE
704A33-633-124 (SKF 11-7775P) Ball joint / sealed spherical bearing, Starflex B60-90-0100 SKF Aerospace · PQ0289NE
704A33-633-151 Laminated member, longitudinal (MGB) B60-90-0590 KRS Aerospace (ex-SKF) · PQ2457CE
704A33-633-153 Laminated member, lateral (MGB) B60-90-0589 KRS Aerospace (ex-SKF) · PQ2457CE
350A33-2153-00 Tail rotor hinge bearing B60-90-0539 KRS Aerospace (ex-SKF) · PQ2457CE
704A33-651-158 Four-point contact bearing (bearing, 4 contacts) · NSN 3110-14-455-8099 Y51BB10843S2M74 Same NSN · OEM

Always confirm installation eligibility for your aircraft model and serial number against the current FAA PMA supplement (drs.faa.gov) and your approved maintenance data.

Parker LORD vs KRS / SKF for 704A33-633-208

Two FAA-PMA spherical stop bearings cover the Airbus 704A33-633-208 position on the AS350 / H125 / EC130 / AS355 main rotor. The Parker LORD 704A33-633-211LORD (PMA PQ0466NE) is approved as a replacement for 704A33-633-211 and, per Parker LORD, is equivalent to 704A33-633-208; it uses LORD's SPE IIA elastomer and is sold as a kit of three. The B60-90-7700 (PMA PQ2457CE, now held by KRS Aerospace Elastomeric Solutions, formerly SKF Aerospace) is approved directly as a replacement for 704A33-633-208. Both ship with an FAA Form 8130-3.

Why FAA-PMA bearings

  • FAA-approved replacements, verifiable on the FAA Dynamic Regulatory System (drs.faa.gov)
  • SKF and KRS B60-90 parts share the design and materials of the parts SKF supplies to Airbus Helicopters (per SKF)
  • FAA Form 8130-3 release certificate with every part
  • Lower cost and shorter lead times than the OEM channel in many cases

FAQ

Which certificate comes with FAA-PMA bearings?
FAA Form 8130-3. EASA Form 1 is not available for PMA parts; acceptance outside the US (EASA, ANAC) depends on bilateral agreements and the operator's approved data.

Is 704A33-651-158 the same bearing as Y51BB10843S2M74?
Both part numbers share NSN 3110-14-455-8099 (bearing, four-point contact) and are cross-referenced in our catalog. Contact us to confirm the version and documentation you need.

How do I order?
Click Request a Quote on any part with quantity and delivery location. Blackbird Aviation replies with price, lead time and documentation.