BEARING-MAIN-CRKSH (P/N 634503) - New Surplus
P/N: 634503
Category: Bearings & Bushings
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 1 Available |
Product Description
The 634503 is a crankshaft main bearing for Continental 520/550-series piston engines. This precision-engineered bearing shell supports the crankshaft within the crankcase during engine operation. Constructed with multi-layer bearing material for durability under continuous rotational loads and pressure cycling.
Used during engine overhaul or case-split maintenance to replace worn bearings. Install matched shell pairs with correct orientation and clearances per Continental engine overhaul manual specifications. Also supplied by Superior Air Parts as SA634503.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the BEARING-MAIN-CRKSH (P/N 634503)?
The 634503 is a crankshaft main bearing for Continental 520/550-series piston engines. This precision-engineered bearing shell supports the crankshaft within the crankcase during engine operation.
Does the 634503 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The BEARING-MAIN-CRKSH conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the 634503 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the 634503.
Can I order the 634503 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The BEARING-MAIN-CRKSH is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
Related Bearings & Bushings
- BEARING,BALL,AIRFRAME – P/N ms27647-4a
- ROLLER ASSY – P/N 110142sht2125
- BUSHING, PIPE – P/N an912-4d
- BUSHING – P/N 212-46218-02-1
- BUSHING – P/N 137668c12
- BEARING – P/N 779059-1
- BEARING – P/N ksbg9n
- BEARING-MAIN – P/N 633398
- BEARING – P/N 8l8f
- BEARING, CUP – P/N lm29710-2-629
- BUSHING SLV FLANGED – P/N 3003332-1
- CONTROLLER – P/N 7990051-290