It sounds like you're looking into the RBC Bearings SJ9718 from their Pitchlign Heavy Duty Needle Roller Bearings range. If you're seeking something for demanding applications like helicopter rotors or marine crankshafts, these might be a solid choice.

From our research, these bearings are appreciated for staying smooth and enduring a lot of wear and tear. They’re designed with durability in mind, although we couldn't pinpoint the exact load rating from the info we have. Still, the manufacturer's description hints that they're built tough to handle significant stress.

These bearings are quite versatile, fitting into various setups across different industries. You can get them in both sealed and unsealed versions, depending on what your machinery requires. They're engineered for precise movement, which is always a plus when you're looking for reliable and efficient performance.

If your focus is on dependable and effective bearing options, these could be worth considering.

But I'd recommend checking in with a supplier or the manufacturer directly for the exact load rating and any other details that might be crucial for your specific needs. That way, you can be sure they’ll work for what you have in mind.