Hi, I am looking for a spherical ball bearing that would be able to carry a static load of approximately 50,000 lbs. I am looking for something that would have a shaft size in the area of 1" to 2" in diameter. I have read on your website that you offer tapered bores on these, but I wondered if you offer straight bores? Also, if you have the coefficient of friction on these bearings, please let me know. Thanks for your help.