I am changing out the needle bearings on my john deere mower mounted snow blower. The needle bearings are for the two idler gears that the chain that spins the auger rides on. John Deere wants $50 for two tiny bearings which I am not spending. I measured the old bearing and its OD=13/16 ID=5/8 Width=7/8. I found some cheaper bearings on amazon. They are both by uxcell. One bearing is 1/2 in wide and the other is 3/4 wide. I would either press the one 3/4 wide bearing into the gear or I would use two 1/2in bearings pressed back to back. The 1/2 bearing says the dynamic load is 8,100N and the 3/4 bearing says its dynamic load is 4,390N. Why would the 1/2in wide bearing have a greater dynamic load? Which bearing should I go with for this application? https://www.amazon.com/uxcell-SCE108-Bearings-16-inch-Dynamic/dp/B07RWNGZ9K/ref=sr_1_3?crid=E1CWHZMRW8CP&keywords=needle+bearing&qid=1673583772&sprefix=needle+bearin,aps,92&sr=8-3&th=1