Chainsaw Repair

Does Oregon make better wheels or do I need to buy elsewhere, I prefer to buy wholesale in case I like the setup well enough to buy in bulk for resale.

As srcarr52 mentioned, Molemab makes replacement wheels for these grinders.  They are sold individually through Bailey's, and offered in bulk through Stens. When on sale at Baiiey's they go for around $11 or $12 each, for your size grinder. These have a slightly different grit than Oregon branded wheels (one is 60 grit and one is 80 grit as I recall). 

Bailey's also carries the resinoid wheels for these grinders: https://www.baileysonline.com/Chainsaw-Chain/Chain-Grinders-Wheels/Chain-Grinding-Wheels/Chain-Grinding-Wheels-5-3-4-Diameter/Molemab-Black-Resin-Grinding-Wheel-5-3-4-x-1-8.axd  These are similar in appearance to cut-off wheels, and are less likely to 'burn' a cutter, and slightly less expensive to buy.  You might want to try one.  They give off a phenolic smell, however, so I prefer to only use them out doors.

http://chainsawrepair.createaforum.com/chain/chainsaw-chain-grinder-wheels/msg43656/#msg43656

Philbert