Chinese Router Spindle Bearings
Heeeeeeellllllp!!, Well after 760 hours the spindle bearings on my J-cut 6090B failed. Upon dissassembly I found there had apparently never been any lubricant in them. This is the 1.5Kw 2 bearing spindle motor. The bearings are angular contact ball bearings The designation number is 7002CTA and I need a soure to buy a few. The cheapest price each I have found is $134.60 and one source priced them at $444.00 each The ID is 15mm the OD is 32mm and the thickness is 9mm. They are angular contact ball bearings with a phenolic separator ring. The maximul listed RPM is 48,000 however I only operate at 10,000RPM and am looking for a dimensionally interchangable angular contact bearing. I only cut MDF.
A new spindle motor is $242 delivered so the $269.20 for two bearings seems excessive. I contacted the bearing manufacturer in China and they no longer produce this bearing. They are also made by NSK and Timkin among others for $344 apiece.
The bearings are easily changed if I can only find some of them. Any help would really be appreciated.
On a semingly unrelated item, my linear bearings did not have grease in them either and no fittings were installed for the zerks. I screwed some 6mm straight grease fittings in, however the grease gun won't fit due to the proximity to the guiderail. I can't screw in 45 degree fittings and plan to add a piece of flatbar (!/4 X 3/4) with 1" long 4-40 screws on top of the grease hole with 45 degree fittings installed. The plunger type grease gun used for chain saw nose sprockets works to some extent.
wizzardworks
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Re: Chinese Router Spindle Bearings
Hello. I am having trouble getting info about worn bearings on a bigger JCUT machine, a 25S with 4.5kw spindles, water cooled. I have less experience and expertise that most. One of the spindles makes a distinct wirhing/scratch noise upon spinning down. It got hot a few times when the chinese aqua pump did not turn on and I did a bunch of material removal with it. I use the spindles for deep draw carving so they also have an extender that makes life harder on them. See pic. I called one guy close by and he said it would cost around $3000 to replace the bearings and rebalance the spindle. Is that right? He didn't see the spindle, we just talked over the phone. Is it possible for me to replace the bearings? Attachment 233722Attachment 233724