Thread: choosing a spindle.
I am in the process of building my first cnc which will be a flat bed router to be used mainly for cutting surfboards from eps foam however i will also be cutting some wood also. I have been trying to research as much as i can on here and have spoken to a few friends but not really to sure what size spindle i need to be looking at. because of some of the depths i will be cutting i will require quite long bits which i assume will mean it will need a larger collet size. The other thing i will need to have is the ability to adjust the speed during the cut and would all so like the ability to cut mdf and ply wood in the future so having enough power for that is important. I have read a older thread on the 2.2kw water cooled chinese spindles which was briefly mentioned to me but it sounds like it is a bit hit and miss with what you get and that there were some suppliers that were better than others but im really not sure if that would actually be over kill for what i need?
Can any one provide and advise? the only spindles i have really found are the kress ones and the chinese ones on ebay.
many thanks charlie
Avoid Kress... Even the 1500 will limit you; noisy and poor duty cycle (the amount of time running v cooling off).
Surfboards are big things so unless your machine is very fast the machining times are going to be long especially if you plan to profile them rather than just cutting out the blank. You need a spindle that can run for long periods and the water-cooled 2.2kW spindle is ideal. Yes there have been a few duds but most are ok. I'm sure there'll be a few recommendations coming along...
Last edited by irving2008; 15-01-2014 at 06:10 AM.
best regards charlie
ive had mine around 3 years from this seller,i know many others have to but this one there now doing looks slightly different at the business end.im not sure wether its an improved model on what im using but can vouch for the seller.
Four Bearings 2 2KW Air Cooled Spindle Motor ER20 Inverter Drive | eBay
One of the water cooled spindles does sound like your best option. Since you want to use long tools, don't get the 1.5kW version as it only comes with an ER16 collet and not ER20. That leaves 2.2kW or larger and larger wont really gain anything here so go for the 2.2kW spindle.
This is the one. I got mine from that seller only a couple of weeks before/after diesel and it does have 4-bearings as advertised.
Last edited by Jonathan; 15-01-2014 at 04:35 PM.
what are peoples with import duties from china?
Or get one from China via Portsmouth:
2.2KW WATER-COOLED SPINDLE MOTOR 2.2KW INVERTER DRIVE VFD GRINDING ENGRAVING q5 | eBay
Might be a good idea as it avoids the customs fee lottery...
I can easily cut any wood with 1.5kW so power is not a problem, but to give best range of cutters I would also suggest 2.2kW water cooled.
Can't remember exact import duty but it was in the range of a few tens of pounds - still good value overall.
Chai trades under the name 'linearmotionbearings2008' on ebay. Good reputation, good communication.
If you go water cooled you'll the you might be asking next about cooling systems. In short nothing special is required so search this forum for methods used. I used a radiator and fan designed for overclocking water cooled PCs, but have discovered through use that this is overkill. Others have just pumped the water to a large metal bucket on the floor and been fine.
Last edited by routercnc; 15-01-2014 at 09:26 PM.
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