Chuck and bearings runout question

[Ulma Doctor]

The nachi 6203-2NSE9 is the C3 equivalent.
they are suitable for use in electric motors and drill press quills too !

C5 is a higher grade as well as a more expensive bearing

SKF 6203-2RS/C3 are very good bearings too

 

[jwmelvin]

C5 is a higher grade as well as a more expensive bearing

I thought C3 and C5 are increasing clearance, not anything to do with quality. ABEC ratings are the quality rating, right?

BEARING CLEARANCE | Bearing Corporation

BEARING CLEARANCE Radial Internal Clearance The radial internal clearance of a ball bearing affects life, noise, vibration and heat generation. It is important to select the appropriate internal clearance for each application. The three types of internal clearance of a ball bearing are radial...

www.bearingcorporation.com

 

[astjp2]

Here is a one stop shopping, I was checking ebay but some of those suppliers were 2 weeks to ship, amazon was not any better

Search Results -> 6205 : CNC Specialty Store, Industrial Supply

cnc-specialty-store.com

 

[Ulma Doctor]

I thought C3 and C5 are increasing clearance, not anything to do with quality. ABEC ratings are the quality rating, right?

BEARING CLEARANCE | Bearing Corporation

BEARING CLEARANCE Radial Internal Clearance The radial internal clearance of a ball bearing affects life, noise, vibration and heat generation. It is important to select the appropriate internal clearance for each application. The three types of internal clearance of a ball bearing are radial...

www.bearingcorporation.com

my bad, i should have said ABEC5 bearings are more precise and expensive than ABEC3 grade

 

[astjp2]

what about FAG 7205-B-XL-2RS-TVP?

 

[pontiac428]

If you want to make it easy on yourself, try vxb.com (vxb bearings) for your Nachi needs. I've had mixed results buying bearings on eBay, so I prefer to go to a reputable distributor. The prices are similar to fleabay in spirit, and they won't pass off flood-ruined parts as "new old stock"

 

[mikey]

what about FAG 7205-B-XL-2RS-TVP?

I'm not sure if precision bearings are justified in a drill press, even if they fit. Your call of course. If you can find a double row angular contact bearing to fit in the lower spindle then that would be a win.

 

[astjp2]

Well I got the pulley off, I found a puller that I forgot I had, now I need to get the shaft out, do I use a piece of all thread and push the shaft out the bottom?

 

[mikey]

It should push out from the bottom. These bearings are usually a slip fit but can bind if cocked in the bore. If you have a small jack, you can put that on the table and put a piece of wood on top of the small jack to push the sleeve out the top.

 

[francist]

Just don't snap the table off in the process