I changed all bearings in my HEQ5 couple of years ago as well, the larger axis bearings probably didn't make any practical difference, but the small worm bearings were definitely a big improvement.

Wonderful. Did you need any specific tools?

none what-so-ever.

hi, sorry to resurrect this older post, but I am about to hyper-tune my heq5 pro purchased 2019 new
and need some clarification. I have done a Rowan belt mod. From the heq5 rebuild guide
on astro-baby.com I can see that you need:

1 taper bearings per axis (SKF 30205) = 2 in total
2 deep groove ball bearings per axis (SKF 6006-2Z) = 4 in total
2 deep groove ball bearings per worm gear (SKF 628/9-2Z) = 4 in total

what are the other 6006-2Z bearings for ?

You actually need 5x 6006-2Z (I bought an extra one)

2x for the RA www.astro-baby.com/heq5-rebuild/heq5-ra1.htm


3x for the DEC www.astro-baby.com/heq5-rebuild/heq5-d1.htm

thank-you G.T.G ! 4 is what I thought. Why did you get a spare ?

I do not remember why I bought a spare, it's been almost two years now.

The large brass worm gears have two 6006 bearings per axis, one on each side, www.astro-baby.com/heq5-rebuild/ra022a.jpg shows one, the other is on the other side and DEC axis has a third one for the counterweight bar iirc.

its about to get cloudy for days here so I will strip apart the mount and confirm on that
last one for the CWB. thanks! I will do a detailed photo step by step and post for others
who may get into this.

I did a video of my refurbish. I re-greased the bearings rather than replace but it turned out well - there's also one about adjusting the worm gear on the same channel. You might get a couple pointers. Good luck!

thanks pentaxian23. Ah yes, our CDN currency! Also why I decided to do it all myself.
You are showing 2 sets of 3 ball bearings being degreased ? These are not the taper bearings
or the worm gear bearings correct ?

@dean, true but I degreased and repacked all the bearings with new grease, Only the worm bearing I couldn't get at to repack.