Altitude Bearings

Option 1
Small Fitted Bearings

"Thank you for those amazing altitude bearings! They are perfect." - B. Gentile 8/20/18

Supports are custom cut to to your tube diameter. Use them to build a Dobsonian, turn your equatorially mounted Newtonian into a Dobsonian, or "Dob" your equatorially mounted newtonian or SCT using your existing rings. Attach with 3/8
" bolt through a center hole in the bearing (not shown in above image). Avaiable with or without an outside 1/8" thick by 3/16" tall lip. Without a lip the bearing surface is up to 11.875". Supports are 3/4" wide, bearings 0.708" wide. Kits are rough sanded and assembled but not spray finished (raw).

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Select bearing type.
 
Below items for options 1 and 2 only.
Lip: 1/8" wide by 3/16" tall.
Bearing diameter?
Tube O.D. or flat mount?

Option 2
Large Bearings

Shown above. Available with supports cut to fit the outside diameter of your tube, or as flat sided altitude bearings that fit against square or rectangular mirror boxes, typically for 12 inch or larger telescopes. Large bearings are 12" to 23.875", and available with our without an outside 1/8" thick by 3/16" tall lip. Kits ship rough sanded and assembled but not spray finished (raw).



Option 3
Big Bearings: makes 5" bearings 12"

New Big Bearings: If you have typical small factory installed bearings (5" or 5.5" diameter), a Big Bearings upgrade provides a "drop in" replacement with a 12" bearing surface. That means smoother motion, finer control, greatly improved balance without springs or counterweights, and no lateral slippage. Bearing mounts onto exisiting altitude bearing, Support bracket with teflon mounts onto the rocker box side board. Then remove the old teflon so the Big Bearing rides freely. Requires a drill and Phillips screwdriver. How easy can it get? . Kits ship rough sanded and assembled but not spray finished (raw). Photos above, below and to left.