Altitude
Bearings
Better
balance and motion for your telescope:
How
do tightrope walkers maintain balance? With long poles to spread balance
over a wider base. Standing with feet together can make you very unstable.
Widening your stance greatly increases stability. Larger altitude bearings
provide that wider base. And finer incremental movement as well; increased
bearing circumference allows more space between each degree. More space
means increased control and finer motion.
Customer
photos/comments
Pricing/Ordering
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5" factory bearings. |

Bearing upgraded to 12". |
Upgrade your 5" bearings to 12".
Quickly and easily.
Pricing/Ordering
Photos: (L) small
factory 5" bearings, (R) upgrade attached externally.
Fit internal or external
to side walls depending on mount design.
Bolt holes customized
to your telescope.
Will these fit your mount side walls? Check
these dimensions.
All
parts included: 18mm Baltic birch bearings and supports with captures
(see 12" bearing unfinished below), laminate, Teflon, screws.
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12" Bearing Internally Mounted.
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12" Bearing (unfinished).
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Standard 12"
and 18" bearings.
Pricing/Ordering
All
bearings use "3/4" inch Baltic birch plywood (18mm). Available
as kits or finished. Finish uses gloss polymer from General Finishes.
Choose among these options - advise what you need or ask us:
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Carry handles are built in. |

18" bearing. |
What
you get: all parts included. Bearings, Teflon (with supports only),
laminate strips, fine tuning assembly (optional).
What you need: Kits require glue for laminate (contact cement), glued
with finished bearings, Torx (#8) and Phillips (#4) screwdriver, longer
tube attachment bolts (if necessary).
Choosing between 12" and 18" altitude bearings: Generally,
the shorter the tube, the smaller your bearings can be and maintain balance.
Larger tube diameters and/or heavier, the larger the bearing needed.
Several "rules of thumb" for bearing size exist, from 1.2 to 2.0
times the telescope's aperture. Size matters: Go bigger and have no regrets. |
Ordering
|
Type |
Description |
Price
|
5BUK |
5" bearings to 12" Kit Upgrade |
$65 |
5BUF |
5" bearings to 12" Finished Upgrade |
$111 |
S12BK |
Standard
12" Bearings Kit |
$53 |
S12BSK |
Standard
12" Bearings with Supports Kit |
$67 |
S12BF |
Standard
12" Bearings Finished |
$87 |
S12BSF |
Standard
12" Bearings with Supports Finished |
$105 |
S18BK |
Standard
18" Bearings Kit |
$79 |
S18BSK |
Standard
18" Bearings with Supports Kit |
$99 |
S18BF |
Standard
18" Bearings Finished |
$121 |
S18BSF |
Standard
18" Bearings with Supports Finished |
$147 |
CSB |
Custom
Size Bearings: Request quote. |
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