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This is one of the key components in making a Dobsonian move smoothly and easily in azimuth, even when pointed near the zenith. Each kit contains a 3/8" x 2.5" brass bolt, Bronze thrust bushing, stainless steel locknut assembly and full instructions. The new bushing only requires a 1/2" through hole. The supplied bolt length is configured for a nominal rocker box bottom thickness of 3/4" and a ground board thickness of 3/4" and a teflon bearing thickness of 3/16".
The 1.50" square Teflon center pad is shimmed to take part of the load off the azimuth pads, giving the telescope excellent azimuth movement. The pivot bolt is pre-drilled with lock screw for digital setting circles. Optional bolt lengths available are 2", 3" and 3.5". Add $5 for one of these custom lengths.
$27.00, ShipWeight 1 lb. Secure Order
$32.00 for kit with custom bolt length ShipWeight 1 lb. Secure Order
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Smooth out your telescope movement with virgin Teflon bearings. All kits contain 3 azimuth and 4 altitude bearing pads of 3/16" minimum thickness virgin Teflon, pre-drilled and countersunk, with stainless steel mounting screws.
| Telescope Weight | Azimuth Pads(3) | Altitude Pads(4) | ShipWeight | Price | |
|---|---|---|---|---|---|
| Small-kit | up to 70 lbs. | 1" x 1" | 0.75" x 1" | 1 lb. | $22.00 |
| Large-Kit | 71-120 lbs. | 1.5" x 1.5" | 1" x 1.5" | 1 lb. | $26.00 |
| Custom-Kit | 120-250 lbs. | 2.5" x 2.5" | 1.5" x 2" | 2 lbs. | $38.00 |