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| 3/8" Pivot Kit | 1/2" Pivot Kit | Pivot Installation |
PTFE Bearing Kits
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| 3/8" Pivot Kit | 1/2" Pivot Kit | Pivot Installation |
Easy Installation
Improves Telescope Motion
Digital Setting Circle / Drive Ready
This is one of the key components in making a Dobsonian move smoothly and easily in azimuth, even when pointed near the zenith. The square PTFE 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 circle encoder.
3/8" Pivot Kit
Each kit contains a 3/8" x 2.25" brass bolt, bronze thrust bushing, stainless steel locknut assembly and full instructions. 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 PTFE bearing thickness of 3/16".
1/2" Pivot Kit
The 1/2" bolt kit is recommended for 20" and larger telescopes. Each kit contains a 1/2" x 2.5" brass bolt, bronze thrust bushing, stainless steel locknut assembly and full instructions. 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 PTFE bearing thickness of 3/16".
3/8" Bolt $29.00, ShipWeight 1 lb. (Optional bolt lengths in 3/8" are , 3" and 3.5". Add $5 for the 3" and 3.5" length.)
3/8" Pivot Bolt only, Shipweight 1/2 lb. $10.00 1.75", 2", 2.25 $14.00 3.0" and 3.5"
1/2" Bolt $38.00, ShipWeight 1 lb. ( Optional bolt lengths are 2.75" and 3.5". Add $5 for the 2.75" and 3.5" length.)
1/2" Pivot Bolt only, Shipweight 1/2 lb. $18.00 2.5" 2.75" 3.0" 3.5"
Contact us for custom lengths
AstroSystems PTFE Bearing Kits
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Smooth out your telescope movement with virgin PTFE bearings. All kits contain 3 azimuth and 4 altitude bearing pads of 3/16" (0.19") minimum thickness virgin PTFE, pre-drilled and countersunk, with stainless steel mounting screws. These suggested sizes will accommodate most telescopes. Individual pieces and custom size pieces are also available.
| Telescope Weight | Azimuth Pads(3) | Altitude Pads(4) |
Ship
Weight |
Price | |
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| Small-kit | up to 70 lbs. | 1" x 1" | 0.75" x 1" | 1 lb. | $26.00 |
| Medium-Kit | 71-120 lbs. | 1.5" x 1.5" | 1" x 1.5" | 1 lb. | $30.00 |
| Large-Kit | 120-250 lbs. | 2.5" x 2.5" | 1.5" x 2" | 2 lbs. | $39.00 |
| Individual PTFE Pieces | 1" x 1" | 0.75" x 1" | $3.00 ea. | ||
| 1.5" x 1.5" | 1" x 1.5" | $5.75 ea. | |||
| 1.5" x 2" | $8.00 ea. | ||||
| 2.5" x 2.5" | $18.00 ea. | ||||
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Custom
(specify size) |
$3.00/sq. in. |
