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Astro-Physics 22.0" x 1.875" Diameter Counterweight Shaft


Price: $130.00


  • Manufacturer: Astro-Physics
  • MPN: M12601-E
  • SKU: M12601-E
  • Availability: In-Stock - Ships from Warehouse

The overall length of this shaft is 23.0" (22.0" usable, plus 1.0" threaded lead-in). This is the standard shaft for the 1200 and 1600 series of mounts and the optional "long" version for the 900 and 1100 series.

The threads on the mount end of the shaft have a lead-in to help prevent cross threading. We machined matching female threads into the far end of the counterweight shaft, to accept the handy 8.5" extension (M12675) so that you can extend the shaft to accomodate additional counterweights for a larger scope. The washerless Safety Stop (M12676) is a required accessory for this counterweight shaft.

Like its predecessors, this 1.875" diameter counterweight shaft is precision machined from solid 303 stainless steel. It is both beautiful and robust and has a soft luster that belies its rigid strength. This 17.2 lb. (7.8 kg) shaft can hold up to eight 30 lb. counterweights (240 lb. total - Note: This exceeds 1600GTO recommended capacity.). It is compatible with our 5 lb. (5SCWT), 10 lb. (10SCWT), 18 lb. (18SCWT), 24 lb. (24SCWT) and 30 lb. (30SCWT188) counterweights.

This shaft is recommended for: the 1600GTO and all 1200 models that have been produced.





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