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ZWO Counterweight shaft is suitable for the ZWO AM5 / AM3 mount and other mounts with a corresponding M12 x0.75 thread. Necessary for an AM5 mount if the payload of the mount exceeds 13 kg. Made of stainless steel. Length approx. 230 mm. Diameter 20 mm.
While ZWO is offering a counterweight shaft (see their description below) for their AM3 and AM5 mounts, they will NOT be offering counterweights. You will need to procure your own weights with a 20mm central hole diameter to fit this bar. See the “Related Products & Accessories” section above for compatible weights.
The counterweight and counterweight bar # BC230 are needed when the load on the AM5 mount is over 13kg. Note that ZWO does not recommend the use of additional counterweights exceeding 5 kgs (11 lbs), not counting the weight of this bar. Also note no counterweight safety stop screw is included with this item. A stop screw is included on the AM3 and AM5 mounts and moved to this counterweight shaft when installed. Also works with ZWO’s AM3 mount.
Made of oxidation-resistant solid metal, the counterweight bar can be used with multiple mounts with matching M12x1.75 threads.
- Material: 304 stainless steel
- Weight: 0.5kg
- Screw thread: M12 x 1.75 Male
- Size (mm): Length: 230 ± 0.5, Diameter: 20
