Description
ZWO Counterweight Balance Bar for AM5 Mount
For payloads heavier than about 28 lbs. (13 kg), the ZWO AM5 Equatorial Mount requires a counterweight shaft like this 230 mm long ZWO Bar, as well as a separately available counterweight in order to achieve proper balance.
Made of solid metal resistant to oxidation, this counterweight bar contains M12x1.75 screw threads and will work with any mount that has these threads.

- Designed for ZWO AM5 Mounts – Provides a dedicated mounting point for adding a counterweight to the AM5 harmonic equatorial mount.
- 230 mm Counterweight Bar – The 230 mm length provides sufficient clearance and positioning for counterweights while remaining compact.
- Stainless Steel Construction – Made from durable stainless steel for strength and long-term use.
- M12 × 1.75 Thread – Uses the M12 × 1.75 mounting thread specified for the AM5 counterweight interface.
- Supports Counterweights up to 5 kg – Designed for use with counterweights of up to 5 kg on the AM5.
- Improves Mount Stability – Adding a counterweight can improve the stability of heavier telescope setups and help reduce the risk of the system tipping.
- Useful for Heavy Telescope Setups – ZWO recommends using a counterweight with heavier payloads; the AM5 supports up to 20 kg when a counterweight is used.
- Compatible with AM5N – The BC230 counterweight bar is also compatible with the newer ZWO AM5N mount.
- Compact and Easy to Install – Screws directly into the counterweight mounting interface on the bottom of the mount


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