ZWO AM7 Harmonic Equatorial Mount

ZWO AM7 Harmonic Equatorial Mount

ZWO AM7 strain-wave equatorial/alt-az mount, 20 kg payload without counterweight (30 kg with), 6.75 kg mount head.

The AM7 is ZWO's highest-capacity strain-wave (harmonic) mount, built for heavier and longer-focal-length imaging rigs: 20 kg without a counterweight and 30 kg with one, for a 6.75 kg mount head. USB-C and DC power ports on the saddle keep cables tidy.

A strain-wave gear with a synchronous belt (300:1) gives high torque with no meridian-flip balancing worries and, in most setups, no counterweight. It works in equatorial or alt-azimuth mode, has a power-off brake on the RA axis and a mechanical zero position, and is controlled by ASIAIR, the included hand controller, or a PC over USB, Wi-Fi or Bluetooth. Every mount ships with its own periodic-error test report.

Specifications

In the box

Mount, hand controller with 2 m cable, 2 m USB-B and 1 m USB-C cables, PE test report, quick guide, M6 hex key

Manufacturer documentation

• ZWO AM7 product page
• ZWO guides and manuals
• ZWO AM7 user manual (2026-04) – see the Attachments tab

Specifications from the manufacturer's manual, checked 2026-11-06. Supplier reference 88445.