What this servo brings to the line
The HG-SR421: Maximum radial load is 2058 N, so you can belt-drive or couple it directly without overhung-load concerns up to that limit. Ambient operating range is 0 to +40 °C—no derating needed up to that ceiling.
Mounting and environment notes
The IP67 housing lets you install it in splash zones or particle-laden air without a purge. Storage range is -15 to +70 °C—fine for warehouse stocking. Make sure the radial load stays under the 2058 N spec, especially for belt or pulley drives; an overhung load above that can shorten bearing life.