SRA
SRA Series
The general-purpose workhorse
Our broadest line of helical gear rotary actuators, covering the torque ranges most rotation applications call for.
View SRA Series → Product Lines
Which rotary actuator series is right for you?
All four SJH series share the same patented helical gear architecture, oil-immersed bearings, and drop-in interchangeability. They differ in duty class, envelope, and environment — here's how to choose.
Choosing at a glance
| Series | Positioning | Best suited for |
|---|---|---|
| SRA | The general-purpose workhorse | Start here. The SRA Series covers the widest torque range and drops into the most common competitor envelopes. |
| SRB | Compact power for tight envelopes | Choose SRB when mounting space or weight is the constraint — compact rotation without giving up torque. |
| SRC | Heavy-duty moment capacity | Choose SRC for severe service — demolition, mining, forestry — where shock loads and moment capacity decide what survives. |
| SRS | Sealed for severe environments | Choose SRS when the environment is the enemy — salt spray, washdown, and continuous outdoor exposure. |
Not sure? Send us your application details — our engineering team sizes and recommends a series, usually within one business day.
SRB
SRB Series
Compact power for tight envelopes
A space-saving series for weight- and envelope-critical applications where every pound and inch counts.
View SRB Series →
SRC
SRC Series
Heavy-duty moment capacity
Our heavy-duty series, built for severe shock loads and the highest moment demands.
View SRC Series →
SRS
SRS Series
Sealed for severe environments
A specialty series configured for harsh and corrosive environments — marine decks, washdown, and continuous outdoor exposure.
View SRS Series →Ready to spec a better rotary actuator?
Send us your application details and our North American engineering team will size the right series, confirm interchangeability with your current unit, and quote it — fast.