Here is an excellent video that shows the inner construction and major components of a rack and pinion actuator.
While many rack and pinion actuators seem the same, this manufacturer ROTEX, engineers their product to provide the longest possible service life with innovative features such as:
- V-Seal polymer double lip seal offers the most efficient, dynamic sealing in the industry.
- Massive bearings with greater surface area allow for higher load capacity.
- Monolithic billet pinion provides for incredible strength and durability.
- Two part epoxy paint over anodized aluminum body gives superior corrosion protection.
Additionally, ROTEX Controls Inc. warranties the complete actuator for 3 years or 3 million cycles, including all seals. All major components, including body, pinion, bearings, springs, seals, and all hardware are covered for the full term of the warranty, 3 years or 3 million cycles. No other manufacturer warrants their product as well.