1. compact design utilizing identical body and end caps for double acting and spring return models.

2. Full conformance to ISO 5211, for interchangeability and easy mounting of solenoids, limit switches and other accessories.

3. Two independent external travel stop adjustments permit easy and precise adjustment of +/- 5° in both directions.

4. Multiple bearings and guides on pistons and racks for precise operation, low friction, high cycle life and a blowout proof pinion shaft.

5. Electroless nickel-plated blowout resistant, bearing guided, one-piece pinion shaft for improved safety and maximum cycle life.

6. High precision teeth on piston racks and pinion shaft for accurate positioning, low backlash, and maximum engagement resulting in overall efficient operation.

7. Extruded aluminum body with both internal and external corrosion protections having a honed cylinder surface for longer life and a lower coefficient of friction.

8. Modular preloaded spring cartridges designed with coated springs for versatility, greater safety and corrosion resistance.

9. Internal and external stainless steel fasteners for long term corrosion resistance.