POSI-SEAL Type 1035 Rack-and-Pinion
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A compact, dual-opposed rack and pinion design and guide band suspension system combine to produce a symmetrically balanced, center-mount actuator with a short powerful stroke and rapid response.
A fully concentric operating load capability provides optimum performance
- Three Point Suspension System — Three carbon-filled PTFE guide bands provide a low friction bearing surface for piston alignment and rack support.
Elimination of metal-to-metal contact between pistons and cylinder wall reduces friction for outstanding cycle life, smooth piston travel, and maximum power. - Balanced Piston Design — As part of the design, three equally spaced bearing surfaces are cast into each piston.
The rack and pinion construction results in even distribution of bearing loads, optimum gear engagement, and reduced piston tilt. Equal spring force applied to each piston enhances actuator life. - Multiple Constructions — Conversion from double acting to spring return, or vice versa, is simple and safe, thus reducing spare part requirements. Valve/actuator action is also field reversible.
- Dual Stop Adjustment — This adjustment is standard on all E Series actuators.
The P Series actuators are supplied with a limit plate adjustment feature. - Dual Piston Design — Air pressure applies a balanced force across the common pinion gear.
Symmetrically balanced center mount construction eliminates undue stress on the valve stem, bearings, and disc.