The Limitorque LRP provides durable functionality and prolonged service life through unique features such as piston support rods within the actuator, ensuring that side loads generated by the pistons are transmitted through bearings in the end cap and not the body. This eliminates the need for the body to be used as a loadbearing surface and promotes longer service life. The support rod design of the Limitorque LRP actuator distinguishes it from the standard rack and pinion design and offers reliable operation, performance stability and longer service life.
Additional information
| Type | Rack & Pinion |
|---|---|
| Action | Rotary |
| Fluid Power | Pneumatic |
| Sizes | 10, 15, 20, 25, 30, 33, 35, 40 |
| Maximum Output | 1700 Nm (1250 ft-lbf) |
| Pressure Rating | 120 psig |
| Fail Safe Operation | Last, Closed, Open |
| Enclosure | Anodised Aluminum |
| Seals | NBR Buna, Viton®, and Low Temperature Nitrile |
| Temperature Range | -40°C to 150°C (-40°F to 302°F) Seal Dependent |
| Manual Override | None |
| Options | Epoxy Paint, Limiguard Anodization, PVC Coated, Quick Acting, BSPP Ports |
Features & Benefits
- The LRP actuator is suitable for use in Safety Integrated Systems in accordance with IEC 61508 up to and including SIL Level 3
- Spring return and double acting configurations available (fail open, fail close and fail-in-place capability)
- High and Low temperature versions available: +150°C to -40°C (302°F to -40°F)
- Balanced double rack and pinion provides a linear torque curve with a large range of sizes for efficient torque matching
- Mounting to ISO 5211 pattern and DIN 3337 female star drive provides common and simple actuator to valve attachment
- Namur VDI/VDE 3845 top mouting pattern for easy fitting and interchangeability of accessories
- Unique support rods absorb side loads from piston, guaranteeing longer service life and high performance stability
- LimiGuard high performance chemically bonded PTFE coating or Epoxy painting to customer specification, available on request
- One piece steel pinion drive with full width piston tooth engagement for greater operational life
