Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 350mm stroke and a built-in spring-applied, air-released mechanical lock in the front cover — it holds the load at the extended (rod-out) stroke end even when air is lost.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350
The AirTAC SAILF80X350 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages when the piston reaches the extended stroke end, securing the rod-out position to hold loads safely without requiring continuous live air pressure. With a 25mm carbon steel rod and a 3/8 PT port, it provides 2513N of push force at 0.5MPa and 4523N at 0.9MPa.
The variable air cushion at the locker end is specifically shortened to 22.5mm compared to the 36mm cushion on the free end, accommodating the locking hardware. Unlocking is achieved automatically by supplying air to the release port or manually via the release lever. For position sensing, adding the -S magnet option enables compatibility with AirTAC CMSE reed and DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 350 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released (front cover) |
|---|---|
| Unlock | Automatic (air) & manual |
| Operating pressure | 0.15 – 1.0 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable (36 mm free end / 22.5 mm lock end) |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAIL datasheet (ISO 15552). Confirm against the product label before installation. Port options: PT / G.
How the Lock Holds
The lock is spring-applied and air-released: a spring drives a lock pin into the rod when the release air is removed, so the load is held at the extended (rod-out) stroke end without live pressure. Supply air to the release port to unlock automatically, or use the manual release lever.
The lock engages only when the piston reaches the stroke terminal on the front-cover side — it is a static end-of-stroke hold, not a mid-stroke clamp and not a moving-rod brake. For locking at any position along the stroke, choose a BSAI clamp-lock instead.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Cylinder thrust is separate from the lock's holding capability. Actual usable force is lower than theoretical due to friction and back-pressure — size with a margin.
Where the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 Is Used
Extended Lift Holding
Secures vertical lifts in the rod-out position during power loss, preventing gravity-driven drops until air is restored to the release port.
Gate Safety Locking
Holds safety gates and heavy guarding open at the extended stroke end without consuming continuous pneumatic energy.
Clamp and Hold
Maintains outward clamping pressure on a workpiece at the stroke terminal, ensuring the part remains fixed even if air pressure fluctuates.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 the Right Lock Cylinder?
Choose this 80mm bore when an application demands robust extended-position holding; if lower force is acceptable, the 63mm bore offers 1559N at 0.5MPa, while stepping up to the 100mm bore yields 3927N. Select SAILF to hold the rod-out extended position, and SAILB if the retracted position must be secured. If your application requires clamping at an arbitrary mid-stroke point rather than a stroke-end static hold, the BSAI clamp-lock cylinder is the correct choice.
Because the SAIL lock is a static holding device that engages after the cylinder stops, it cannot brake a moving rod. Valve selection is critical: avoid fast-exhaust valves and use an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the lock. For safety-critical suspended loads, always add an independent mechanical safety measure. At 350mm stroke, ensure external guide rails are used to prevent excessive side-loading on the rod. Replacement specifications require an 80mm bore, 350mm stroke, front locker position, 3/8 PT port, and standard carbon steel rod.
Quick checklist
- ✓ Hold needed at the extended (rod-out) end?
- ✓ Or lock anywhere → use BSAI
- ✓ Independent-exhaust valve fitted
- ✓ Port/thread type (PT/G)
- ✓ Extra safety measure for people
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X350 FAQ
At 0.5MPa operating pressure, the 80mm bore provides 2513N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end to provide a static hold. It unlocks automatically via air supply to the release port or manually via a lever, but it cannot clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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