Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X75S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X75S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 75mm 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
- Stroke75 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 SAILF80X75S
The AirTAC SAILF80X75-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a lock pin into the carbon steel rod, securely holding the load at the extended stroke end without consuming live pressure. You can unlock it automatically by supplying air to the release port or by using the manual release lever. In the 80mm bore class, this cylinder generates 2513N of push force and 2268N of pull force at 0.5 MPa.
This model includes a magnetic piston (-S) for precise position detection, compatible with AirTAC CMSE reed and DMSE solid-state sensors that seat neatly into the dual side grooves of the extruded aluminum barrel. To accommodate the locking hardware, the variable air cushion at the locker end is shorter at 22.5mm, compared to the 36mm cushion length on the free end. The cylinder operates efficiently across a 30-800 mm/s speed range.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X75S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X75S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAILF80X75S Is Used
Extended Load Safety
Holds a lifted load securely in the extended position during a power loss, preventing sudden collapses.
Stroke-End Clamping
Maintains continuous clamping force at the fully extended terminal without requiring constant air pressure.
Gate and Lift Holding
Locks heavy safety gates or lifting platforms in the open position, releasing only when commanded by air.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X75S the Right Lock Cylinder?
Choose this 80mm bore size when your application requires the 2513N thrust at 0.5 MPa, stepping up from a 63mm bore that provides 1559N, or down from a 100mm bore offering 3927N. Select the SAILF configuration specifically when the load must be safely held in the extended rod-out position; for holding a retracted load, the SAILB variant places the lock in the back cover instead. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke-end terminal, the BSAI clamp-lock cylinder is the correct alternative.
Remember that this SAIL lock is a static holding device that engages after the piston stops, not a dynamic brake for a moving rod. Valve selection is critical: never use a fast-exhaust valve with this cylinder, and always use an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the lock. For any application where human safety depends on the load remaining extended, add an independent safety measure. This unit features PT tapered port threads, a 25mm rod with an M20x1.5 thread, and supports mountings including Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, and TCM2.
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 SAILF80X75S FAQ
At 0.5 MPa, the 80mm bore provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The lock is spring-applied and air-released, holding the rod only at the extended stroke end. It engages after the cylinder stops and is released automatically via air pressure or manually via a lever; it does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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