
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X1000S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 1000mm 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.
The AirTAC SAILF80X1000-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because it is an F-series model, the spring-applied, air-released lock engages when the rod reaches the extended stroke end, securely holding a load without consuming live air. In the 80mm bore class, this actuator generates 2513N of push force and 2268N of pull force at 0.5 MPa. A carbon steel piston rod comes standard, and the -S suffix indicates an integrated magnet for position sensing with AirTAC CMSE reed or DMSE electronic switches.
This long-stroke unit operates at speeds from 30 to 800 mm/s and uses 3/8 PT tapered ports. The variable air cushion at the locker end is 22.5mm, which is intentionally shorter than the 36mm cushion on the free end to accommodate the locking hardware. The lock automatically releases when supply air is applied to the release port, or you can use the manual release lever during setup.
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X1000S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 1000 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.
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.
| 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.
Secures vertical lifts in the extended position during power loss, preventing gravity-driven drops without needing continuous air pressure.
Acts as a robust end-of-stroke stopper on wide conveyors, locking out the 1000mm rod to halt large pallets safely.
Holds machine safety gates open at the full extended position, requiring an intentional air signal to release and close.
Choose this 80mm bore when an application requires more force than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but does not need the bulk of a 100mm unit (3927N). Select the SAILF configuration specifically when the load must be secured at the extended position, whereas a SAILB variant holds the retracted rod. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke end, the BSAI clamp-lock cylinder is the correct choice instead.
Because this model features a 1000mm stroke, which exceeds the standard maximum of 1500mm for this bore, it is built as a non-standard stroke and requires careful side-load management; always use external guide rails to prevent rod binding. The lock is a static holding device that engages after the piston stops, not a dynamic brake for moving rods. Avoid fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock; use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, add an independent mechanical safety measure. Replacement parts must match the 80mm bore, 1000mm stroke, front locker position, PT threads, and -S magnet.
Quick checklist
At 0.5 MPa, this 80mm bore cylinder 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, engaging only at the extended stroke end to hold the load statically. It releases automatically via air pressure or manually via a lever, but it is not a mid-stroke clamp.
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