
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X160S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 160mm 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 SAILF200X160-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a pin into the carbon steel rod to hold the load securely at the extended stroke end without consuming live pressure. In this 200mm bore class, it generates a push force of 15708N and a pull force of 15080N at 0.5MPa, peaking at 3204kgf at 1.0MPa.
This unit includes a magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic solid-state switches. To accommodate the locking hardware, the variable air cushion at the front locker end is shorter (28mm) than the 50mm cushion at the back. You can release the lock automatically by supplying air to the release port or manually via the lever, though safety-critical suspended loads still require an independent mechanical backup.
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X160S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 160 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable (50 mm free end / 28 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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 massive elevated platforms in the extended position during a power loss, using the spring-applied lock to prevent gravity-driven descent without needing continuous air pressure.
Maintains maximum outward clamping force at the extended stroke end for heavy fabrication tasks, releasing only when air is explicitly supplied to the release port.
Locks a heavy industrial gate in the open extended position to ensure safe machinery access, engaging automatically at the stroke terminal to block unintended closure.
Choose this 200mm bore when an application demands massive thrust that a 160mm bore cannot provide—the 160mm tops out at 10053N push at 0.5MPa, whereas this 200mm achieves 15708N. Select the SAILF configuration when the rod must be locked in the extended position; if you need to hold the retracted rod-in state instead, use a SAILB model. For applications requiring the load to be clamped at an arbitrary mid-stroke point rather than a stroke end, the BSAI clamp-lock cylinder is the correct choice.
The lock engages only after the piston stops at the extended terminal, acting as a static holding device rather than a dynamic brake for a moving rod. Pneumatic routing is critical: never use a fast-exhaust valve with this cylinder, as back-pressure on the locker side can inadvertently release the lock—always use an independent-exhaust solenoid valve. This 160mm stroke operates within the 30-500mm/s speed range, uses a 3/4 PT port, and supports mountings like Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
At 0.5MPa, it provides a push force of 15708N and a pull force of 15080N. At its maximum operating pressure of 1.0MPa, the push force reaches 28274N, equivalent to 3204kgf.
The spring-applied, air-released lock engages only when the rod reaches the extended stroke end. It holds statically after stopping and is not a mid-stroke clamp or dynamic brake. You can unlock it automatically via air pressure or manually, but avoid fast-exhaust valves to prevent back-pressure from releasing the lock.
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