Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm 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.
- BoreØ200 mm
- Stroke350 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- 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 SAILF200X350S
The AirTAC SAILF200X350-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock housed in the front cover. This built-in mechanism holds the rod securely at the extended stroke end, maintaining the load position without requiring continuous live air pressure. In the 200mm bore class, it delivers a robust 15708N push force at 0.5MPa and utilizes a 40mm carbon steel rod with an M36x2 thread to handle high side-load stresses.
Because the lock engages statically at the stroke terminal rather than acting as a dynamic brake, the variable air cushion at the locker end is engineered shorter (28mm) than the free end cushion (50mm) to optimize end-of-stroke deceleration. This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, and it features PT tapered port threads. For unlocking, operators can supply air to the release port for automatic operation or use the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 350 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.
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 (Ø200mm)
| 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.
Where the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S Is Used
Heavy Vertical Lifts
Secures elevated platforms or heavy lifting arms at the extended stroke end, preventing sudden drops if air pressure is lost during operation.
Large Press Fixtures
Holds heavy clamping arms firmly in the extended position without consuming continuous air, ensuring stable positioning during heavy manufacturing pauses.
Safety Gate Holding
Maintains large industrial safety gates in the open, extended position, requiring an intentional air release signal to unlock and close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X350S the Right Lock Cylinder?
Select this 200mm bore cylinder when an application demands heavy thrust (15708N push at 0.5MPa) and failsafe load holding at the extended stroke end. If the project requires holding the load at the retracted position instead, the SAILB200X350-S is the correct choice. Conversely, if the mechanism must freeze the rod at an arbitrary mid-stroke point rather than a stroke terminal, the BSAI clamp-lock cylinder is required, as the SAIL lock only engages at the end of the stroke.
When integrating this model, adhere strictly to valve selection guidelines: do not use a fast-exhaust valve, and utilize an independent-exhaust solenoid valve, because back-pressure on the locker side can inadvertently release the lock. Furthermore, if human safety relies on the load remaining elevated, always add an independent mechanical safety measure. For replacement, verify the 200mm bore, 350mm stroke, front locker position, PT port threads, and the -S magnet. Given the 350mm stroke, ensure external guide rails are used to prevent excessive side-loading on the 40mm 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 SAILF200X350S FAQ
At 0.5MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At 0.7MPa, the push force increases to 21991N.
The lock is spring-applied and air-released, engaging statically only when the piston reaches the extended stroke end in the front cover. It is not a mid-stroke clamp or dynamic brake; it unlocks automatically via air supply or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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