Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 450mm 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
- Stroke450 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 SAILF200X450S
The AirTAC SAILF200X450-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages automatically when the piston reaches the extended stroke end, securely holding the rod-out position. With a robust 200mm bore generating 15708N of thrust at 0.5 MPa, it is built for massive vertical loads. The standard carbon steel rod provides high tensile strength for heavy-duty cycles.
This unit includes a magnetic piston (-S) for precise position detection with AirTAC CMSE reed and DMSE solid-state sensors. The variable air cushion at the locker end measures 28mm, which is intentionally shorter than the 50mm cushion at the free end to accommodate the locking mechanism. Remember that the lock provides a static hold after the cylinder stops; it is not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAILF200X450S Is Used
Overhead Lift Safety
Holds heavy lifted payloads securely in the extended position instantly if air pressure drops, preventing sudden falls.
Press Hold
Maintains maximum clamping force at the extended stroke end without continuously consuming compressed air.
Heavy Gate Control
Locks massive industrial gates or doors in the open, rod-out position during power loss or maintenance.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450S the Right Lock Cylinder?
Choose this 200mm bore if your application requires the maximum standard thrust class, delivering 15708N push and 15080N pull at 0.5 MPa. If your force requirements are lower, stepping down to a 160mm bore still yields 10053N of push force at 0.5 MPa. Select the SAILF configuration when the load must be securely held in the extended position upon power loss, whereas a SAILB variant holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice.
For this 450mm stroke, applying adequate side-load guidance is critical to prevent rod binding and premature seal wear. The lock holds the load statically at the stroke terminal without live pressure, but never use a fast-exhaust valve with this cylinder; always specify an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For human-safety-critical overhead loads, add an independent mechanical safety measure. Replacement requires matching the 200mm bore, 450mm stroke, front lock position, 3/4 PT port threads, and the -S magnet.
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 SAILF200X450S FAQ
At 0.5 MPa it provides 15708N push and 15080N pull. At 0.7 MPa it provides 21991N, and at 0.9 MPa it provides 28274N.
The lock is spring-applied and air-released, engaging statically when the rod reaches the extended stroke end. To unlock, supply air to the release port or use the manual lever. It does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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