Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225 is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 225mm 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
- Stroke225 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 SAILF200X225
The AirTAC SAILF200X225 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock housed in the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a lock pin into the rod to securely hold the load at the extended stroke end without requiring live pressure. This 200mm bore size delivers 15708N of push force and 15080N of pull force at 0.5MPa, making it suitable for safely securing massive vertical loads during power loss.
The integrated lock engages statically after the piston reaches the extended terminal, meaning it is not a dynamic brake for a moving rod. To ensure proper lock engagement, the variable air cushion at the locker end is 28mm, which is shorter than the 50mm cushion on the free end. You can unlock the rod automatically by supplying air to the release port or by using the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 225 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 SAILF200X225 Is Used
Heavy Lift Safety
Secures massive raised platforms in the extended position, preventing catastrophic drops if compressed air pressure suddenly fails.
Press Hold
Maintains maximum clamping force at the extended stroke end without consuming continuous air, saving energy during long holding cycles.
Gate Actuation
Locks heavy industrial gates or doors in the open position mechanically, ensuring they remain securely held until actively released.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225 the Right Lock Cylinder?
Choose this SAILF model when your application requires the load to be held securely at the extended rod-out position. If holding at the retracted end is needed instead, select the SAILB variant. For applications requiring mid-stroke clamping rather than end-of-stroke holding, the BSAI clamp-lock cylinder is the correct choice. If you need to adjust force capacity, the neighboring 160mm bore provides 10053N push force at 0.5MPa.
When matching a replacement, verify the 200mm bore, 225mm stroke, front locker position, 3/4 PT port threads, and carbon steel rod. Remember that the lock provides a static hold only; avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock. Use an independent-exhaust solenoid valve instead. If human safety relies on the load staying up, add an independent safety measure.
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 SAILF200X225 FAQ
At 0.5MPa, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. The maximum force at 1.0MPa is 3204 kgf.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end. It unlocks automatically via air supply or manually via a lever. It is not a mid-stroke clamp or dynamic brake.
Related AirTAC Lock & Standard Cylinders
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