Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225S 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 SAILF200X225S
The AirTAC SAILF200X225-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 lock engages automatically when the piston reaches the extended stroke end, securely holding the rod-out position without requiring continuous live air pressure. In the 200mm bore class, it generates a substantial 15708N of push force and 15080N of pull force at 0.5 MPa, making it well-suited for heavy-duty load control.
Because the lock is physically integrated into the front end cap, the variable air cushion on that locker end is notably shorter, measuring 28mm compared to the 50mm cushion length on the free back end. The standard carbon steel rod features an M36x2 thread, and the -S magnet option allows for precise position detection using AirTAC CMSE reed or DMSE solid-state electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225S |
|---|---|
| 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 SAILF200X225S Is Used
Heavy Lift Holding
Maintains the extended position of heavy vertical lifts during power loss, utilizing the spring-applied front lock to safely secure the load without continuous air pressure.
Gate Actuation
Drives and securely holds large industrial gates or bulkheads in the open rod-out position, engaging the mechanical lock only after the piston reaches the extended stroke end.
Press Retention
Applies 15708N of push force at 0.5 MPa to extend and hold heavy press tooling, ensuring the workpiece remains clamped at the terminal extended position.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X225S the Right Lock Cylinder?
Choose this 200mm bore cylinder when an application requires holding a massive extended load, such as a heavy gate or lifted platen, at the rod-out stroke end. If your force requirements are lower, stepping down to a 160mm bore reduces the push force to 10053N at 0.5 MPa while retaining the same ISO 15552 mounting interface. If the load must be clamped at an arbitrary mid-stroke position rather than at the extended terminal, select the AirTAC BSAI clamp-lock cylinder instead of this SAILF model.
The SAILF lock provides a static hold after the cylinder stops; it is not a dynamic brake for a moving rod. Valve selection is critical: never use a fast-exhaust valve with this lock cylinder, as back-pressure on the locker side can unintentionally release the lock—always use an independent-exhaust solenoid valve. For any safety-critical lifting application where human safety depends on the load staying up, add an independent mechanical safety measure as well. When ordering a replacement, verify the 225mm stroke, front locker position, PT 3/4 port, and the -S magnet. For this 225mm stroke, ensure your mounting setup includes adequate side-load guidance to prevent rod binding.
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 SAILF200X225S FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder generates 15708N of push force and 15080N of pull force. It can achieve a maximum push force of 28274N at the maximum rated pressure of 1.0 MPa.
The lock is spring-applied and air-released, engaging automatically when the piston reaches the extended stroke end in the front cover. To unlock it, you supply air to the release port for automatic unlocking or use the manual release lever. It provides a static hold only at this stroke end, not at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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