Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke225 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM20×1.5
- 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 SAILF80X225
The AirTAC SAILF80X225 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, it automatically engages to hold the rod securely at the extended stroke end whenever release air is cut, maintaining the load without live pressure. This 80mm bore generates 2513N of push force and 2268N of pull force at 0.5MPa, making it highly effective for heavy end-of-stroke holding tasks.
The lock is a static holding device, not a dynamic brake for a moving rod. For mid-stroke clamping, a BSAI cylinder is required instead. Notably, the variable air cushion at the locker end is 22.5mm, slightly shorter than the 36mm cushion on the free end. The barrel uses an extruded aluminum profile with dual sensor grooves, and adding an -S magnet enables tracking with AirTAC CMSE reed or DMSE solid-state sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 225 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable (36 mm free end / 22.5 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SAILF80X225 Is Used
Vertical Lift Hold
Secures elevated loads at the extended stroke end, preventing sudden drops during power loss.
Gate Safety Lock
Holds heavy gates or guards open at the end of stroke without requiring continuous air pressure.
Clamp and Hold
Maintains extended clamping force on workpieces safely while air supply is exhausted.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225 the Right Lock Cylinder?
Select this 80mm bore when your application demands robust extended-position holding; if your force requirements are lower, the 63mm bore offers 1559N push at 0.5MPa. Choose this SAILF model specifically when the load must be secured at the rod-out position, whereas SAILB holds the retracted end. Always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. If human safety relies on the load staying extended, add an independent mechanical safety measure. This model uses a 3/8 PT port, a 25mm carbon steel rod, and standard 225mm stroke. Given the 225mm stroke, ensure proper guide support to prevent excessive side-load wear on the seals.
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 SAILF80X225 FAQ
At 0.5MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The lock is spring-applied and air-released, holding the rod at the extended stroke end only. It engages statically after the piston stops and is unlocked by supplying release air or using the manual lever.
Related AirTAC Lock & Standard Cylinders
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