Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 250mm 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.
- BoreØ160 mm
- Stroke250 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 SAILF160X250
The AirTAC SAILF160X250 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages automatically when the piston reaches the extended stroke end, ensuring the load remains securely held without requiring continuous live air pressure. With a robust 40mm carbon steel rod and a substantial pull force of 9425N at 0.5 MPa, it is built for heavy-duty holding tasks.
Because the lock occupies the front end, the variable air cushion on that side is shortened to 28mm compared to the 50mm cushion on the free back end. The lock releases automatically via air supply to the release port or manually via the override lever, but you must use an independent-exhaust solenoid valve; back-pressure on the locker side can unintentionally release the lock, so fast-exhaust valves are strictly prohibited.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 250 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 SAILF160X250 Is Used
Vertical Lift Hold
Maintains an elevated 160mm bore lift platform securely at the extended stroke end during a power loss, preventing sudden drops.
Heavy Clamp Station
Holds heavy machined components at the rod-out position without consuming continuous air, stabilizing the part for secondary operations.
Safety Gate Lock
Keeps a large industrial safety gate open and mechanically locked at the extended end until the air-release port is actively pressurized.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250 the Right Lock Cylinder?
Choose this 160mm bore when 10053N of push force at 0.5 MPa is required, or step down to the 125mm bore if 6136N suffices. Select the SAILF configuration when the load must be held securely at the rod-out extended position; if your application requires holding at the retracted end, the SAILB variant is the correct choice.
Remember that this lock is a static holding device that engages only after the cylinder stops at the stroke terminal; it will not clamp a moving rod at an arbitrary mid-stroke point (for that, use the BSAI clamp-lock cylinder). For safety-critical vertical lifts where human safety depends on the load staying up, always add an independent mechanical safety measure. This 250mm stroke falls below the 1500mm maximum, but for any stroke of 300mm or more, ensure external guides are used to manage side loads.
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 SAILF160X250 FAQ
At 0.5 MPa operating pressure, the 160mm bore generates 10053N of push force and 9425N of pull force. The maximum force at 1.0 MPa is 2050 kgf.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold after the cylinder stops, and unlocks automatically via air supply or manually via a lever; it does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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