Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 150mm 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
- Stroke150 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 SAILF80X150
The AirTAC SAILF80X150 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages when the piston reaches the extended stroke end, securely holding the load without requiring continuous live air pressure. Delivering a push force of 2513N at 0.5MPa, it uses a carbon steel rod and PT tapered ports.
Unlike a plain SAI cylinder, this model retains the rod at the outboard terminal position. To unlock, you simply supply air to the release port or use the manual override lever. The variable air cushion at the locker end is 22.5mm, intentionally shorter than the 36mm cushion on the free end to accommodate the locking hardware.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAILF80X150 Is Used
Vertical Lift Holding
Maintains an elevated load at the extended stroke end during a power loss, preventing sudden drops in lifting machinery.
Conveyor Pallet Stop
Locks a pneumatic stopper blade in the rod-out position to hold pallets securely at an assembly station without continuous air consumption.
Safety Gate Lock
Keeps a protective machine guard extended and firmly locked until the release air is actively supplied, ensuring operator safety.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150 the Right Lock Cylinder?
Select this 80mm bore when an application requires 2513N of push force at 0.5MPa, or 3518N at 0.7MPa, alongside a secure hold at the rod-out position. If your load demands less force, a 63mm bore offers 1559N at 0.5MPa; for heavier lifting, stepping up to a 100mm bore yields 3927N. Choose this SAILF variant specifically when the extended position must be maintained during a power loss, whereas a SAILB holds the retracted end.
Remember that this lock is a static holding device, not a dynamic brake for a moving rod, and it only engages at the stroke terminal. If your process requires clamping at an arbitrary mid-stroke point, select the BSAI clamp-lock cylinder instead. Furthermore, avoid using fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock; an independent-exhaust solenoid valve is required. For any safety-critical vertical lift, always add an independent mechanical 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 SAILF80X150 FAQ
At 0.5MPa, the push force is 2513N and the pull force is 2268N. At 0.7MPa, the push force increases to 3518N. The maximum operating pressure is 1.0MPa.
The lock is spring-applied and air-released, engaging statically only when the rod reaches the extended stroke end. It does not clamp mid-stroke. To release the lock, you must supply air to the release port or use the manual override lever.
Related AirTAC Lock & Standard Cylinders
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