Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 80mm 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
- Stroke80 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 SAILF80X80
The AirTAC SAILF80X80 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock inside the front cover. Because the lock is spring-applied and air-released, removing the release air pressure forces a lock pin into the carbon steel rod, securely holding the load at the extended stroke end without requiring live pressure. Delivering 2513N of push force at 0.5MPa, it provides robust load holding for vertical or horizontal movements.
This model features a 3/8 PT port and a 25mm rod thread. To accommodate the locking hardware, the variable air cushion at the front locker end is shorter (22.5mm) compared to the 36mm cushion on the free back end. The lock releases automatically via air supply or manually via a lever, but avoid using fast-exhaust valves as back-pressure on the locker side can unintentionally release the lock.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAILF80X80 Is Used
Extended Load Holding
Maintains vertical lifts securely at the extended stroke end during power loss, preventing gravity-driven drops.
Clamp and Hold
Locks a workpiece firmly at the outward stroke terminal without consuming continuous compressed air.
Safety Gate Hold
Keeps heavy safety barriers and gates open at the extended position until air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80 the Right Lock Cylinder?
Choose this 80mm bore when 0.5MPa push thrust of 2513N is required, stepping down to the 63mm bore (1559N) for lighter loads or up to the 100mm bore (3927N) for heavier demands. Select the SAILF configuration when the load must be held at the extended rod-out position, whereas SAILB holds the retracted position. If your application requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, use the BSAI clamp-lock cylinder instead.
Remember that the SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. For safety-critical suspended loads, always add an independent mechanical safety measure. Replacement matches require an 80mm bore, 80mm stroke, front locker position, 3/8 PT port, and your desired mounting from the ISO 15552 interchangeable set (Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2).
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 SAILF80X80 FAQ
At 0.5MPa it provides 2513N push and 2268N pull. At 0.7MPa push is 3518N, and at 0.9MPa it is 4523N. The maximum push force is 513kgf at 1.0MPa.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end. It unlocks automatically by supplying release air or manually via a lever, but it cannot clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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