Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 800mm 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
- Stroke800 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 SAILF80X800
The AirTAC SAILF80X800 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock housed in the front cover. This spring-applied, air-released lock engages automatically when the piston reaches the extended stroke end, ensuring the load remains firmly held without requiring continuous live air pressure. Delivering a push force of 2513N and a pull force of 2268N at 0.5MPa, it utilizes a 25mm carbon steel rod with PT tapered port threading.
Unlike a plain SAI cylinder, this model provides true power-failure safety, though it functions strictly as a static holding device rather than a dynamic brake. The variable air cushion at the front locker end measures 22.5mm, which is intentionally shorter than the 36mm cushion found at the rear free end. For position sensing, adding a magnet (-S) allows the use of AirTAC CMSE reed or DMSE electronic solid-state sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAILF80X800 Is Used
Extended Load Holding
Maintains a lifted platform securely at the rod-out stroke end during a power loss, preventing sudden collapses without needing continuous air pressure.
Flow Control Diverter
Keeps a diverter arm locked in the outward extended position to route packages reliably, engaging only after the arm fully extends.
Safety Gate Barrier
Holds a protective barrier open at the front stroke terminal, requiring an intentional air-release signal to retract and allow access.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800 the Right Lock Cylinder?
Choose this 80mm bore when an application requires holding a load at the fully extended position; if your process only needs to hold at the retracted end, select the SAILB80X800 instead. If the load must be clamped at an arbitrary mid-stroke position rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct choice. For this 800mm stroke, incorporating an external guide rail is strongly recommended to prevent excessive side-load wear on the rod and seals.
Remember that the lock holds statically after the cylinder stops; it will not arrest a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock—always use an independent-exhaust solenoid valve. If human safety depends on the load staying extended, add an independent mechanical safety measure. To match this cylinder for a replacement, verify the 80mm bore, 800mm stroke, front locker position, 3/8 PT port, and the desired mounting style from the Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, or TCM2 options.
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 SAILF80X800 FAQ
At 0.5MPa operating pressure, the SAILF80X800 generates 2513N of push force and 2268N of pull force. At the maximum 1.0MPa pressure, it delivers a push force of 3518N and a pull force of 4523N.
The lock is spring-applied and air-released, located in the front cover to hold the rod only at the fully extended stroke end. It engages statically after the piston stops and can be unlocked automatically via air supply or manually using the release lever.
Related AirTAC Lock & Standard Cylinders
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