Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X80
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X80 is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM16×1.5
- 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 SAILF63X80
The AirTAC SAILF63X80 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock housed in the front cover. A spring-applied, air-released pin engages when the piston reaches the extended stroke end, securely holding the rod out without requiring continuous live air pressure. Delivering 1559N of push force at 0.5MPa, it utilizes a 20mm carbon steel rod and a 3/8 PT port.
Because the lock occupies the front end, the variable air cushion on that side is shorter at 21mm compared to the 30mm cushion on the free rear end. The lock releases automatically via pneumatic supply or manually via a lever. For position sensing, adding the -S magnet enables compatibility with CMSE reed and DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X80 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X80 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 80 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 (30 mm free end / 21 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SAILF63X80 Is Used
Extended Lift Hold
Maintains a raised platform in the extended position during a power loss, preventing sudden drops.
Clamp and Hold
Pushes a workpiece forward and locks it securely at the extended stroke end without continuous air consumption.
Gate Safety Stop
Keeps a safety barrier open and rigidly held at the front stroke terminal until intentionally released.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X80 the Right Lock Cylinder?
Choose this 63mm bore when 50mm (982N push @0.5MPa) lacks the power to move your load, but 80mm (2513N) would be excessive. Select SAILF over SAILB specifically when the safety requirement is to hold the rod in the extended position rather than retracted. If your application demands locking at an arbitrary mid-stroke point rather than a stroke end, select the BSAI clamp-lock cylinder instead.
This model features a standard 80mm stroke and a PT tapered port. Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the pin; an independent-exhaust solenoid valve is required. For human-safety critical loads, 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 SAILF63X80 FAQ
At 0.5MPa, the push force is 1559N and the pull force is 1402N. At 0.7MPa, the push force is 2182N. The maximum operating pressure is 1.0MPa.
The spring-applied lock engages automatically when the rod reaches the extended stroke end in the front cover. It holds the load statically without live pressure. To unlock, you supply air to the release port or use the manual release lever. It does not lock at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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