Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450 is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 450mm 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.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450
The AirTAC SAILF100X450 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. In the 100mm bore class, it generates 5497N of push force and 5497N of pull force at 0.7 MPa, making it well-suited for heavy vertical lifting tasks.
A key design trait is the variable air cushioning, which measures 24mm at the locker end compared to 36mm at the free end, ensuring controlled deceleration before the lock engages. The carbon steel rod provides robust side-load resistance, and the unit operates at speeds between 30 and 800 mm/s. Position sensing is available by adding a magnet (-S) to work with AirTAC CMSE reed or DMSE electronic switches.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 450 mm |
| Acting type | Double acting, with lock |
| Port size | G1/2 |
| 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 / 24 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SAILF100X450 Is Used
Extended Lift Holding
Maintains heavy vertical platforms securely at the top extended stroke end during power loss, preventing sudden collapses without needing live air pressure.
Pallet Stop Gate
Acts as a rigid stop for heavy pallets on a conveyor, locking in the extended position to halt flow and absorbing the impact without drifting backward.
Clamp and Hold
Secures large workpieces at the outward stroke end for heavy machining operations, ensuring the part remains rigidly fixed even if the main air supply drops.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X450 the Right Lock Cylinder?
Choose this 100mm bore when a 80mm cylinder (providing 3518N push at 0.5 MPa) lacks the thrust to lift your payload, but a 125mm unit is physically oversized. Select the SAILF configuration specifically when the load must be held securely at the extended rod-out position; if your application requires holding at the retracted end, a SAILB variant is necessary instead. For this 450mm stroke, incorporating external guide rails is recommended to prevent excessive side-loading on the rod.
Remember that this lock is a static holding device that engages only after the cylinder stops at the stroke terminal, not a mid-stroke clamp or dynamic brake; for arbitrary position clamping, use a BSAI cylinder. Valve selection is critical: avoid fast-exhaust valves and use an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the lock. Always add an independent mechanical safety measure if human safety depends on the suspended load. Replacement specifications: 100mm bore, 450mm stroke, front locker, PT threaded ports, standard carbon steel rod, no magnet.
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 SAILF100X450 FAQ
At a 0.7 MPa operating pressure, the 100mm bore provides 5497N of push force and 5497N of pull force. At 0.9 MPa, the push force increases to 7068N.
The spring-applied, air-released lock engages automatically when the rod reaches the extended stroke end, holding the load statically without live pressure. It unlocks by supplying air to the release port or via the manual release lever. It does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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