Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800 is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm 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.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800
The AirTAC SAILF100X800 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. Because the lock engages when the piston reaches the extended stroke end, it securely holds the rod-out position without requiring live pressure. Operating at 0.5 MPa, this 100mm bore generates 5497N of push force and 3927N at 0.9 MPa, making it robust for heavy load manipulation.
The lock utilizes a spring to drive a pin into the rod upon loss of release air, while supplying air to the release port enables automatic unlocking, with a manual release lever available as an override. Notably, the variable air cushion at the locker end is shorter at 24mm compared to 36mm on the free end, a design adjustment accommodating the locking hardware. The standard carbon steel rod and PT tapered port threads ensure durable, leak-free connections.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAILF100X800 Is Used
Extended Lift Hold
Maintains a vertical load securely at the top extended stroke end during a power loss event, preventing sudden drops.
Pallet Stop Gate
Acts as a rigid stop barrier in the extended position, holding heavy pallets firmly in place without consuming continuous air.
Clamp and Hold
Secures a workpiece at the outward stroke terminus, keeping the part firmly clamped while downstream operations occur.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X800 the Right Lock Cylinder?
Select this 100mm bore when an application demands substantial end-of-stroke holding power on the extended side; if lower force is acceptable, an 80mm bore provides 3518N at 0.5 MPa. Choose SAILF for holding the rod-out position, whereas SAILB secures the retracted position. If your application requires clamping at an arbitrary mid-stroke point rather than a stroke-end static hold, the BSAI clamp-lock cylinder is the correct choice. Remember that this lock engages only after the cylinder has stopped, meaning it functions as a static holding device rather than a dynamic brake for a moving rod.
For replacement, verify the 100mm bore, 800mm stroke, front locker position, 1/2 inch PT port, and mounting style. The cylinder supports Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, and TCM2 mounts. Because the stroke is 800mm, ensure external guide rails are used to prevent excessive side-loading on the rod. Crucially, do not use a fast-exhaust valve with this lock cylinder; always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. If human safety depends on the load staying extended, add an independent 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 SAILF100X800 FAQ
At 0.5 MPa operating pressure, the 100mm bore provides 5497N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end to hold the load statically. It unlocks automatically by supplying air to the release port or via a manual release lever; it does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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