Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S
The AirTAC SAILF100X900-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock in the front cover. This mechanism engages automatically to hold the rod securely at the extended stroke end whenever the release air is cut, ensuring your load remains safely positioned without consuming live pressure. Generating 5497N of push force at 0.7MPa, it features a carbon steel rod and a built-in magnet for position sensing.
Because the lock physically occupies the front end, the variable air cushion on that locker side is shorter at 24mm compared to the 36mm cushion on the free end. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors for precise end-of-stroke detection. You can unlock the rod automatically by supplying air to the release port, or manually via the release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAILF100X900S Is Used
Extended Load Holding
Maintains vertical loads safely at the extended stroke end during power loss, preventing sudden drops without needing continuous air pressure.
Overhead Conveyor Stops
Secures raised product stops and diverters on an overhead line in the outward position, keeping the path clear until air is restored.
Safety Gate Locking
Holds heavy machine safety gates firmly open at the end of stroke, requiring an intentional air release signal to close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900S the Right Lock Cylinder?
Choose this 100mm bore when an 80mm cylinder (providing 3518N push at 0.7MPa) lacks the thrust for your vertical lift, but a 125mm bore is oversized. This SAILF variant is specified when the load must be held at the extended rod-out position; select a SAILB model instead if your safety hold is required at the retracted position. Remember that this lock is a static holding device that engages only after the piston stops at the stroke terminal—it will not clamp a rod at an arbitrary mid-stroke point, which requires a BSAI clamp-lock cylinder instead.
For reliable operation, avoid using fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock; always use an independent-exhaust solenoid valve. If human safety depends on the load staying elevated, add an independent safety measure. With a 900mm stroke, guide the load properly to prevent excessive side-loading on the carbon steel rod. Replacement matches require 100mm bore, 900mm stroke, front locker, PT 1/2 ports, and the -S magnet option.
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 SAILF100X900S FAQ
At 0.7MPa operating pressure, this 100mm bore cylinder generates 5497N of push force and 3681N of pull force. It can achieve a maximum push force of 7068N at 0.9MPa.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end. It holds the load statically without live pressure; supply air to the release port or use the manual lever to unlock it.
Related AirTAC Lock & Standard Cylinders
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