Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 50mm 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
- Stroke50 mm
- Port sizeG1/2
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S
The AirTAC SAILF100X50-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages when the piston reaches the extended stroke end, securely holding the rod out without relying on live pressure. In this bore size, the cylinder generates 5497N of push force at 0.7 MPa, making it highly capable for substantial load manipulation.
The integrated lock is a static holding device, not a dynamic brake for a moving rod. To unlock the mechanism, you can supply release air to the dedicated port for automatic retraction or use the manual release lever. The -S magnet option allows seamless integration with AirTAC CMSE reed and DMSE electronic solid-state sensors for precise end-position detection. Additionally, the variable air cushion at the locker end is 24 mm, intentionally shorter than the 36 mm cushion on the free end to accommodate the locking hardware.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAILF100X50S Is Used
Extended Load Holding
Maintains the rod in the extended position during power loss, securely supporting vertical loads without requiring continuous air pressure.
Out-Stroke Clamping
Applies 5497N of push force at 0.7 MPa and firmly locks the part at the forward stroke end for secure machining or welding operations.
Gate and Guard Safety
Keeps heavy safety barriers and lifting gates fully open and mechanically locked, utilizing the manual release lever for controlled operation.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X50S the Right Lock Cylinder?
Choose this 100 mm bore when you need heavier thrust than the 80 mm option (which provides 3518N push at 0.7 MPa), but do not require the massive 8590N push of the 125 mm size. Select the SAILF configuration specifically when your application demands the load is mechanically secured at the rod-out position. If your process requires clamping at an arbitrary mid-stroke point rather than the extended terminal, you must use the BSAI clamp-lock cylinder instead.
Remember that the lock holds the load statically only at the stroke end. Never use a fast-exhaust valve with this cylinder; instead, install an independent-exhaust solenoid valve, because back-pressure on the locker side can unintentionally release the lock. For human safety applications where failure poses a risk, always add an independent safety measure. Replacement specs: 100 mm bore, 50 mm stroke, front locker, PT port thread, carbon steel rod, -S magnet, and standard mountings including Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2.
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 SAILF100X50S FAQ
At an operating pressure of 0.7 MPa, this 100 mm bore cylinder generates 5497N of push force and 3681N of pull force. The maximum push force reaches 7068N at 0.9 MPa.
The lock is spring-applied and air-released, engaging statically when the piston reaches the extended stroke end in the front cover. It is unlocked automatically by supplying release air or manually via the lever, and it is not designed to stop a moving rod.
Related AirTAC Lock & Standard Cylinders
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