Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900 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
- 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 SAILF100X900
The AirTAC SAILF100X900 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This safety mechanism engages automatically to hold the rod securely at the fully extended stroke end whenever the release air is cut, maintaining the load without live pressure. Delivering 5497N of push force at 0.7 MPa, it utilizes a 25mm carbon steel rod and a 1/2 inch PT tapered port.
Because the lock occupies the front end, the variable air cushion on that side is shorter at 24mm compared to the 36mm cushion on the free end. The lock releases automatically via air supply or manually via a lever, but avoid fast-exhaust valves; back-pressure on the locker side can unintentionally lift the lock, so an independent-exhaust solenoid valve is required.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900 |
|---|---|
| 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 SAILF100X900 Is Used
Extended Lift Hold
Secures vertical lifts and elevators in the extended position automatically during power loss, preventing sudden drops.
Flow Control Gate
Locks a diverter gate open at the full stroke end without consuming continuous air pressure.
Safety Barrier Hold
Maintains a protective barrier fully extended during machine operation, requiring a deliberate air release to retract.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X900 the Right Lock Cylinder?
Choose this 100mm bore when the 80mm class (3518N push at 0.7 MPa) is insufficient, or step up to the 125mm bore (8590N) for heavier loads. Select the SAILF configuration specifically when the load must be secured in the extended position; choose SAILB if the retracted state requires holding. If your application demands locking at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead.
This cylinder safely holds a static load at the extended end after stopping, but it is not a dynamic brake. For human-safety critical suspended loads, add an independent mechanical safety measure. At 900mm stroke, use a guide mechanism to prevent excessive side-load wear on the seals. Replacement parts must match the 100mm bore, 900mm stroke, front lock position, PT port thread, and standard carbon steel rod.
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 SAILF100X900 FAQ
At 0.7 MPa operating pressure, the 100mm bore provides 5497N of push force and 3681N of pull force. The maximum push force is 7068N at 0.9 MPa.
The lock is spring-applied and air-released, engaging only when the piston reaches the fully extended stroke end. It provides a static hold after the rod stops, not a dynamic brake. Unlocking occurs automatically via air supply to the release port or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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