Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300 is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Lock positionFront cover
- Rod threadM20×1.5
- UnlockAir + manual
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300
The AirTAC SAILF100X300 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 extended stroke end whenever the release air is cut, dropping the load safely without relying on live pressure. Delivering 3927N of push force at 0.5MPa, it handles heavy lifting tasks with ease.
The lock is strictly a static holding device that engages after the piston stops, rather than a dynamic brake for a moving rod. To accommodate the locking hardware, the variable air cushion at the front locker end is shorter at 24mm compared to the 36mm cushion on the free back end. The carbon steel rod provides durable side-load resistance, and the 1/2-inch PT tapered ports ensure high flow for its 30-800mm/s operating speed range.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAILF100X300 Is Used
Extended Lift Safety
Holds a vertical load securely in the extended rod-out position during a power loss, preventing sudden drops without needing continuous air pressure.
Flow Control Gate
Locks a heavy diverter or gate open at the end of the stroke to maintain a clear path for materials until the release air is actively supplied.
End-of-Stroke Clamp
Maintains maximum clamping force on a part at the fully extended position, keeping the workpiece secured while pressure is removed from the system.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300 the Right Lock Cylinder?
Choose this 100mm bore when a 63mm bore (1559N push at 0.5MPa) is insufficient for your extended-load holding requirements, or step down from a 125mm bore (6136N) to save space. Select the SAILF configuration specifically when the load must be secured in the rod-out position; if you need to hold the retracted position, choose the SAILB variant instead. Because the lock only engages at the stroke terminal, applications requiring intermediate clamping should use the BSAI clamp-lock cylinder instead.
For reliable operation, do not use a fast-exhaust valve with this cylinder; back-pressure on the locker side can inadvertently release the lock, so an independent-exhaust solenoid valve is required. If human safety depends on the load remaining extended, always add an independent secondary safety measure. When replacing this unit, match the 100mm bore, 300mm stroke, front locker position, PT port threads, and mounting type. For this 300mm stroke, ensure external guide rails are used to prevent excessive side-loading on the rod. Note that position sensing requires a magnet (-S option) to use CMSE reed or DMSE electronic switches.
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 SAILF100X300 FAQ
At 0.5MPa operating pressure, the 100mm bore provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The lock is spring-applied and air-released, holding the rod only at the extended stroke end. It engages statically after the cylinder stops and is released by supplying air to the release port or by using the manual release lever. It does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF100X300
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.