Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 225mm 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.
- BoreØ80 mm
- Stroke225 mm
- Port sizeG3/8
- 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 SAILF80X225S
The AirTAC SAILF80X225-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. It delivers 2513N of push force at 0.5MPa and securely holds the rod at the extended stroke end. The lock is spring-applied and air-released, meaning it engages automatically when air is cut, maintaining the load without live pressure. Supplying air to the release port or using the manual lever disengages it.
This model includes a magnet for CMSE reed and DMSE electronic sensors. A notable design trait is the variable air cushion: the locker end features a 22.5mm cushion, slightly shorter than the 36mm cushion on the free end, ensuring compact deceleration without interfering with the locking mechanism. The carbon steel rod and M20x1.5 thread provide robust side-load resistance.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 225 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| 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 / 22.5 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SAILF80X225S Is Used
Extended Load Holding
Maintains vertical loads securely at the extended stroke end during power loss, preventing unexpected drops.
Pallet Stop Gate
Acts as a rigid stop for pallets on a conveyor, holding the extended position firmly without consuming air.
Safety Barrier Actuation
Keeps safety gates and barriers locked in the open, extended position until the release air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X225S the Right Lock Cylinder?
Choose this 80mm bore when an application requires 2513N push force at 0.5MPa; step down to a 63mm bore for 1559N, or up to a 100mm bore for 3927N. Select the SAILF configuration specifically when the load must be held at the extended rod-out position. If your process requires clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice instead.
Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; utilize an independent-exhaust solenoid valve. For human-safety critical lifted loads, always add an independent safety measure. Replacement match: 80mm bore, 225mm stroke, front lock, 3/8 PT port, -S magnet.
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 SAILF80X225S FAQ
At 0.5MPa, it provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The lock is spring-applied and air-released, holding the rod only at the extended stroke end. It engages automatically when air is cut and unlocks via air supply or a manual release lever. It does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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