Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 150mm 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
- Stroke150 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 SAILF80X150S
The AirTAC SAILF80X150-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock housed in the front cover. Because the lock sits forward, it engages when the piston reaches the extended stroke end, securely holding a rod-out load even if compressed air supply drops to zero. In this bore size, the cylinder generates 2513N of push force and 2268N of pull force at a 0.5 MPa operating pressure. The standard carbon steel rod provides durable service, and the -S magnet enables position sensing via CMSE reed or DMSE electronic solid-state switches.
A key mechanical detail is that the variable air cushion at the front locker end is shorter (22.5 mm) than the free-end cushion (36 mm). This cushion only decelerates the piston near stroke termination; the lock itself is what statically holds the load. The lock releases automatically via air pressure or manually via a lever, but you must avoid fast-exhaust valves and use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally lift the lock.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAILF80X150S Is Used
Vertical Lift Holding
Maintains an elevated load in the extended position during a power loss, using the mechanical lock to prevent sudden drops.
Pallet Stop Gate
Locks a raised diverter or stop gate at the extended stroke end to securely halt pallet traffic without needing continuous air supply.
Clamp and Hold Fixture
Extends to clamp a workpiece and holds the extended position rigidly, ensuring the part remains fixed during machining operations.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X150S the Right Lock Cylinder?
Select this 80mm bore when an application requires holding a load safely at the fully extended position without relying on live air pressure. If your force requirements are lower, stepping down to a 63mm bore yields 1402N of pull at 0.5 MPa; conversely, stepping up to a 100mm bore provides 3681N of pull. Choose this SAILF model over a SAILB variant specifically when the extended rod-out position is the safety-critical state. If your machine requires locking at an arbitrary mid-stroke position rather than the stroke end, select the BSAI clamp-lock cylinder instead.
For replacements, verify the 80mm bore, 150mm stroke, front locker position, and PT tapered port threads. The cylinder mounts via any ISO 15552 interface (Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2). Since the lock is a static holding device that engages after the cylinder stops (not a dynamic brake), human-safety-critical lifts must include an independent mechanical safety measure. Operating speed ranges from 30-800 mm/s.
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 SAILF80X150S FAQ
At a 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it can generate up to 513 kgf.
The lock is spring-applied and air-released, located in the front cover to hold the rod securely at the extended stroke end. It engages statically after the piston stops and unlocks automatically via air pressure or a manual lever. It is not a mid-stroke clamp; for locking at arbitrary positions, use the BSAI series.
Related AirTAC Lock & Standard Cylinders
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