Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X25S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X25S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 25mm 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.
- BoreØ160 mm
- Stroke25 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- 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 SAILF160X25S
The AirTAC SAILF160X25-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, cutting the release air automatically drives the lock pin into the rod, securely holding the load at the extended stroke end without relying on live pressure. In this 160mm bore class, it generates 10053N of pull force at 0.5MPa, making it highly capable for heavy lifting tasks. Unlocking is achieved automatically via air supply or by using the manual release lever.
This unit includes the -S magnet option for seamless position detection with AirTAC CMSE reed and DMSE electronic solid-state sensors. A distinct mechanical feature is the shorter variable air cushion at the locker end (28mm) compared to the free end (50mm), which accommodates the lock hardware. The carbon steel rod and PT tapered port threads further ensure robust sealing and high side-load resilience in demanding industrial environments.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X25S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X25S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 25 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable (50 mm free end / 28 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 SAILF160X25S Is Used
Vertical Lift Safety
Secures elevated heavy loads at the extended stroke end instantly upon air pressure loss, preventing sudden drops on lifting machinery.
Clamp and Hold
Maintains constant clamping pressure on large workpieces at the stroke terminal without consuming continuous compressed air.
Gate and Barrier Control
Locks heavy industrial gates or doors in the open extended position, resisting external environmental forces until unlocked.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X25S the Right Lock Cylinder?
Choose this 160mm bore when substantial force is required; if your application needs less thrust, stepping down to a 125mm bore provides 5734N of pull force at 0.5MPa, whereas moving up to a 200mm bore yields 15080N. Select the SAILF configuration when the mechanism must maintain the rod in the extended position during a power loss, and choose SAILB if the load must be held retracted. If your process requires clamping at an arbitrary mid-stroke point rather than a static stroke-end hold, the AirTAC BSAI clamp-lock cylinder is the correct alternative.
For safe implementation, remember this is a static holding lock that engages after the cylinder stops, not a dynamic brake for a moving rod. Valve selection is critical: never use a fast-exhaust valve with this lock cylinder, as back-pressure on the locker side can unintentionally release the lock; always use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, add an independent safety measure. To replace this unit, match the 160mm bore, 25mm stroke, front lock position, PT port threads, and the -S magnet option, utilizing standard ISO 15552 mountings like FA, FB, or TC.
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 SAILF160X25S FAQ
At a 0.5MPa operating pressure, the 160mm bore generates 10053N of pull force and 14074N of push force. The maximum operating pressure is 1.0MPa.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end in the front cover. It provides a static hold after the cylinder stops and is unlocked automatically via air supply or manually via a release lever.
Related AirTAC Lock & Standard Cylinders
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