Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X300S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X300S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm 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.
- BoreØ160 mm
- Stroke300 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 SAILF160X300S
The AirTAC SAILF160X300-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because it is a front-locker (SAILF), a spring drives a lock pin into the carbon steel rod when the piston reaches the extended stroke end, securely holding the load in the rod-out position without requiring live air pressure. Supplying air to the release port automatically unlocks it, or operators can use the manual release lever. In the 160mm bore class, this actuator generates a substantial 14074N of push force at 0.7 MPa, making it well-suited for heavy-duty holding tasks.
This model includes the -S magnet option for seamless position detection with AirTAC CMSE reed and DMSE electronic solid-state sensors. The variable air cushion at the locker end is specifically machined shorter (28mm) compared to the free end (50mm) to physically accommodate the locking hardware. The lock is a static holding device that engages only after the cylinder stops, meaning it will not brake a moving rod, and it clamps strictly at the stroke terminal rather than at an arbitrary mid-stroke point.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X300S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X300S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 300 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 SAILF160X300S Is Used
Extended Load Holding
Secures heavy lifted platforms in the extended rod-out position during power loss, utilizing the front mechanical lock to prevent gravity-driven collapses.
Heavy Press Hold
Maintains high clamping force at the extended stroke end for large press assemblies, keeping the workpiece locked without continuously consuming compressed air.
Safety Gate Locking
Keeps heavy safety gates and industrial barricades firmly open at the full stroke terminal, engaging the lock automatically once the cylinder reaches the extended end.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X300S the Right Lock Cylinder?
Choose this 160mm bore if your application demands high force, as it provides 14074N of push at 0.7 MPa; stepping down to a 125mm bore yields 8590N, while moving up to a 200mm bore offers 21991N. Select the SAILF configuration when the load must be secured in the extended position, and opt for SAILB if the holding requirement is at the retracted stroke end. If your process requires locking at an intermediate mid-stroke position rather than the stroke terminal, the AirTAC BSAI clamp-lock cylinder is the correct choice instead. For any stroke length of 300mm or more, such as this model, incorporating external side-load guides is strongly recommended to prevent rod binding and premature seal wear.
When replacing this cylinder, verify the 160mm bore, 300mm stroke, front locker position, 3/4 inch PT tapered port thread, and the -S magnet option. To maintain lock integrity, never use a fast-exhaust valve with this actuator; always install an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the spring-applied lock. Remember that while the lock securely holds the load without live pressure, safety-critical applications that suspend heavy loads over personnel should include an additional independent mechanical safety measure.
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 SAILF160X300S FAQ
The 160mm bore generates a push force of 14074N at 0.7 MPa and a pull force of 9425N at 0.7 MPa. At the maximum operating pressure of 1.0 MPa, it achieves a push force of 18095N.
The lock is spring-applied and air-released, engaging automatically when the piston reaches the extended stroke end to hold the load statically. It unlocks by supplying air to the release port or via a manual lever, but it only holds at the stroke terminal, not mid-stroke.
Related AirTAC Lock & Standard Cylinders
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