Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 125mm 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
- Stroke125 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 SAILF160X125S
The AirTAC SAILF160X125-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. A spring-applied, air-released mechanism holds the rod securely at the extended stroke end, ensuring loads remain safely suspended even if air pressure drops completely. In this 160mm bore class, it generates a substantial 14074N of push force at 0.7MPa and 9425N of pull force, utilizing a robust 40mm carbon steel rod.
This model includes a magnet for position detection, compatible with AirTAC CMSE reed switches and DMSE solid-state sensors. The variable air cushion at the locker end is 28mm, intentionally shorter than the 50mm cushion at the free end to accommodate the locking mechanism. The lock releases automatically via air supply or manually via a lever, but never rely on the air cushion to hold a load—it only decelerates movement near stroke terminals.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 125 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 SAILF160X125S Is Used
Vertical Lift Hold
Secures heavy elevated platforms at the extended stroke end instantly upon air pressure loss, preventing sudden drops during power failures.
Clamp and Hold
Maintains high-pressure clamping force on large workpieces at the rod-out position without consuming continuous compressed air.
Gate Safety Lock
Keeps heavy industrial gates securely open at the full extended position, requiring an active air signal to release and close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125S the Right Lock Cylinder?
Choose this 160mm bore when an application demands high force and guaranteed holding at the rod-out position; if you need less force, the 125mm bore offers 8590N push at 0.7MPa. Select this SAILF model specifically because the load must be secured at the extended stroke end, whereas a SAILB variant holds at the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke terminal, select the BSAI clamp-lock cylinder instead.
Remember that the lock engages statically after the cylinder stops; it is not a dynamic brake for a moving rod. Valve selection is critical: never use a fast-exhaust valve, and always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For human-safety-critical loads, add an independent mechanical safety measure. Replacement requires matching the 160mm bore, 125mm stroke, front lock position, PT port threads, and the -S magnet option.
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 SAILF160X125S FAQ
At 0.7MPa, this 160mm bore cylinder provides 14074N of push force and 9425N of pull force. At 0.5MPa, it delivers 10053N push and 9425N pull.
The spring-applied, air-released lock engages statically when the rod reaches the extended stroke end. It unlocks automatically via air supply or manually via a lever. It does not clamp at mid-stroke; for arbitrary position locking, use BSAI.
Related AirTAC Lock & Standard Cylinders
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