Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160 is a genuine double-acting ISO 15552 profile cylinder with a Ø40mm bore, 160mm 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.
- BoreØ40 mm
- Stroke160 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM12×1.25
- 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 SAILF40X160
The AirTAC SAILF40X160 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages to hold the rod securely at the extended stroke end, cutting the release air to maintain the load without live pressure. In the 40mm bore class, it generates 879N of push force at 0.7 MPa and 528N of pull force at 0.5 MPa.
The lock is a static holding device, not a dynamic brake, meaning it engages after the piston stops. To accommodate the locking hardware, the variable air cushion at the front locker end is 20mm, notably shorter than the 27mm cushion at the rear free end. The cylinder uses a carbon steel rod with an M12x1.25 thread and PT tapered ports.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø40 mm |
| Stroke | 160 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (27 mm free end / 20 mm lock end) |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SAILF40X160 Is Used
Vertical Lift Hold
Secures a lifted vertical load at the extended top position, preventing a crash down when air pressure drops.
Pallet Stop Gate
Acts as a rigid stop extended across a conveyor line, holding firmly even during an air supply failure.
Clamp and Hold
Maintains outward clamping pressure on a part at the stroke end without consuming continuous live air.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160 the Right Lock Cylinder?
Choose this 40mm bore when an application requires a failsafe hold at the rod-out position; if you need to secure the load retracted, select the SAILB variant instead. Stepping up to the 50mm bore increases push force to 1374N at 0.7 MPa. For locking at an arbitrary mid-stroke point rather than a stroke end, the BSAI clamp-lock cylinder is the correct choice.
Critical valve selection is required: do not use a fast-exhaust valve, as back-pressure on the locker side can inadvertently release the lock. Use an independent-exhaust solenoid valve instead. If human safety depends on the load staying extended, add an independent safety measure. When replacing, match the 40mm bore, 160mm stroke, front locker position, PT port thread, and standard carbon steel rod (no -S magnet specified).
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 SAILF40X160 FAQ
At 0.5 MPa, the 40mm bore provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end. It unlocks automatically via air supply or manually via a lever, but it cannot clamp at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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