Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160S 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 SAILF40X160S
The AirTAC SAILF40X160-S is a double-acting, single-rod 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 drives a lock pin into the rod to hold the load securely at the extended stroke end without requiring live pressure. You can unlock it automatically by supplying air to the release port or by using the manual release lever. Equipped with a magnet, it works directly with AirTAC CMSE reed and DMSE electronic sensors.
This 40mm bore generates 879N of push force and 528N of pull force at 0.7 MPa. The variable air cushion at the locker end is shorter at 20mm compared to 27mm on the free end, ensuring precise end-of-stroke deceleration. The carbon steel rod and M12x1.25 thread provide reliable side-load capability for standard industrial tasks.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160S |
|---|---|
| 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 SAILF40X160S Is Used
Vertical Lift Hold
Secures a raised vertical load at the extended stroke end, preventing a drop when air pressure is lost during a power failure.
Extended Clamp Hold
Maintains outward clamping pressure on a part at the end of the stroke without consuming continuous compressed air.
Gate Safety Hold
Keeps a safety gate or guard locked in the open extended position until a controlled air signal releases the pin.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X160S the Right Lock Cylinder?
Choose this SAILF model when your application specifically requires the load to be held at the extended rod-out position. If you need to hold the load at the retracted position, select the SAILB variant instead. For applications requiring mid-stroke locking at an arbitrary position, the BSAI clamp-lock cylinder is the correct choice. Stepping up to a 50mm bore provides 1374N of push force at 0.7 MPa if you need greater thrust.
Remember that the SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, 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 staying extended, add an independent safety measure. This configuration includes a 40mm bore, 160mm stroke, front locker position, PT port threads, and an -S magnet for position sensing.
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 SAILF40X160S FAQ
At 0.7 MPa, this 40mm bore cylinder provides 879N of push force and 528N of pull force. The maximum operating pressure is 1.0 MPa.
The lock is spring-applied and air-released, holding the rod only at the extended stroke end. It engages statically after the rod stops. You can unlock it via automatic air release or the manual lever, but avoid fast-exhaust valves to prevent back-pressure from releasing the lock.
Related AirTAC Lock & Standard Cylinders
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