Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160 is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke160 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM16×1.5
- 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 SAILF50X160
The AirTAC SAILF50X160 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock built into the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a lock pin into the carbon steel rod, securely holding the load 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. This 50mm bore generates 982N of push force and 825N of pull force at 0.5 MPa, making it well-suited for medium-duty vertical lifting and holding tasks.
A key design detail is that the variable air cushion at the locker end is 20mm, which is shorter than the 30mm cushion on the free end, ensuring compact deceleration near the locked terminal. The lock is a static holding device that engages only after the piston stops at the stroke end; it is not a dynamic brake for a moving rod. For position sensing, adding a -S magnet enables the use of AirTAC CMSE reed or DMSE electronic solid-state sensors in the dual-side barrel grooves.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 160 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (30 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SAILF50X160 Is Used
Extended Load Holding
Maintains a securely elevated position for heavy vertical doors or lifted platforms during sudden air pressure loss.
End-Stroke Clamping
Locks a workpiece firmly in place at the full extension point for machining or assembly operations.
Fail-Safe Safety Barrier
Acts as a static holding barrier at the extended end to prevent accidental retraction on safety gates.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160 the Right Lock Cylinder?
Choose this 50mm bore model when your application requires holding a load safely at the extended stroke end during a power or air loss. If your project demands higher thrust, stepping up to the 63mm bore yields 1559N of push force at 0.5 MPa; conversely, dropping to the 40mm bore provides 628N. Select SAILF for front-cover locking at the rod-out position, and choose SAILB if you need the load held at the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct choice instead.
When integrating this cylinder, never use a fast-exhaust valve, 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 mechanical safety measure as well. To match this replacement exactly, verify the 160mm stroke, front locker position, 1/4 PT port thread, and your required mounting style from the full ISO 15552 set (Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2).
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 SAILF50X160 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The lock is spring-applied and air-released, holding the rod securely at the extended stroke end when release air is cut. It unlocks automatically by supplying air to the release port or manually via the lever, but it only holds statically at the stroke end, not at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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