Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160S 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 SAILF50X160S
The AirTAC SAILF50X160-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. A spring-applied, air-released lock engages when the piston reaches the extended stroke end, securely holding the load without requiring continuous live pressure. You can release the lock automatically via air supply or by using the manual release lever. Delivering 982N of push force at 0.5 MPa, it features a carbon steel rod and a magnetic piston for position sensing.
This model includes a variable air cushion at both ends, but the locker-end cushion is notably shorter at 20 mm compared to the 30 mm on the free end. For sensor integration, the -S magnet works seamlessly with AirTAC CMSE reed switches and DMSE solid-state electronic sensors. Remember the lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160S |
|---|---|
| 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 SAILF50X160S Is Used
Extended Lift Hold
Maintains vertical loads safely in the extended position during power loss, utilizing the front cover lock to prevent gravity-driven drops.
Clamp and Secure
Locks the rod out at the stroke end to hold workpieces firmly in place without consuming continuous air pressure.
Gate and Guard Hold
Keeps heavy safety gates and machine guards open and secured at the full extended position until actively released.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X160S the Right Lock Cylinder?
Choose this 50 mm bore when your application requires 982N push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628N. Select the SAILF configuration specifically when you need the load held securely at the extended rod-out position. If your application requires locking at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice instead.
Because the lock engages statically at the stroke terminal, avoid using fast-exhaust valves; an independent-exhaust solenoid valve is required because back-pressure on the locker side can unintentionally release the lock. For safety-critical loads that must stay up during a power loss, add an independent mechanical safety measure. Replacement matches require a 50 mm bore, 160 mm stroke, front locker position, PT tapered 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 SAILF50X160S FAQ
The 50 mm bore generates 982N push force and 825N pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 1374N.
The lock is spring-applied and air-released, engaging statically only when the rod reaches the extended stroke end. It is unlocked automatically via air supply or manually via a lever, but it is not a mid-stroke clamp or a dynamic brake.
Related AirTAC Lock & Standard Cylinders
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