Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X175S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X175S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 175mm 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
- Stroke175 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 SAILF160X175S
The AirTAC SAILF160X175-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock housed in the front cover. Because it is a front-locker (SAILF), the spring-applied, air-released mechanism engages precisely when the piston reaches the extended stroke end, securely holding the rod-out position. In the 160mm bore class, this actuator generates a substantial 10053N pull force at 0.5MPa, making it well-suited for heavy-duty positioning tasks.
This model includes a magnetic piston (-S) for precise position sensing using AirTAC CMSE reed switches or DMSE solid-state electronic sensors. The lock itself is a static holding device that clamps the rod only after the cylinder has stopped moving; it is not a dynamic brake. To accommodate the lock hardware, the variable air cushion at the front locker end is 28mm, noticeably shorter than the 50mm cushion stroke on the rear free end.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X175S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X175S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 175 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 SAILF160X175S Is Used
Overhead Lift Holding
Secures elevated loads in the extended position automatically upon loss of air pressure, preventing sudden drops on vertical lifting jigs.
Heavy Fixture Clamping
Maintains constant outward clamping force on large machining fixtures during power loss, keeping heavy workpieces fixed without relying on live air pressure.
Safety Gate Locking
Locks heavy industrial safety gates in the open, extended position until the pneumatic release port is specifically energized to unlock the mechanism.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X175S the Right Lock Cylinder?
When sizing this actuator, stepping down to a 125mm bore yields 5734N of pull force at 0.5MPa, which may suffice for lighter payloads, while moving up to a 200mm bore increases the pull force to 15080N for heavier mechanisms. Choose this SAILF configuration when the load must be secured in the extended rod-out position; select a SAILB variant instead if the application requires holding at the retracted stroke end. If the workflow demands clamping at an arbitrary mid-stroke point rather than a stroke terminal, the AirTAC BSAI clamp-lock cylinder is the correct alternative.
For safe operation, do not use a fast-exhaust valve with this lock cylinder; always install an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. The standard carbon steel rod provides robust side-load resistance, but for this 175mm stroke, ensure external guide rails are used to prevent rod deflection. Replacement parts must match the 160mm bore, 175mm stroke, front locker position, 3/4 PT port threads, and the -S magnet specification.
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 SAILF160X175S FAQ
The 160mm bore generates a push force of 10053N and a pull force of 9425N at 0.5MPa. At the maximum operating pressure of 1.0MPa, the push force reaches 2050kgf.
The lock is spring-applied and air-released, engaging statically only when the piston reaches the extended stroke end in the front cover. It unlocks automatically via pneumatic air supply to the release port or manually via the lever, but it cannot clamp the rod at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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