Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X350
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X350 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 350mm 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
- Stroke350 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 SAILF160X350
The AirTAC SAILF160X350 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. Because the lock engages when the piston reaches the extended stroke end, it securely holds the rod-out position without requiring live air pressure. In this configuration the 40mm carbon steel rod delivers a robust 18095N of push force at 0.9 MPa, making it ideal for heavy-load elevation tasks.
This model features a 3/4-inch PT tapered port and operates at speeds of 30-500 mm/s. A key design trait is that the variable air cushion at the locker end is physically shorter (28mm) than the free end cushion (50mm). The lock is released automatically by supplying air to the release port or manually via the release lever, but note that the cushion only decelerates the load; the lock is the true holding mechanism.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X350 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X350 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 350 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 SAILF160X350 Is Used
Heavy Lift Holding
Secures elevated platens at the extended stroke end during a power loss, preventing sudden drops in heavy material handling systems.
Safety Gate Lock
Maintains a locked rod-out position on large safety gates or guarding, requiring an air signal to safely release the barrier.
Clamp and Hold
Provides a rigid, zero-pressure hold at the end of the extension stroke for heavy machining or fabrication clamping fixtures.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X350 the Right Lock Cylinder?
Choose this 160mm bore when a 125mm bore falls short of the required thrust (the 125mm version provides 11045N push at 0.9 MPa) or when stepping up from a 100mm bore (7068N). Select the SAILF front-locker variant specifically when the load must be secured at the extended rod-out position; choose SAILB if the retracted position needs holding. If your application requires clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice instead of this stroke-end lock.
For this 350mm stroke, implement external guide rails to counteract side-loading and protect the seals. The lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock; use an independent-exhaust solenoid valve. Always add an independent mechanical safety measure if human safety relies on the suspended load. Replacement parts must match the 160mm bore, 350mm stroke, front lock position, 3/4-inch PT port, and standard carbon steel rod.
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 SAILF160X350 FAQ
At 0.9 MPa operating pressure, the 160mm bore generates a push force of 18095N and a pull force of 9425N. The maximum allowable operating pressure is 1.0 MPa.
The spring-applied, air-released lock engages statically at the extended stroke end in the front cover. It holds the load without live pressure and is released automatically via an air signal or manually via a lever. It does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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