Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 125mm 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
- Stroke125 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 SAILF160X125
The AirTAC SAILF160X125 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This lock engages when the piston reaches the extended stroke end, securely holding the rod-out position without requiring continuous live air pressure. In the 160mm bore class, it generates a substantial 14074N of push force at 0.7MPa, making it suitable for heavy-duty holding tasks.
The unit features a carbon steel rod and PT tapered port threads. A key design detail is that the variable air cushion at the locker end is shorter (28mm) compared to the free end (50mm) to accommodate the locking mechanism. The lock releases automatically via air supply or manually via a lever, but avoid fast-exhaust valves as back-pressure can unintentionally release the lock.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 125 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 SAILF160X125 Is Used
Heavy Press Hold
Maintains high-tonnage clamping pressure on large fabricated parts at the extended stroke end during secondary machining operations.
Vertical Lift Safety
Secures elevated heavy platforms or lifting forks in the rod-out position, preventing descent upon sudden compressed air loss.
Pallet Stop Gate
Holds a loaded pallet gate firmly open at the end of the stroke to allow safe forklift entry without relying on continuous air pressure.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X125 the Right Lock Cylinder?
Choose this 160mm bore when an application demands high force retention at the extended position; stepping down to a 125mm bore yields 8590N push at 0.7MPa, while this size offers 14074N. Select SAILF for rod-out holding, or SAILB if the load must be held retracted. If your application requires clamping at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct choice instead.
This static lock engages only after the cylinder stops and is not a dynamic brake. You must use an independent-exhaust solenoid valve, as shared exhaust back-pressure can lift the lock. For human-safety critical loads, add an independent safety measure. Replacement specifications require 160mm bore, 125mm stroke, front locker, 3/4 inch PT ports, and no sensor magnet.
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 SAILF160X125 FAQ
At 0.7 MPa operating pressure, the 160mm bore provides 14074N of push force and 9425N of pull force. The maximum push force is 18095N at 0.9 MPa.
The lock is spring-applied and air-released, engaging only when the rod reaches the fully extended stroke end. It provides a static hold, not a dynamic brake. It unlocks automatically via air supply to the release port or manually via a lever, but requires an independent-exhaust valve to prevent back-pressure from accidentally releasing the lock.
Related AirTAC Lock & Standard Cylinders
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