Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250S
The AirTAC SAILF Front Locking Pneumatic Cylinder SAILF160X250S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 250mm 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
- Stroke250 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 SAILF160X250S
The AirTAC SAILF160X250-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, it automatically engages to hold the rod securely at the extended stroke end whenever release air is cut off. This 160mm bore generates a substantial 14074N of push force at 0.7 MPa, making it highly capable for heavy-duty holding tasks. A carbon steel piston rod provides durable service in demanding industrial settings.
This SAILF variant features a PT tapered port thread and includes a magnet for seamless integration with AirTAC CMSE reed and DMSE electronic sensors. The variable air cushion at the locker end is specifically machined to 28mm, which is shorter than the 50mm cushion found on the free end, ensuring precise deceleration before the lock engages. Remember that this static lock holds the load only after the cylinder stops; it is not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 250 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 SAILF160X250S Is Used
Vertical Load Holding
Secures heavy elevated loads at the extended stroke end automatically on power loss, preventing sudden drops in lifting applications.
Machine Safety Barrier
Keeps safety gates and heavy machine guards locked in the open, extended position until the pneumatic release port is actively pressurized.
Heavy Press Retention
Maintains high-force clamping pressure on large industrial press workpieces at the stroke terminal without continuously consuming compressed air.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X250S the Right Lock Cylinder?
Choose this 160mm bore if your application requires holding heavy extended loads up to 14074N at 0.7 MPa, or step down to a 125mm bore if 8590N is sufficient. Select the SAILF configuration when the load must be retained at the rod-out position, whereas a SAILB version holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, the AirTAC BSAI clamp-lock cylinder is the correct choice.
For safe operation, never use a fast-exhaust valve with this lock cylinder; instead, install an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. While the lock holds the load without live pressure, always add an independent safety measure if human safety depends on the load staying elevated. Replacement requires matching the 160mm bore, 250mm stroke, front locker position, PT 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 SAILF160X250S FAQ
At 0.7 MPa operating pressure, this 160mm bore cylinder provides 14074N of push force and 9425N of pull force. It can achieve a maximum push force of 18095N at 0.9 MPa.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end when air is removed. To unlock, supply air to the release port for automatic release or use the manual release lever. It only holds at this stroke end and does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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