Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175 is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm 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.
- BoreØ200 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 SAILF200X175
The AirTAC SAILF200X175 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock housed in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages when the piston reaches the extended stroke end, securely holding the rod-out position without relying on live air pressure. In the 200 mm bore class, it generates a substantial 15708 N of push force and 15080 N of pull force at 0.5 MPa, making it suitable for the heaviest industrial lifting tasks.
This cylinder utilizes 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 (28 mm) compared to the free end (50 mm). Remember that the cushion only decelerates the piston near stroke termination; the mechanical lock is the true static holding device. For position sensing, adding a -S magnet enables compatibility with AirTAC CMSE reed and DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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 SAILF200X175 Is Used
Heavy Vertical Lift Safety
Secures elevated platens at the extended stroke end. If air pressure drops, the spring-applied lock holds the load safely without requiring continuous live pressure.
Power-Loss Load Holding
Prevents heavy gates or lifted assemblies from falling during an unexpected pneumatic power loss. The lock engages automatically at the rod-out terminal.
Heavy Machinery Clamping
Maintains maximum clamping force on large fabricated components at the end of the stroke. The 200 mm bore delivers 15708 N of thrust at 0.5 MPa for rigid holding.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175 the Right Lock Cylinder?
Select this 200 mm bore model when an application demands immense thrust alongside fail-safe load holding at the extended position. If 15708 N push force at 0.5 MPa exceeds your requirement, stepping down to a 160 mm bore yields 10053 N, whereas this unit is necessary for loads approaching 3204 kgf at 1.0 MPa. Choose SAILF to hold the rod-out position; select SAILB if the retracted position must be secured. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice instead.
When integrating this lock cylinder, valve selection is a critical red-line: never use a fast-exhaust valve, as back-pressure on the locker side can unintentionally release the lock. Always utilize an independent-exhaust solenoid valve. The lock is a static holding device that engages after the rod stops, not a dynamic brake for moving loads. If human safety depends on the load remaining elevated, implement an independent mechanical safety measure as well. Replacement specifications must match the 200 mm bore, 175 mm stroke, front locker position, 3/4 inch PT port, and desired mounting style from the ISO 15552 compatible set.
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 SAILF200X175 FAQ
At 0.5 MPa operating pressure, the 200 mm bore generates 15708 N of push force and 15080 N of pull force. At its maximum 1.0 MPa operating pressure, it achieves a push force of 3204 kgf.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end. It provides a static hold after the cylinder stops, not a dynamic brake. You can unlock it automatically by supplying air to the release port or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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