Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175S 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 SAILF200X175S
The AirTAC SAILF200X175-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock housed in the front cover. Because it is a SAILF variant, the lock engages when the piston reaches the extended stroke end, securely holding the rod-out position. In the 200mm bore class, this actuator generates a substantial 15708N of push thrust and 15080N of pull thrust at 0.5MPa, making it suitable for heavy-duty lifting. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors.
A key design feature is the variable air cushioning, which decelerates the load near the stroke terminus; however, the cushion never holds the load, as that role belongs entirely to the mechanical lock. The cushion at the locker end is physically shorter, measuring 28mm compared to the 50mm cushion on the free end. The standard carbon steel rod provides robust durability, while the PT tapered port threads ensure a reliable pneumatic seal.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175S |
|---|---|
| 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 SAILF200X175S Is Used
Heavy Load Lifting
Ideal for vertical lifts where the 15708N push force at 0.5MPa must remain safely extended even if air pressure drops.
Extended Position Holding
Secures heavy gates or platens at the rod-out stroke end without consuming live air, utilizing the spring-applied front lock.
Power-Loss Safety
Prevents sudden drops in heavy machinery during power loss, holding the load statically at the extended terminal.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X175S the Right Lock Cylinder?
Choose this 200mm bore cylinder when an application demands massive output force combined with fail-safe load holding at the extended position. If the 21991N push force at 0.7MPa is excessive, stepping down to a 160mm bore yields 14074N, but for loads up to 3204kgf at 1.0MPa, this model is the correct fit. Select SAILF to hold the rod-out state and SAILB if the retracted state must be secured. If the mechanism requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the AirTAC BSAI clamp-lock cylinder is the required alternative.
The lock is a static holding device that engages only after the cylinder stops, meaning it will not brake a moving rod. Valve selection is critical: never use a fast-exhaust valve with this unit, as back-pressure on the locker side can inadvertently release the lock—always use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, implement an additional independent safety measure. For exact replacement matching, verify the 175mm stroke, front locker position, 3/4 PT port, 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 SAILF200X175S FAQ
At 0.5MPa, the push force is 15708N and the pull force is 15080N. At 0.7MPa, the push force increases to 21991N, and the maximum push force is 28274N at 0.9MPa.
The lock is spring-applied and air-released, located in the front cover to hold the rod only at the extended stroke end. It engages statically after the piston stops and is released automatically via air supply or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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