Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X50
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X50 is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 50mm 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
- Stroke50 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 SAILF200X50
The AirTAC SAILF200X50 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock housed within the front cover. Because this is a SAILF configuration, the spring-applied, air-released lock engages precisely when the piston reaches the extended stroke end. This mechanism secures the load entirely without requiring live pressure, which is critical for heavy machinery where power loss could lead to dangerous drops. In the 200mm bore class, it delivers a substantial 15708N of push force at 0.5MPa and up to 28274N at 0.9MPa.
The locking system is designed for static holding after the cylinder comes to a complete stop, rather than functioning as a dynamic brake for a moving rod. To accommodate the lock hardware, the variable air cushion at the front locker end is 28mm, noticeably shorter than the 50mm cushion on the rear free end. The standard carbon steel rod provides robust durability, and the barrel features dual sensor grooves compatible with AirTAC CMSE reed and DMSE electronic switches if a magnet is specified for your build.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X50 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X50 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAILF200X50 Is Used
Vertical Lift Hold
Secures heavy elevated loads at the fully extended top position instantly upon air pressure loss, preventing sudden gravity-driven drops.
Press Clamp Safety
Maintains high-force clamping pressure on large fabricated parts at the extended stroke end during unexpected plant power outages.
Gate Barrier Lock
Keeps heavy industrial safety gates and barriers firmly locked in the open extended position until the release air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X50 the Right Lock Cylinder?
Choose this 200mm bore model when an application demands extreme thrust alongside guaranteed load holding at the fully extended position. If your process requires holding the load at the retracted end instead, the SAILB200X50 is the correct alternative. For operations that must arrest and hold a load at an arbitrary mid-stroke point rather than a stroke end, the BSAI clamp-lock cylinder is the required solution.
When integrating this cylinder, avoid using fast-exhaust valves; an independent-exhaust solenoid valve is mandatory because back-pressure on the locker side can inadvertently release the lock. Furthermore, if human safety depends on the load remaining extended, always add an independent secondary safety measure. Ensure your replacement matches the 200mm bore, 50mm stroke, front lock position, 3/4-inch PT port, and appropriate mounting from the ISO 15552 compatible set (Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2).
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 SAILF200X50 FAQ
At a 0.5MPa operating pressure, the 200mm bore provides 15708N of push force and 15080N of pull force. At 0.9MPa, the push force increases to 28274N.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end. It provides a static hold after the cylinder stops, and you can unlock it automatically by supplying release air or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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