Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 80mm 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
- Stroke80 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 SAILF200X80S
The AirTAC SAILF200X80-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock 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. In this bore size, the cylinder generates 15708N of push force and 15080N of pull force at 0.5 MPa, making it suitable for heavy-load positioning.
The lock is spring-applied, meaning it fails safe by clamping the rod when release air is cut, and requires air supplied to the release port for automatic unlocking, though a manual release lever is also provided. To accommodate the locking hardware, the variable air cushion at the front locker end is 28mm, notably shorter than the 50mm cushion at the back end. This unit includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, and uses a carbon steel rod with PT threaded ports.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 80 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 SAILF200X80S Is Used
Heavy Lift Holding
Secures elevated platens or massive lifting arms in the extended position, preventing crashes if air pressure drops unexpectedly.
Safety Gate Lock
Holds heavy safety gates or machine doors open at the full extended stroke end without consuming continuous live air pressure.
Press Load Retention
Maintains applied pressing force at the extended end of the stroke, keeping the load locked firmly in place during power loss.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80S the Right Lock Cylinder?
Choose this 200mm bore cylinder when an application requires massive thrust, such as 21991N push at 0.7 MPa, alongside guaranteed load holding at the extended position. If the application requires holding the load at the retracted rod-in position instead, the SAILB200X80-S is the correct choice. For loads that must be clamped at an arbitrary mid-stroke point rather than a stroke end, select the BSAI clamp-lock cylinder instead.
Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Never use a fast-exhaust valve with this cylinder; always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. If human safety depends on the load staying extended, add an independent mechanical safety measure. Replacement parts must match the 200mm bore, 80mm stroke, front locker position, 3/4 PT port, and -S magnet specification.
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 SAILF200X80S FAQ
At 0.5 MPa, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At 0.7 MPa, the push force increases to 21991N.
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 automatically as a static hold after the cylinder stops; it is not a mid-stroke clamp or dynamic brake. Unlocking is done by supplying air to the release port or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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