Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80 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 SAILF200X80
The AirTAC SAILF200X80 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock housed in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages specifically when the piston reaches the extended stroke end. Delivering a substantial 15708N push force at 0.5MPa and equipped with a 40mm carbon steel rod, it provides robust load-holding capability for heavy machinery.
This model utilizes a 3/4 PT port and operates at speeds between 30-500mm/s. To accommodate the locking hardware, the variable air cushion at the locker end is notably shorter, measuring 28mm compared to the 50mm cushion on the free end. The lock itself is a static holding device that engages only after the cylinder has fully stopped; it is not designed to brake a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80 |
|---|---|
| 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 SAILF200X80 Is Used
Overhead Lift Safety
Secures heavy vertical lifts in the extended position, ensuring loads remain safely elevated during a sudden compressed air loss.
Press Hold
Maintains high-force clamping pressure at the rod-out end without consuming continuous air, saving energy during long holding phases.
Gate Barrier
Holds heavy industrial gates or barriers firmly open at the full stroke end, preventing gravity or vibration from forcing movement.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X80 the Right Lock Cylinder?
Choose this 200mm bore cylinder when an application demands immense thrust alongside fail-safe load holding at the rod-out position. If the 15708N push at 0.5MPa is excessive, stepping down to a 160mm bore yields 10053N of push force while maintaining the same 3/4 PT port size. Select SAILF when the load must be secured at the extended stroke end, and choose SAILB if the retracted position requires holding. For applications requiring the load to be clamped at an arbitrary mid-stroke point rather than a stroke end, the AirTAC BSAI clamp-lock cylinder is the correct alternative.
Remember that the SAIL lock holds the load without live air pressure, but only at the specific stroke terminal. Avoid using fast-exhaust valves with this cylinder, as back-pressure on the locker side can inadvertently release the lock; an independent-exhaust solenoid valve is required. If human safety depends on the load remaining elevated, always add an independent mechanical safety measure. Replacement matches require verifying the 80mm stroke, front lock position, PT port threads, and full ISO 15552 mounting interface dimensions.
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 SAILF200X80 FAQ
At 0.5MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 3204 kgf.
The lock is spring-applied and air-released, meaning it engages automatically when the rod reaches the extended stroke end to hold the load without live pressure. To unlock it, you supply air to the release port or use the manual release lever; it cannot clamp at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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