Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X200S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X200S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 200mm 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.
- BoreØ80 mm
- Stroke200 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM20×1.5
- 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 SAILF80X200S
The AirTAC SAILF80X200-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, it automatically engages to hold the rod securely at the fully extended stroke end whenever release air is cut, maintaining the load safely without live pressure. At 0.7 MPa, this 80 mm bore generates 3518 N of push force, and the integrated magnet works seamlessly with CMSE reed and DMSE solid-state sensors.
A key design detail is that the variable air cushion at the locker end is 22.5 mm, intentionally shorter than the 36 mm cushion on the free end to accommodate the locking mechanism. The standard carbon steel rod is 25 mm thick, providing robust resistance to side loads, and the 3/8 PT tapered ports ensure reliable pneumatic connections.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X200S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X200S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 200 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable (36 mm free end / 22.5 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SAILF80X200S Is Used
Extended Load Holding
Maintains vertical loads securely in the extended position during a power loss or air pressure drop, preventing sudden collapses on lifting platforms.
End-of-Stroke Clamping
Holds a workpiece firmly at the fully extended stroke end without consuming continuous compressed air, ideal for energy-efficient machining fixtures.
Gate and Door Safety
Keeps heavy safety gates and industrial doors locked in the open, extended position until a deliberate air release signal is sent.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X200S the Right Lock Cylinder?
Choose this 80 mm bore when you need higher thrust than the 63 mm class (which provides 2182 N at 0.7 MPa) but want to avoid the larger footprint of the 100 mm option. Select the SAILF configuration specifically when your application requires the load to be held at the rod-out extended position, whereas a SAILB variant would hold the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct alternative.
Remember that this lock is a static holding device, not a dynamic brake, meaning it engages only after the cylinder has stopped moving. For safe operation, avoid using a fast-exhaust valve, as back-pressure on the locker side can unintentionally release the lock; instead, use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, always add an independent mechanical safety measure. To replace this unit, match the 80 mm bore, 200 mm stroke, front locker position, 3/8 PT ports, 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 SAILF80X200S FAQ
The 80 mm bore generates a push force of 3518 N at 0.7 MPa and 4523 N at 0.9 MPa. The pull force is 2268 N at 0.5 MPa.
The lock is spring-applied and air-released, holding the rod at the extended stroke end when air is cut. It is a static hold, not a mid-stroke clamp, and can be unlocked automatically via air or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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