Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke80 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 SAILF80X80S
The AirTAC SAILF80X80-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. This spring-applied, air-released lock engages automatically when the piston reaches the extended stroke end, securely holding a 2513N load at 0.5 MPa without requiring continuous air pressure. A 25mm carbon steel rod and PT tapered ports provide robust operation, while the included magnet enables precise position sensing with CMSE reed or DMSE electronic switches.
Because the lock occupies the front end, the variable air cushion on that side is shorter at 22.5mm compared to the 36mm cushion on the free end. The lock acts as a static holding device after the rod stops, rather than a dynamic brake for a moving load. For applications requiring the rod to be clamped at an arbitrary mid-stroke position, the BSAI clamp-lock cylinder is the correct alternative.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAILF80X80S Is Used
Vertical Lift Safety
Holds an extended vertical load securely in place during a sudden air pressure loss or emergency stop.
Flow Control Gate
Locks a diverter gate open at the extended stroke end to maintain a clear path without consuming live air.
Clamp and Hold
Extends to clamp a workpiece and maintains holding force at the stroke end even if the main air supply drops.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S the Right Lock Cylinder?
Choose this 80mm bore actuator when a system requires 2513N of push force at 0.5 MPa and must maintain an extended position during a power loss. If your application only needs 1374N, the 50mm bore offers a smaller footprint, while the 100mm bore provides 3927N for heavier lifting. Selecting the SAILF variant ensures the load is held at the rod-out terminal, whereas a SAILB model holds the retracted position. Always confirm the required holding position matches the locker cover.
When integrating this actuator, avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. If human safety relies on the load remaining extended, add an independent mechanical safety measure. Replacement or system matching requires verifying the 80mm bore, 80mm stroke, front locker position, PT port threads, and the -S magnet option for sensor compatibility.
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 SAILF80X80S FAQ
At 0.5 MPa, the push force is 2513N and the pull force is 2268N. At 0.7 MPa, the push force increases to 3518N, and it reaches 4523N at 0.9 MPa.
The lock is spring-applied and air-released, engaging statically when the piston reaches the extended stroke end. It unlocks automatically by supplying air to the release port or manually via the release lever. It does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X80S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.