Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X900
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X900 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 900mm 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
- Stroke900 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 SAILF80X900
The AirTAC SAILF80X900 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. Because the lock engages at the extended stroke end, it secures the rod-out position to hold elevated loads safely without requiring continuous live air pressure. Delivering 2513N of push force at 0.5 MPa, this 80mm bore unit utilizes a 25mm carbon steel rod and PT tapered port threads.
This configuration features a 900mm stroke, which exceeds the 1500mm standard maximum and is therefore classified as a non-standard stroke. The variable air cushion at the locker end is 22.5mm, intentionally shorter than the 36mm cushion on the free end to accommodate the locking mechanism. For position sensing, adding an -S magnet allows the use of AirTAC CMSE reed or DMSE electronic solid-state switches in the dual sensor grooves.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X900 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X900 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAILF80X900 Is Used
Extended Lift Holding
Secures vertical lifts in the extended rod-out position during power loss, preventing gravity-driven drops without needing continuous air pressure.
Pallet Stop Gate
Acts as a robust stop gate on conveyors, locking at the extended stroke end to hold heavy pallets securely in place during transfer.
Safety Guard Positioning
Maintains a safety guard or door open at the full extended end, ensuring the barrier remains firmly locked until air is actively supplied to release.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X900 the Right Lock Cylinder?
Select this 80mm bore size when an application requires 2513N push force at 0.5 MPa, or step up to a 100mm bore for 3927N if moving heavier payloads. Choose this SAILF variant when the load must be secured at the extended rod-out position; conversely, a SAILB holds the retracted position. If your process demands clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct choice instead of this model.
The lock provides a static hold that engages after the cylinder stops, meaning it is not a dynamic brake for a moving rod. Pneumatic routing is critical: never use a fast-exhaust valve with a lock cylinder, as back-pressure on the locker side can inadvertently release the mechanism. Always employ an independent-exhaust solenoid valve. Because this unit features a long 900mm stroke, external guide rails should be used to prevent excessive side-loading on the 25mm rod. For human-safety dependent lifting applications, always add an independent mechanical safety measure alongside the lock.
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 SAILF80X900 FAQ
At 0.5 MPa operating pressure, the 80mm bore generates 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The spring-applied, air-released lock engages only at the extended stroke end in the front cover. It holds the load statically after the rod stops. You can unlock it automatically by supplying air to the release port or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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