Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X450S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X450S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 450mm 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
- Stroke450 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 SAILF80X450S
The AirTAC SAILF80X450-S is a double-acting ISO 15552 profile cylinder equipped with 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 extended stroke-end whenever the release air is cut, maintaining the load without live pressure. Featuring an 80mm bore, it generates 2513N of push thrust at 0.5MPa and 4523N at 0.9MPa.
This unit includes the -S magnet for seamless integration with CMSE reed and DMSE electronic sensors. The variable air cushion at the locker end is specifically shorter at 22.5mm compared to the 36mm cushion on the free end, ensuring proper deceleration without interfering with the locking mechanism. You can release the lock automatically by supplying air to the port or by using the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X450S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X450S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAILF80X450S Is Used
Vertical Lift Safety
Holds an extended vertical load securely in place during a power loss or air pressure drop, preventing sudden drops on lifting gates.
Clamp and Hold
Maintains solid outward clamping pressure on a workpiece at the extended stroke end without continuously consuming compressed air.
Pallet Positioning
Locks an extended pusher arm in place at the end of the stroke to stabilize pallets or heavy materials during transfer.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X450S the Right Lock Cylinder?
Choose this 80mm bore model when an application requires holding a load at the extended stroke end on power loss; if you need to hold the rod in the retracted position, select the SAILB variant instead. If your application requires locking at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct choice.
The lock provides a static hold that engages only after the cylinder has stopped, meaning it cannot function as a dynamic brake for a moving rod. Avoid using fast-exhaust valves with this cylinder, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. For safety-critical loads that must remain suspended, always add an independent safety measure. With a 450mm stroke, use appropriate guide rails to prevent excessive side-loading on the rod. Replacement matches require an 80mm bore, 450mm stroke, front lock position, PT port threads, and the -S magnet.
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 SAILF80X450S FAQ
At 0.5MPa, the 80mm bore provides 2513N of push thrust and 2268N of pull thrust. At 0.9MPa, the push thrust increases to 4523N.
The spring-applied, air-released lock engages automatically when the rod reaches the extended stroke end, holding the load without live pressure. It is a static hold, not a dynamic brake. Unlock by supplying release air or using the manual lever.
Related AirTAC Lock & Standard Cylinders
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