Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600S is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm bore, 600mm 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.
- BoreØ50 mm
- Stroke600 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM16×1.5
- 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 SAILF50X600S
The AirTAC SAILF50X600-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages automatically to hold the rod securely at the extended stroke end whenever the release air is cut, maintaining the load position without requiring live pressure. It includes a piston magnet for switch sensing and utilizes a standard carbon steel rod.
Delivering 982N of push force at 0.5 MPa, this bore 50 unit operates at speeds of 30-800 mm/s. The variable air cushion at the locker end is specifically designed shorter (20mm) than the free end cushion (30mm) to accommodate the locking hardware. For position feedback, the integrated magnet is fully compatible with AirTAC CMSE reed and DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 600 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (30 mm free end / 20 mm lock end) |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SAILF50X600S Is Used
Extended Load Holding
Maintains a vertically lifted load securely at the extended stroke end during a power loss, preventing sudden drops without needing continuous air pressure.
Flow Control Gate
Holds a diverter or flow gate open at the rod-out position reliably, keeping the passage clear until an intentional air signal unlocks the mechanism.
Clamp and Hold
Extends to clamp a workpiece at the end of stroke and mechanically locks the position, ensuring the part remains firmly held even if shop air fluctuates.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600S the Right Lock Cylinder?
Choose this front-lock model when your application requires a safety hold specifically at the rod-out position. If your process requires clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice instead. The SAILF lock is a static holding device that engages after the cylinder stops; it is not a dynamic brake for a moving rod. Because this is a 600mm stroke, ensure external guide rails are used to prevent excessive side-loading on the rod.
When specifying the pneumatic circuit, avoid fast-exhaust valves and use an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the lock. If human safety depends on the load remaining extended, always add an independent mechanical safety measure. Replacement specifications must match bore 50, 600mm stroke, front locker position, PT port threads, 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 SAILF50X600S FAQ
At 0.5 MPa operating pressure, this bore 50 cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf of push force.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. To unlock, you supply air to the release port for automatic operation or use the manual release lever.
Related AirTAC Lock & Standard Cylinders
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