Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500S is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 500mm 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.
- BoreØ63 mm
- Stroke500 mm
- Port sizeG3/8
- 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 SAILF63X500S
The AirTAC SAILF63X500-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because it is a front-locker (SAILF), the spring-applied, air-released mechanism engages when the piston reaches the extended stroke end, securely holding the rod out without relying on live pressure. In this 63mm bore class, it delivers a push force of 2182N at 0.7MPa, making it well-suited for heavy load manipulation. The standard carbon steel rod provides robust durability, and the -S magnet enables precise position detection with CMSE reed or DMSE electronic sensors.
A critical mechanical detail is that the variable air cushion at the locker end is shorter (21mm) compared to the free end (30mm). This lock is strictly a static holding device that engages after the cylinder stops; it is not a dynamic brake for a moving rod. If your application requires clamping at an arbitrary mid-stroke position rather than the extended end, you must use a BSAI clamp-lock cylinder instead.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 500 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| 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 / 21 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SAILF63X500S Is Used
Extended Load Holding
Maintains the rod in the extended position on power loss, keeping heavy lifting platforms safely elevated without continuous air supply.
Power-Failure Safety
Secures an extended pusher at the end of stroke during an air pressure drop, preventing materials from sliding backward on an incline.
Out-Stroke Clamp
Holds a workpiece firmly in the extended position after the cylinder stops, ensuring components remain clamped without live pressure.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500S the Right Lock Cylinder?
Choose this 63mm bore when you need the 2182N push force at 0.7MPa; if your load requires less force, the 50mm bore offers 1374N, while stepping up to the 80mm bore provides 3518N. Select the SAILF configuration specifically when the load must be safely held in the extended rod-out position. Since this model has a 500mm stroke, which meets the threshold for long strokes, incorporating an external guide mechanism is highly recommended to prevent excessive side-load wear on the rod seals.
For safe operation, never use a fast-exhaust valve with this lock cylinder; an independent-exhaust solenoid valve is required because back-pressure on the locker side can unintentionally release the lock. To unlock, supply air to the release port or use the manual release lever. If human safety depends on the load remaining extended, add an independent safety measure. For replacement, verify the 500mm stroke, front locker position, 3/8 PT port, and -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 SAILF63X500S FAQ
At 0.7 MPa operating pressure, the 63mm bore provides a push force of 2182N and a pull force of 1402N. The maximum operating pressure is 1.0 MPa.
The lock is spring-applied and air-released. It engages statically when the piston reaches the extended stroke end, holding the rod out without live air. To unlock automatically, supply air to the release port, or use the manual release lever.
Related AirTAC Lock & Standard Cylinders
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