Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X700
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X700 is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 700mm 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
- Stroke700 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 SAILF63X700
The AirTAC SAILF63X700 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock built into the front cover. Because the lock resides in the front end, it secures the rod specifically at the fully extended stroke end. This 63mm bore generates 1559N of push and 1402N of pull at 0.5 MPa, making it well-suited for heavy vertical lifting tasks.
Unlike a plain SAI cylinder, this unit retains the load without continuous air pressure. The lock engages statically after the piston stops at the extended terminal; it is not a dynamic brake for a moving rod. The front locker-end air cushion is 21mm, which is intentionally shorter than the 30mm cushion on the free back end. The standard carbon steel rod handles guide loads firmly, and adding a -S magnet enables position tracking via AirTAC CMSE reed or DMSE solid-state sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X700 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X700 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 700 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 SAILF63X700 Is Used
Extended Lift Holding
Secures vertical loads safely at the extended stroke end during a power loss, preventing sudden drops without needing continuous air pressure.
Gate Safety Lock
Holds heavy safety gates and access barriers open at the rod-out position, using the spring-applied front lock to maintain security.
Clamp and Hold Station
Drives a clamping mechanism forward and locks it statically at the extended terminal, ensuring unyielding workpiece retention.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X700 the Right Lock Cylinder?
Choose this 63mm bore when a 50mm cylinder lacks thrust, as the 50mm yields only 825N pull versus 1402N here at 0.5 MPa. Select the SAILF variant specifically when the load must be held safely at the rod-out position; for retracted holding, pick SAILB instead. If your application requires clamping at a mid-stroke point rather than the extended end, use the BSAI clamp-lock cylinder instead of this model. With a 700mm stroke, adding an external guide is highly recommended to prevent excessive side-load wear on the rod seals.
For replacement, verify the 63mm bore, 700mm stroke, front lock position, and 3/8 PT port threads. The lock is a static holding device, not a dynamic brake. Never pair this cylinder with a fast-exhaust valve; use an independent-exhaust solenoid valve to prevent back-pressure from accidentally releasing the lock. If human safety depends on the load remaining extended, always add an independent mechanical safety measure.
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 SAILF63X700 FAQ
At 0.5 MPa, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 318 kgf.
The lock is spring-applied and air-released, engaging statically only when the rod reaches the fully extended stroke end. It does not clamp at mid-stroke. You can unlock it automatically by supplying release air, or manually via the lever, but never use a fast-exhaust valve as back-pressure can release the lock.
Related AirTAC Lock & Standard Cylinders
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