Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900S is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke900 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 SAILF63X900S
The AirTAC SAILF63X900-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This lock engages when the piston reaches the extended stroke end, securely holding the rod-out position without requiring continuous live air pressure. Equipped with a magnetic piston, it operates seamlessly with AirTAC CMSE reed and DMSE electronic sensors for precise end-position detection.
Delivering 1559N of push force at 0.5MPa, this carbon-rod actuator features a 3/8 PT port and operates at speeds of 30-800mm/s. The variable air cushion at the locker end is specifically shortened to 21mm compared to 30mm on the free end, ensuring deceleration does not interfere with the locking mechanism. Remember that the cushion only decelerates the load; the mechanical lock is the true holding device.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAILF63X900S Is Used
Extended Lift Holding
Maintains a vertically raised load at the extended top position securely during a power loss, preventing sudden drops without needing continuous air supply.
End-of-Stroke Stop
Locks a conveyor diverter or transfer arm in the extended outward position, ensuring the payload remains firmly positioned until the release air is supplied.
Safety Gate Hold
Keeps a heavy machine safety gate open at its full extension, relying on the mechanical lock rather than live pressure to protect operators.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900S the Right Lock Cylinder?
Choose this 63mm bore when an application requires 1559N of thrust at 0.5MPa, stepping up from a 50mm bore (982N) or down from an 80mm bore (2513N). Select the SAILF configuration when the load must be held at the extended rod-out position, whereas SAILB holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct choice.
This 900mm stroke requires external guide support to prevent excessive side-loading on the rod seals. The lock is a static holding device that engages after the cylinder stops, not a dynamic brake for moving rods. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; always use an independent-exhaust solenoid valve. For human-safety critical lifts, add an independent mechanical safety measure. Replacement specs: 63mm bore, 900mm stroke, front lock, PT ports, 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 SAILF63X900S FAQ
At 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold after the rod stops, not a mid-stroke clamp or dynamic brake. To unlock, supply air to the release port or use the manual release lever.
Related AirTAC Lock & Standard Cylinders
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