Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900 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 SAILF63X900
The AirTAC SAILF63X900 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages when the piston reaches the extended stroke end, securing the load without relying on live air pressure. With a 63mm bore, it delivers a push force of 2182N at 0.7MPa and utilizes a carbon steel piston rod.
Because the lock occupies the front cover, the variable air cushion on that locker end is shorter at 21mm compared to the 30mm cushion on the free end. To maintain safe operation, avoid fast-exhaust valves; back-pressure on the locker side can unintentionally release the lock, so an independent-exhaust solenoid valve is required.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900 |
|---|---|
| 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 SAILF63X900 Is Used
Extended Lift Holding
Secures vertical lifts in the rod-out position, preventing drops if air pressure is lost during elevation tasks.
Actuator Stop
Locks the extended rod to act as a hard stop for conveyor flows, maintaining position without continuous air consumption.
Safety Gate Lock
Keeps safety gates and guards open at full extension, requiring an air signal to safely release and close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X900 the Right Lock Cylinder?
Choose this 63mm bore when an application requires 2182N of push force at 0.7MPa at the extended position. If less force is needed, a 50mm bore provides 1374N; if more is required, step up to an 80mm bore for 3518N. Select this SAILF model specifically when the load must be held at the rod-out position. If you need to secure the load mid-stroke rather than at the end, the BSAI clamp-lock cylinder is the correct choice.
For this 900mm stroke, external guide rails are strongly recommended to prevent excessive side-loading on the rod. This non-standard stroke retains the 3/8 PT port and standard mounting dimensions. Replacement requires matching the 63mm bore, 900mm stroke, front lock position, and port size.
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 SAILF63X900 FAQ
At 0.7 MPa operating pressure, the 63mm bore provides a push force of 2182N and a pull force of 1402N. The maximum push force is 2805N at 0.9 MPa.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end. It provides a static hold, not a dynamic brake, and is released automatically via air pressure or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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