Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X225
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X225 is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 225mm 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
- Stroke225 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 SAILF63X225
The AirTAC SAILF63X225 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, securely holding a load of up to 2182 Newtons at 0.5 MPa without requiring continuous live air pressure. A standard carbon steel piston rod provides robust resistance to bending under dynamic loads.
The lock releases automatically by supplying air to the dedicated release port, or manually via an override lever. Because the locker occupies one end, the variable air cushion on that front side is shorter at 21 mm compared to the 30 mm cushion on the free end. The barrel extrusion includes sensor grooves on both sides for direct mounting of CMSE or DMSE switches, though a magnet is not included in this configuration.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X225 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X225 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 225 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 SAILF63X225 Is Used
Extended Load Holding
Maintains a securely elevated load at the full rod-out position during a power loss, preventing gravity-driven collapses.
Flow Control Diverter
Keeps a routing gate firmly locked in the open extended state to ensure consistent product flow without consuming air.
End-of-Stroke Clamping
Provides a stable, static hold on a workpiece at the forward stroke end for secondary machining operations.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X225 the Right Lock Cylinder?
Choose this 63 mm bore cylinder when an application requires safely suspending an extended load, delivering 1559 Newtons of push force at 0.5 MPa. If your system needs less force, stepping down to a 50 mm bore yields 982 Newtons; stepping up to an 80 mm bore provides 2513 Newtons. Select this SAILF variant specifically when the load must be held at the rod-out position, whereas a SAILB model holds the retracted rod-in position.
If the mechanism requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct choice. Always use an independent-exhaust solenoid valve for this cylinder; utilizing a fast-exhaust valve can generate back-pressure on the locker side, accidentally releasing the lock. For any safety-critical lifting application, implement an independent secondary safety measure. Replacement specifications must match the 63 mm bore, 225 mm stroke, 3/8 PT port, and front locker position.
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 SAILF63X225 FAQ
At a standard operating pressure of 0.5 MPa, this 63 mm bore cylinder generates 1559 Newtons of push force and 1402 Newtons of pull force. At 0.7 MPa, the push force increases to 2182 Newtons.
The lock is spring-applied and air-released, engaging statically only when the piston reaches the extended stroke end in the front cover. It unlocks automatically via air pressure to the release port or manually via a lever, but it cannot clamp the rod at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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