Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500 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 SAILF63X500
The AirTAC SAILF63X500 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages automatically when the piston reaches the extended stroke end, securely holding the load without requiring continuous live air pressure. With a 63mm bore, it generates 1559N of push force and 1402N of pull force at 0.5 MPa, paired with a carbon steel rod and PT threaded ports.
This model features a variable air cushion at both ends, though the cushion length at the locker end is notably shorter at 21mm compared to 30mm on the free end. To release the lock, you can supply air to the release port for automatic operation or use the manual release lever. Avoid using fast-exhaust valves, as back-pressure on the locker side can inadvertently lift the lock.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500 |
|---|---|
| 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 SAILF63X500 Is Used
Vertical Lift Holding
Secures elevated loads at the full extension stroke end, preventing crashes if air pressure drops unexpectedly during vertical lifting operations.
Safety Gate Lock
Keeps heavy safety gates firmly locked in the open position without consuming air, releasing only when the control system commands it.
Clamp and Hold
Maintains outward clamping pressure on a part at the extended end, holding the workpiece securely during machining or processing.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X500 the Right Lock Cylinder?
Choose this 63mm bore cylinder when an application requires 1559N of thrust at 0.5 MPa and positive holding at the rod-out position; step down to a 50mm bore (982N push) for lighter loads or up to an 80mm bore (2513N push) for heavier demands. Select the SAILF configuration specifically when the load must be secured at the extended stroke end, whereas a SAILB variant holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than the terminal end, the BSAI clamp-lock cylinder is the correct alternative.
Because this model features a 500mm stroke, mounting alignment is critical to prevent excessive side loading on the carbon steel rod and seals—ensure adequate guide support. Remember that the SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for moving rods. For safety-critical lifting applications, always add an independent mechanical safety measure, and use an independent-exhaust solenoid valve to prevent back-pressure from releasing the lock.
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 SAILF63X500 FAQ
At 0.5 MPa operating pressure, the 63mm bore provides 1559N of push force and 1402N of pull force. At 0.7 MPa, the push force increases to 2182N.
The lock is spring-applied and air-released, located in the front cover to hold the rod only at the extended stroke end. It engages statically after the cylinder stops and can be released automatically via air pressure or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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