Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X75S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X75S is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 75mm 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
- Stroke75 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 SAILF63X75S
The AirTAC SAILF63X75-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a lock pin into the rod to securely hold the load at the extended stroke end without requiring live pressure. You can unlock it automatically by supplying air to the release port or by using the manual release lever. Equipped with a magnet, this model supports AirTAC CMSE reed and DMSE electronic solid-state sensors for precise position verification.
This 63mm bore generates 2182N of push force at 0.7MPa, utilizing a carbon steel rod for robust side-load capability. A key mechanical detail is that the variable air cushion at the locker end is shorter at 21mm compared to the 30mm cushion on the free end, ensuring compact deceleration without interfering with the locking mechanism. The fluid must be filtered to 40 um, and the cylinder operates smoothly at speeds between 30-800 mm/s.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X75S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X75S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAILF63X75S Is Used
Extended Load Holding
Maintains vertical loads securely in the extended position during power loss or air pressure drops.
Stroke-End Clamping
Secures a workpiece or gate at the full extended stroke end without consuming continuous air pressure.
Lift Safety Stop
Prevents accidental falls on pneumatic lifts by mechanically locking the rod once the extended terminal is reached.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X75S the Right Lock Cylinder?
Select this 63mm bore when an application requires 2182N of push force at 0.7MPa; stepping down to a 50mm bore yields 1374N, while the larger 80mm bore provides 3518N. Choose this SAILF configuration specifically when the load must be held at the extended rod-out stroke end, whereas a SAILB variant holds the retracted rod-in position. If your machine requires locking at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct alternative.
For replacements, verify the 75mm stroke, front locker position, 3/8 PT tapered port thread, and the -S magnet option. Remember that this lock is a static holding device that engages after the piston stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; instead, use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, always add an independent 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 SAILF63X75S FAQ
The 63mm bore provides a push force of 1559N at 0.5MPa, 2182N at 0.7MPa, and 2805N at 0.9MPa. The pull force at 0.7MPa is 1402N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It holds statically after the rod stops and can be released automatically via air or manually via a lever; it does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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