Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175S is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 175mm 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
- Stroke175 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 SAILF63X175S
The AirTAC SAILF63X175-S is a double-acting ISO 15552 profile cylinder equipped with a built-in mechanical lock in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages when the piston reaches the extended stroke end, securely holding the rod-out position without requiring live air pressure. It delivers 1559N of push force and 1402N of pull force at 0.5MPa, utilizing a 3/8 PT port and a 20mm carbon steel rod.
This unit includes the -S magnet option for seamless position feedback using AirTAC CMSE reed and DMSE solid-state sensors. A key mechanical detail is that the variable air cushion at the locker end is 21mm, slightly shorter than the 30mm cushion on the free end, ensuring compact deceleration without interfering with the lock mechanism. The lock is a static holding device, not a dynamic brake, and provides both automatic air-release and manual lever unlocking.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAILF63X175S Is Used
Extended Lift Holding
Secures vertical loads in the extended rod-out position during a power loss, preventing gravity-driven collapses without relying on continuous air pressure.
Stroke-End Safety Clamp
Maintains a rigid, static hold on a workpiece or gate at the fully extended terminal, engaging only after the cylinder has come to a complete stop.
Pneumatic Stop Gate
Acts as a fail-safe barrier that stays extended and locked during outages, releasing automatically only when control air is restored to the valve.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175S the Right Lock Cylinder?
Select this 63mm bore when an application requires 1559N of thrust at 0.5MPa, or step up to the 80mm bore if you need 2513N of push force. Choose this SAILF front-lock model specifically when the load must be secured at the extended rod-out position; select a SAILB back-lock version if the retracted position needs holding. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke end, the AirTAC BSAI clamp-lock cylinder is the correct choice.
For reliable operation, avoid using fast-exhaust valves with this lock cylinder, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. Always add an independent mechanical safety measure if human safety depends on the load staying elevated. Replacement specifications: 63mm bore, 175mm stroke, front locker, 3/8 PT port, ISO 15552 mounting interface, 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 SAILF63X175S FAQ
At 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At the maximum 1.0MPa pressure, it achieves a maximum push force of 318 kgf.
The lock is spring-applied and air-released, engaging only when the piston reaches the fully extended stroke end in the front cover. It provides a static hold, not a dynamic brake, and can be unlocked automatically via air release or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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