Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175 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 SAILF63X175
The AirTAC SAILF63X175 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism secures the rod specifically at the extended stroke end, retaining a load safely without requiring continuous live air pressure. In the 63mm bore class, it delivers a 0.5 MPa push force of 1559N and a 0.7 MPa push force of 2182N.
Because the lock occupies the front end, the variable air cushion on that side is shortened to 21mm compared to the 30mm cushion on the free end. The standard carbon steel rod provides durable operation, and the lock releases automatically via air pressure or manually via a lever. For position sensing, adding an -S magnet allows the use of AirTAC CMSE reed or DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175 |
|---|---|
| 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 SAILF63X175 Is Used
Extended Load Holding
Secures vertical lifts in the extended position during a power loss, using the spring-applied lock to prevent gravity-induced descent.
Flow Control Gates
Holds a diverter gate open at the front stroke end without consuming continuous air, releasing automatically when flow needs to redirect.
Clamp and Hold
Maintains outward clamping pressure on a part at the extended terminal, ensuring the workpiece stays fixed without live pneumatic pressure.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X175 the Right Lock Cylinder?
Choose this 63mm bore when an application demands reliable end-of-stroke holding at 0.7 MPa push forces up to 2182N. If your load requires less force, stepping down to a 50mm bore yields 1374N; if more holding power is needed, an 80mm bore provides 3518N. Select this SAILF variant to secure the rod in the extended position; choose a SAILB model if the load must be held retracted. If the mechanism requires clamping at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct alternative.
Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Pneumatic routing is critical: never use a fast-exhaust valve with this cylinder, as back-pressure on the locker side can unintentionally release the lock. Always use an independent-exhaust solenoid valve. If human safety depends on the load remaining extended, implement an independent mechanical safety measure as a backup. This 175mm stroke model uses a 3/8 PT port and supports mountings including FA, FB, LB, and TC.
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 SAILF63X175 FAQ
At 0.5 MPa, the push force is 1559N and the pull force is 1402N. At 0.7 MPa, the push force is 2182N. The maximum push force is 2805N at 0.9 MPa.
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 piston stops. It unlocks automatically via air pressure to the release port or manually via a lever, but it cannot clamp at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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