Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175 is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM20×1.5
- 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 SAILF80X175
The AirTAC SAILF80X175 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock integrated into the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a lock pin into the 25mm carbon steel rod, securely holding 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.
This 80mm bore generates 2513N of thrust at 0.5MPa, making it suitable for heavy load control. The variable air cushion at the locker end is shorter at 22.5mm compared to the free end at 36mm, a specific design accommodation for the locking hardware. The barrel is extruded aluminum with sensor grooves on both sides, ready for AirTAC CMSE reed and DMSE electronic sensors if a magnet is added later.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 175 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 (36 mm free end / 22.5 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SAILF80X175 Is Used
Extended Load Holding
Maintains vertical loads securely in the extended position during sudden air pressure loss, preventing drops until release air is restored.
Clamp and Hold at Stroke End
Secures a workpiece at the extended terminal point without consuming continuous air, saving energy while guaranteeing the clamp stays shut.
Safety Gate Interlock
Keeps safety gates and heavy guards locked open at the extended stroke end, requiring an active air signal to safely close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175 the Right Lock Cylinder?
Choose this front-lock configuration when your machinery must hold a load safely in the extended position during a power loss. If you need to hold the retracted rod instead, select the SAILB80X175 back-locker variant. For applications requiring the load to be clamped at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice. Always confirm the exact lock holding force from the datasheet for your specific load.
Valve selection is critical for safe operation; never use a fast-exhaust valve with this cylinder, as back-pressure on the locker side can unintentionally release the lock. Use an independent-exhaust solenoid valve instead. The lock is a static holding device that engages after the rod stops, not a dynamic brake. If human safety depends on the load staying extended, add an independent safety measure. This model features a 3/8 PT port, 175mm stroke, and standard ISO 15552 mounting options like TC and FA.
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 SAILF80X175 FAQ
At 0.5MPa, the SAILF80X175 provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The front lock is spring-applied and air-released, meaning it engages automatically to hold the rod at the extended stroke end when air is cut off. It can be unlocked by supplying release air or using the manual lever. It is a static hold only, not a mid-stroke clamp.
Related AirTAC Lock & Standard Cylinders
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