Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S 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 SAILF80X175S
The AirTAC SAILF80X175-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. It delivers 2513N of push force at 0.5 MPa and safely holds the rod at the fully extended stroke end. The spring-applied, air-released lock engages automatically when the piston reaches the front terminal, securing the load without requiring continuous live pressure. You can unlock it by supplying air to the release port or by using the manual override lever.
This model includes a -S magnet for position sensing with CMSE reed and DMSE electronic switches. Because the lock occupies the front end, the variable air cushion there is shorter at 22.5mm compared to the 36mm cushion on the free back end. The standard carbon steel rod measures 25mm with an M20x1.5 thread, and the fluid port is 3/8 PT.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S |
|---|---|
| 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 SAILF80X175S Is Used
Extended Lift Holding
Maintains a raised platform securely at the extended stroke end during a power loss, preventing sudden collapses in vertical lifting assemblies.
Outfeed Clamp Station
Holds a workpiece firmly in the extended position without consuming continuous air pressure, ensuring stable machining or inspection.
Gate and Barrier Control
Keeps heavy safety gates locked in the open, extended position until an intentional air release signal is sent to the front cover port.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S the Right Lock Cylinder?
Choose this SAILF80X175-S when your application requires a positive hold at the extended stroke end on power loss. If you need to secure the load at the retracted position, use the SAILB80X175-S variant instead. For applications demanding mid-stroke clamping at any arbitrary position, select the BSAI clamp-lock cylinder, as this SAIL lock only engages at the stroke terminal. The lock is a static holding device, not a dynamic brake for a moving rod.
When specifying replacement parts, verify the 80mm bore, 175mm stroke, front locker position, 3/8 PT port, and the -S magnet option. A critical valve-selection red-line applies: never use a fast-exhaust valve with this lock cylinder. Use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For safety-critical suspended loads, always add an independent mechanical 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 SAILF80X175S FAQ
At 0.5 MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It operates at speeds between 30 and 800 mm/s.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold, not a dynamic brake, and is released automatically via air pressure or manually via a lever.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X175S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.