Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100S is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm bore, 100mm 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.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- 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 SAILF50X100S
The AirTAC SAILF50X100-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the front cover, yielding 982N of push force at 0.5 MPa. Because the lock is spring-applied and air-released, dropping the release air pressure automatically drives a pin into the rod to secure the load at the extended stroke end without consuming live energy.
This unit includes a position magnet for CMSE reed and DMSE electronic sensors. The variable air cushion at the locker end is shorter (20mm) than the free end (30mm), and the carbon steel rod utilizes an M16x1.5 thread. You can disengage the mechanism pneumatically or via the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| 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 / 20 mm lock end) |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SAILF50X100S Is Used
Vertical Lift Holding
Secures elevated loads at the full rod-out position instantly upon loss of air pressure, preventing sudden drops in lifting fixtures.
Safety Gate Lock
Keeps heavy access gates firmly locked in the open extended state until the release air is actively supplied to disengage the pin.
End-of-Stroke Clamp
Maintains constant clamping force on a part at the extended terminal without continuously consuming compressed air.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100S the Right Lock Cylinder?
Choose this 50mm bore when an application requires holding a load safely at the rod-out position; if you need to secure the retracted rod-in position instead, select the SAILB variant. For clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice, as this SAIL lock only engages after the piston reaches the stroke terminal. The static holding lock is not a dynamic brake for moving rods.
Avoid using fast-exhaust valves with this cylinder, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. If human safety depends on the load remaining elevated, add an independent mechanical safety measure. Replacement specifications: 50mm bore, 100mm stroke, front locker, PT 1/4 port, -S magnet, and standard mountings like FA, FB, or 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 SAILF50X100S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The lock is spring-applied and air-released, holding the rod securely at the extended stroke end. It engages automatically when air pressure is cut and releases via air supply or a manual lever, but it cannot hold the rod at an arbitrary mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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