Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X100S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X100S is a genuine double-acting ISO 15552 profile cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM12×1.25
- 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 SAILF40X100S
The AirTAC SAILF40X100-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, it automatically secures the rod at the extended stroke end whenever release pressure is removed, holding the load without live air. A carbon steel rod and PT tapered ports come standard, and the integrated -S magnet supports position sensing with CMSE reed or DMSE electronic switches.
This 40mm bore generates 879N of push force at 0.7MPa and operates at speeds between 30 and 800mm/s. While the variable air cushion decelerates the piston near the stroke terminals, the lock is what actually holds the load. Note that the cushion at the locker end is specifically shorter at 20mm compared to the 27mm cushion on the free end.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X100S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X100S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (27 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SAILF40X100S Is Used
Vertical Lift Safety
Holds an extended vertical load securely in place during a power loss, preventing gravity-driven drops.
Flow Control Gate
Locks a diverter gate open at the extended stroke end to maintain a clear material flow path.
Clamp and Hold
Extends a clamp to secure a workpiece and mechanically locks it without consuming continuous air pressure.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X100S the Right Lock Cylinder?
Choose this 40mm bore when 879N push force at 0.7MPa is sufficient; step up to the 50mm bore if you need 1374N, or down to a 32mm non-SAIL alternative for lighter loads. Select this SAILF variant when you must hold the rod in the extended position, whereas a SAILB holds the retracted position. If your application requires locking at an arbitrary mid-stroke point rather than the stroke end, use the BSAI clamp-lock cylinder instead.
For safe operation, remember this is a static holding lock that engages after the cylinder stops, not a dynamic brake. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; always use an independent-exhaust solenoid valve. For human-safety critical loads, add an independent safety measure. Replacement requires matching the 40mm bore, 100mm stroke, front lock position, 1/4 PT ports, and standard mounting options 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 SAILF40X100S FAQ
At 0.7MPa operating pressure, this 40mm bore cylinder provides 879N of push force and 528N of pull force. It can achieve a maximum push of 1130N at 0.9MPa.
The lock is spring-applied and air-released, holding the rod securely at the extended stroke end when air pressure is cut. You can unlock it automatically by supplying release air to the port, or manually via the release lever. It is a static hold only, not a mid-stroke clamp.
Related AirTAC Lock & Standard Cylinders
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