Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000S is a genuine double-acting ISO 15552 profile cylinder with a Ø40mm bore, 1000mm 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
- Stroke1000 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 SAILF40X1000S
The AirTAC SAILF40X1000-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because it is a front-locker (SAILF), the spring-applied, air-released lock engages when the piston reaches the extended rod-out stroke end. At 0.5 MPa it yields 628 N of push force, and the integrated -S magnet enables position feedback via CMSE reed or DMSE solid-state sensors.
This unit safely holds a static load without live air pressure, but only at that extended terminal. The variable air cushion at the locker end is specifically shorter (20 mm versus 27 mm at the free end) to accommodate the locking hardware. Remember that the lock is a static holding device, not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø40 mm |
| Stroke | 1000 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 SAILF40X1000S Is Used
Extended Stroke Hold
Secures vertical lifts and elevated platforms in the rod-out position instantly upon air pressure loss, preventing sudden drops.
Power-Outage Safety
Maintains the extended position of conveyor diverters and sorting gates during plant power failures without needing continuous air supply.
End-of-Stroke Clamp
Holds workpieces firmly at the extended stroke end for machining or assembly, ensuring no drift occurs while work is performed.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000S the Right Lock Cylinder?
Choose this 40 mm bore if 628 N of push at 0.5 MPa is sufficient; step down is not an option (SAIL has no 32 mm bore), but stepping up to the 50 mm bore provides 982 N if your load demands it. Select this SAILF variant when you must hold the load at the extended position; choose SAILB if you need the rod held retracted. If your application requires clamping at an arbitrary mid-stroke point, use the BSAI clamp-lock cylinder instead.
For reliable locking, never use a fast-exhaust valve, as back-pressure on the locker side can inadvertently release the lock; an independent-exhaust solenoid valve is required. At a 1000 mm stroke, the extended rod is highly susceptible to side-loads, so a non-rotating guide or external rail support is essential. To replace: match the 40 mm bore, 1000 mm stroke, front lock, PT port threads, and -S magnet.
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 SAILF40X1000S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 128 kgf.
The lock is spring-applied and air-released, engaging automatically when the rod reaches the extended stroke end. It holds the load statically without live pressure; supply air to the release port or use the manual lever to unlock it.
Related AirTAC Lock & Standard Cylinders
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