Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000 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 SAILF40X1000
The AirTAC SAILF40X1000 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. A spring-applied, air-released lock pin engages when the piston reaches the extended stroke end, securely holding the load without requiring live pressure. With a 40mm bore, it delivers 628N of push thrust at 0.5 MPa. The standard carbon steel rod provides durable service, and the tapered PT threads ensure tight pneumatic connections.
This model features a shorter variable air cushion at the locker end (20mm) compared to the free end (27mm), a specific design adaptation to house the locking mechanism. The lock is a static holding device that engages only after the cylinder stops; it is not a dynamic brake. For position sensing, adding a magnet allows the use of AirTAC CMSE reed or DMSE electronic sensors in the dual-side barrel grooves.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000 |
|---|---|
| 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 SAILF40X1000 Is Used
Extended Load Holding
Maintains vertical loads safely at the fully extended stroke end during a power loss, utilizing the spring-applied front lock.
Flow Control Gates
Secures diverter gates in the open position without consuming continuous air pressure, ensuring stable flow control.
Clamp and Hold
Provides a reliable static hold for end-of-stroke clamping fixtures, preventing workpiece drift when main air is removed.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X1000 the Right Lock Cylinder?
Choose this 40mm bore when your application requires securing a load at the fully extended position; if you need higher force, stepping up to the 50mm bore yields 982N of push force at 0.5 MPa. Select the SAILF front-locker configuration to hold the rod-out position, whereas a SAILB back-locker version holds the retracted position. If your design requires clamping at an arbitrary mid-stroke point rather than the stroke end, use the AirTAC BSAI clamp-lock cylinder instead.
Because the stroke is 1000mm, fitting external guide rails is highly recommended to prevent rod side-loading and binding. Always use an independent-exhaust solenoid valve rather than a fast-exhaust valve; back-pressure on the locker side can unintentionally release the lock. For human-safety critical suspended loads, add an independent mechanical safety measure beyond the pneumatic lock.
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 SAILF40X1000 FAQ
At 0.5 MPa operating pressure, the 40mm bore provides 628N of push thrust and 528N of pull thrust. At 0.7 MPa, the push force increases to 879N.
The lock is spring-applied and air-released, engaging statically at the extended stroke end. It does not clamp mid-stroke. Unlocking requires supply air to the release port or using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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