Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 900mm 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.
- BoreØ200 mm
- Stroke900 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- 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 SAILF200X900S
The AirTAC SAILF200X900-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the front cover, holding the rod securely at the extended stroke end. A carbon steel rod and PT tapered ports support heavy thrust, yielding 15708N push and 15080N pull at 0.5 MPa. The integrated spring-applied, air-released lock engages automatically when the piston reaches the extended terminal, ensuring your load stays fixed without relying on continuous air pressure.
This 900mm stroke model operates at 30-500 mm/s and includes a magnetic piston for precise position sensing via CMSE reed or DMSE electronic switches. The variable air cushion at the locker end is 28mm, deliberately shorter than the 50mm cushion at the free end to accommodate the locking hardware. The lock releases automatically via air supply or manually via a lever, providing dependable fail-safe load holding.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 900 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable (50 mm free end / 28 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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 SAILF200X900S Is Used
Extended Load Safety
Holds heavy lifted loads securely in the extended position during unexpected air pressure loss.
Material Transfer Hold
Locks the rod out at the end of stroke to maintain conveyor diverter position without live air.
Gate Guard Positioning
Keeps safety gates and heavy barriers fully extended and locked until the release air is supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900S the Right Lock Cylinder?
Select this 200mm bore size when an application demands maximum thrust up to 15708N at 0.5MPa, or scale down to the 160mm bore if your load requires less force (10053N push at 0.5MPa). Choose the SAILF configuration to secure loads in the extended rod-out position, whereas SAILB holds the retracted position. If your process requires locking at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead. For any stroke length of 900mm, incorporating external guide rails is critical to prevent excessive side-load wear on the cylinder rod and front cover lock pin.
When integrating this cylinder, never use a fast-exhaust valve, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. The SAIL lock is a static holding device that engages after the rod stops, not a dynamic brake for a moving load. If human safety depends on the load remaining extended, add an independent mechanical safety measure. Replacement parts must match the 200mm bore, 900mm stroke, front locker position, PT ports, and -S magnet specification.
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 SAILF200X900S FAQ
At 0.5 MPa operating pressure, the 200mm bore provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it delivers 3204 kgf.
The lock is spring-applied and air-released. It engages statically only when the piston reaches the extended stroke end, not at mid-stroke. It unlocks automatically by supplying air to the release port or manually via the lever. Avoid fast-exhaust valves, as back-pressure can release the lock.
Related AirTAC Lock & Standard Cylinders
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