Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450 is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 450mm 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
- Stroke450 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 SAILF200X450
The AirTAC SAILF200X450 is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the front cover, designed to secure the rod at the extended stroke end. Built with a carbon steel rod, it delivers a robust 3204 kgf maximum thrust class while operating at speeds of 30-500 mm/s. Because the lock is spring-applied and air-released, cutting the release air immediately engages the lock pin, holding the load securely without relying on continuous live pressure.
This model features a PT tapered port thread and an extruded aluminum barrel with sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic sensors if a magnet is added later. The variable air cushion at the locker end is specifically machined shorter (28 mm) than the free end cushion (50 mm) to accommodate the locking mechanism. For safe operation, avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve instead.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAILF200X450 Is Used
Heavy Vertical Lifts
Secures heavy elevated loads at the extended stroke end during power loss, preventing sudden drops on large lifting platforms.
Large Press Hold
Maintains high-force clamping pressure on massive press assemblies without consuming continuous compressed air.
Gate Safety Hold
Locks heavy industrial safety gates in the open position securely, requiring an explicit air release signal to move.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X450 the Right Lock Cylinder?
Choose this 200 mm bore cylinder when an application requires massive push force—up to 15708 N at 0.5 MPa—and a guaranteed hold at the rod-out position. If the 200 bore exceeds your requirement, stepping down to a 160 mm bore still provides 10053 N of thrust at 0.5 MPa. Select the SAILF configuration when the load must be suspended at the extended stroke end, and choose SAILB if it must be held retracted. If your process requires clamping at an arbitrary mid-stroke point rather than a stroke-end terminal, the BSAI clamp-lock cylinder is the correct solution.
The lock engages only after the cylinder has stopped, acting as a static holding device rather than a dynamic brake. Because this 450 mm stroke exceeds 300 mm, incorporating an external guide mechanism is recommended to prevent excessive side-loading on the rod. Always confirm the exact lock holding force from the datasheet, and if human safety depends on the load remaining elevated, add an independent mechanical safety measure. Replacement matches require the exact bore, stroke, front locker position, PT port thread, and mounting style from the Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, or TCM2 options.
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 SAILF200X450 FAQ
The 200 mm bore provides a push force of 15708 N at 0.5 MPa and 21991 N at 0.7 MPa, reaching a maximum of 3204 kgf at 1.0 MPa. The pull force at 0.5 MPa is 15080 N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold after the rod stops, not a dynamic brake. Unlocking is done automatically via air pressure or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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