Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900 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 SAILF200X900
The AirTAC SAILF200X900 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This lock engages when the piston reaches the extended stroke end, securely holding the rod out without requiring live air pressure. Designed for heavy-duty tasks, it yields a 0.5 MPa push force of 15708N and a pull force of 15080N. The carbon steel rod provides robust durability for high-stress industrial environments.
Because this is a non-standard 900mm stroke exceeding the typical 800mm envelope for smaller bores, it operates within a 30-500 mm/s speed range. A key design detail is the variable air cushion: the locker-end cushion is physically shorter (28mm) than the free-end cushion (50mm) to accommodate the locking mechanism. The lock itself is a static holding device, not a dynamic brake, and utilizes both automatic air and manual lever release methods for operational flexibility.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900 |
|---|---|
| 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 SAILF200X900 Is Used
Heavy Lift Holding
Secures elevated platens or massive lifts at the fully extended stroke end, preventing catastrophic drops when air pressure is removed.
Press Retention
Maintains outward clamping pressure on large fabricated components during power loss, ensuring the workpiece remains fixed without live air.
Gate Actuation
Holds heavy industrial loading dock gates open at the extended position, relying on the mechanical lock rather than constant pneumatic force.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X900 the Right Lock Cylinder?
Select this 200mm bore model when an application demands immense thrust and guaranteed rod-out positioning during power loss. If 15708N of push at 0.5 MPa is excessive, stepping down to a 160mm bore yields 10053N of push force. Choose the SAILF configuration specifically when the load must be secured at the extended position; conversely, select SAILB to hold the retracted position. If your application requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, the BSAI clamp-lock cylinder is the correct choice instead of this model.
When replacing or specifying this unit, verify the 900mm stroke, front locker position, 3/4 PT port threads, and carbon steel rod. For a 900mm stroke, external guide rails are strongly recommended to prevent excessive side-loading on the rod. Crucially, do not use a fast-exhaust valve with this cylinder; employ an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For any human-safety critical lifting application, always add an independent mechanical safety measure.
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 SAILF200X900 FAQ
At a standard 0.5 MPa operating pressure, this 200mm bore cylinder generates a push force of 15708N and a pull force of 15080N. At its maximum 1.0 MPa operating pressure, the push force reaches 3204 kgf.
The lock is spring-applied and air-released, engaging only when the rod reaches the fully extended stroke end. It provides a static hold, not a dynamic brake, and is released automatically by supplying air to the release port or manually via a lever. It cannot hold the rod at a mid-stroke position.
Related AirTAC Lock & Standard Cylinders
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