Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X25S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X25S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 25mm 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
- Stroke25 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 SAILF200X25S
The AirTAC SAILF200X25-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock housed in the front cover. Because this is a SAILF variant, the spring-applied, air-released lock engages precisely at the extended rod-out stroke end. It provides immense thrust, generating 15708N of push force at 0.5MPa and reaching a maximum of 3204 kgf at 1.0MPa, making it ideal for heavy-duty holding tasks.
This model includes a standard -S magnet for position sensing via CMSE reed switches or DMSE solid-state electronic sensors. The lock is a static holding device that engages only after the piston stops at the stroke terminal; it is not a dynamic brake for a moving rod. Note that the variable air cushion at the locker end is 28mm, intentionally shorter than the 50mm cushion on the non-locker end, which is critical for end-of-stroke deceleration before the lock pins engage.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X25S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X25S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAILF200X25S Is Used
Heavy Lift Safety Hold
Secures massive elevated platforms or lifting jigs in the extended position automatically during a power loss, preventing catastrophic drops.
Press Clamp Retention
Maintains high-force clamping pressure at the extended stroke end without continuously consuming compressed air.
Safety Gate Locking
Locks heavy industrial safety gates or doors in the open extended position until an intentional air release signal is sent.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X25S the Right Lock Cylinder?
Select this 200mm bore cylinder when an application demands massive pneumatic thrust combined with guaranteed load holding on power loss. If you require less force, stepping down to the 160mm bore yields 10053N of push force at 0.5MPa. Choose SAILF to secure the load at the fully extended position, whereas SAILB holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, you must select the BSAI clamp-lock cylinder instead.
The lock holds the load securely without live pressure, but it is strictly a stroke-end static hold. Never use a fast-exhaust valve with this lock cylinder; always use an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the lock. For any human-safety application where a suspended load must stay up, add an independent secondary safety measure. Replacement matches require a 200mm bore, 25mm stroke, front locker position, PT threaded ports, and the -S magnet option.
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 SAILF200X25S FAQ
At a 0.5MPa operating pressure, this 200mm bore cylinder generates 15708N of push force and 15080N of pull force. At the maximum rated pressure of 1.0MPa, it delivers a peak push force of 3204 kgf.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end. It holds the load statically without live pressure. To unlock, supply air to the release port for automatic release, or use the manual release lever. Never use a fast-exhaust valve, as back-pressure can release the lock.
Related AirTAC Lock & Standard Cylinders
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