Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X200
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X200 is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 200mm 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.
- BoreØ63 mm
- Stroke200 mm
- Port sizeG3/8
- Lock positionFront cover
- Rod threadM16×1.5
- 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 SAILF63X200
The AirTAC SAILF63X200 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. It delivers a thrust of 1559N at 0.5MPa and safely secures the piston rod at the fully extended stroke end. The lock is spring-applied and air-released, meaning it engages automatically when air supply is cut, holding the load without live pressure. You can release it by supplying air to the release port or by using the manual override lever.
Unlike a standard SAI cylinder, this unit provides true power-failure safety. The variable air cushion at the locker end is 21mm, intentionally shorter than the 30mm cushion on the free end to accommodate the locking mechanism. For position sensing, adding a -S magnet allows the use of CMSE reed or DMSE electronic sensors.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X200 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X200 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 200 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 (30 mm free end / 21 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SAILF63X200 Is Used
Vertical Lift Safety
Prevents a raised platform from dropping if air pressure suddenly fails, locking the rod securely at the extended end.
Flow Control Gate
Holds a diverter gate open against material flow without consuming compressed air during the hold period.
Clamp and Hold
Maintains outward clamping pressure on a machined part during a power loss until the process safely resets.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X200 the Right Lock Cylinder?
Choose this 63mm bore cylinder when an application requires holding a load at the rod-out position without continuous air supply. If you need higher force, stepping up to the 80mm bore yields 2513N at 0.5MPa. Conversely, the 50mm bore offers 982N for lighter tasks. Select SAILF to hold at extension and SAILB to hold at retraction. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, use the BSAI clamp-lock cylinder instead.
Remember that this lock is a static holding device, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves with this cylinder, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve. For human-safety critical loads suspended in the air, always add an independent mechanical safety measure. Replacement parts must match the 63mm bore, 200mm stroke, front locker position, 3/8 PT port, and your required mounting style.
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 SAILF63X200 FAQ
The 63mm bore generates a push force of 1559N and a pull force of 1402N at 0.5MPa. At 0.7MPa, the push force increases to 2182N.
The lock is spring-applied and air-released. It engages automatically when the piston reaches the extended stroke end and air is cut off. To unlock, supply release air or use the manual lever. It only holds at this stroke end, not mid-stroke.
Related AirTAC Lock & Standard Cylinders
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