Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200 is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke200 mm
- Port sizeG1/4
- 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 SAILF50X200
The AirTAC SAILF50X200 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. It securely holds the rod at the extended stroke-end position, delivering 982N of push force and 825N of pull force at 0.5 MPa. This design ensures your load remains safely locked in place without requiring continuous live air pressure.
Unlike a standard SAI cylinder, this SAILF model features a variable air cushion at both ends, but the locker-end cushion is notably shorter at 20mm compared to 30mm on the free end. The carbon steel rod uses an M16x1.5 thread, and because no magnet is specified, it will not support CMSE or DMSE sensors without modification.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 200 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| 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 / 20 mm lock end) |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SAILF50X200 Is Used
Extended Lift Hold
Maintains vertical elevation safely when air pressure drops, locking securely at the rod-out stroke end.
Power Failure Safety
Prevents sudden collapses during power outages by engaging the spring-applied lock instantly upon loss of release air.
End-of-Stroke Stop
Holds a diverter or gate firmly open at the extended position without consuming continuous pneumatic energy.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200 the Right Lock Cylinder?
Choose this 50mm bore when you need 825N of pull force holding power at the extended position; if your application requires less force, step down to a 40mm bore providing 528N pull, or upgrade to a 63mm bore for 1402N. Select SAILF for front-cover locking at the rod-out position, whereas SAILB holds the retracted position. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead.
Remember that this lock is a static holding device that engages only after the piston reaches the extended terminal, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; always use an independent-exhaust solenoid valve. For safety-critical suspended loads, add an independent mechanical safety measure. Replacement requires matching the 50mm bore, 200mm stroke, front lock position, PT port threads, and 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 SAILF50X200 FAQ
At 0.5 MPa operating pressure, the 50mm bore provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it achieves up to 200 kgf.
The lock is spring-applied and air-released, holding the rod statically only at the extended stroke end. It unlocks automatically by supplying air to the release port or manually via the override lever.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X200
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.