Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000 is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm bore, 1000mm 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
- Stroke1000 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 SAILF50X1000
The AirTAC SAILF50X1000 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 when the piston reaches the extended stroke end, ensuring your load remains securely held even if air pressure is completely lost. With a 50mm bore, it generates 982N of thrust at 0.5MPa and utilizes a carbon steel rod for structural durability.
This model operates at speeds of 30-800mm/s and features a PT tapered port thread. The variable air cushion at the locker end is 20mm, intentionally shorter than the 30mm cushion at the free end to accommodate the locking mechanism. To unlock, supply air to the release port for automatic retraction or use the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 1000 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 SAILF50X1000 Is Used
Extended Stroke Load Holding
Maintains vertical loads securely at the fully extended stroke end during power loss, preventing sudden drops in lifting equipment.
Long-Travel Conveyor Stop
Locks a 1000mm extended barrier in place to halt product flow on assembly lines without consuming continuous air pressure.
Safety Gate Interlock
Holds a protective machine guard open at the end of its 1000mm travel, requiring an intentional air release signal to close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000 the Right Lock Cylinder?
Choose this 50mm bore when your application requires 982N push force at 0.5MPa; stepping up to a 63mm bore provides 1559N, while dropping to a 40mm bore yields 628N. Select the SAILF configuration when the load must be held at the extended rod-out position, and choose SAILB if holding at the retracted position is required. If your process demands locking at an arbitrary mid-stroke point rather than a stroke end, the BSAI clamp-lock cylinder is the correct solution.
Remember that the SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock; instead, use an independent-exhaust solenoid valve. For any safety-critical vertical lift, add an independent mechanical safety measure. At 1000mm stroke, ensure external guide shafts are used to prevent excessive side-load wear on the seals. Replacement matches require 50mm bore, 1000mm stroke, front locker position, PT port, and standard mounting.
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 SAILF50X1000 FAQ
At 0.5MPa, the 50mm bore provides 982N of push force and 825N of pull force. At 0.7MPa it provides 1374N of push force.
The lock is spring-applied and air-released, engaging statically when the piston reaches the extended stroke end. It holds without live pressure and unlocks via an air release port or manual lever.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X1000
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.