Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600 is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm bore, 600mm 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
- Stroke600 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 SAILF50X600
The AirTAC SAILF50X600 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism secures the rod specifically at the extended stroke end, delivering a static hold without requiring live air pressure. It delivers 982N of push force and 825N of pull force at 0.5 MPa, utilizing a 20mm carbon steel rod.
Because the lock occupies the front end, the variable air cushion on that side is shortened to 20mm compared to the 30mm cushion on the free end. The cylinder operates at speeds between 30 and 800mm/s, and unlocking is achieved automatically by supplying air to the release port or manually via the lever. Position sensing is possible by specifying the -S magnet option to pair with AirTAC CMSE reed or DMSE electronic switches.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 600 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 SAILF50X600 Is Used
Extended Lift Holding
Secures vertical lifts in the extended rod-out position during air pressure loss, preventing sudden drops of elevated platforms or tooling.
Flow Stop Arm
Acts as a rigid stop gate at the end of the stroke to halt product flow on a conveyor, holding firmly even if shop air fluctuates.
Safety Guard Lock
Keeps machine safety doors and guards locked open at the full extended position until the release air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X600 the Right Lock Cylinder?
Choose this 50mm bore when an application requires 982N push force at 0.5 MPa, stepping up from a 40mm bore (628N push) for heavier vertical loads, or stepping down from a 63mm bore (1559N push) for space efficiency. Select the SAILF configuration when the load must be held safely at the extended rod-out position; choose SAILB instead to hold the retracted position. If your process requires clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice instead of this stroke-end lock.
For a 600mm stroke, external guide rails are strongly recommended to manage side loads and prevent rod binding. The 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 unintentionally release the lock; use an independent-exhaust solenoid valve. For human-safety critical suspended loads, always add an independent mechanical safety measure. Replacement specs: 50mm bore, 600mm stroke, front lock, PT 1/4 port, and standard mounting options including FA, FB, LB, and TC.
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 SAILF50X600 FAQ
At 0.5 MPa operating pressure, the SAILF50X600 provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The spring-applied lock engages automatically when the piston reaches the extended stroke end in the front cover, holding the load without live air. It releases by supplying air to the release port or by using the manual release lever. It does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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