Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150 is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm bore, 150mm 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
- Stroke150 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 SAILF63X150
The AirTAC SAILF63X150 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages when the piston reaches the extended stroke end, securely holding the rod-out position without requiring live air pressure. Delivering a push force of 2182 N at 0.7 MPa, it utilizes a 20 mm carbon steel rod and 3/8 PT tapered ports.
Because the lock occupies the front cover, the variable air cushion on that locker end is shortened to 21 mm, compared to 30 mm on the free end. The lock releases automatically via air supply or manually via a lever, but avoid fast-exhaust valves; back-pressure on the locker side can inadvertently lift the lock pin.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAILF63X150 Is Used
Vertical Lift Hold
Maintains an elevated load safely at the extended stroke end during a power loss event, preventing sudden drops.
Extended Transfer Stop
Locks a diverter or gate in the rod-out position to halt product flow without consuming continuous air.
Safety Guard Position
Secures a machine guard in the open, extended position until the release air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150 the Right Lock Cylinder?
Choose this 63 mm bore when an application requires holding a load securely at the fully extended position, stepping up from a 50 mm bore that yields 1374 N at 0.7 MPa. If the load must be held retracted instead, select the SAILB variant. For applications requiring mid-stroke clamping rather than end-of-stroke holding, the BSAI clamp-lock cylinder is the correct choice. Always confirm the exact lock holding force from the datasheet, as this is a static hold that engages after the cylinder stops, not a dynamic brake for a moving rod.
When replacing this cylinder, match the 63 mm bore, 150 mm stroke, front locker position, 3/8 PT port thread, and mounting type. Standard carbon steel rod material applies. If position sensing is needed, note this unit lacks a magnet; an -S suffix version is required to use AirTAC CMSE reed or DMSE electronic solid-state sensors.
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 SAILF63X150 FAQ
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At 0.7 MPa, the push force increases to 2182 N.
The lock is spring-applied and air-released, engaging only at the extended stroke end. It provides a static hold after the rod stops, releasing via air pressure or a manual lever. It does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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