Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150S 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 SAILF63X150S
The AirTAC SAILF63X150-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock in the front cover. This mechanism engages when the piston reaches the extended stroke end, securely holding the rod-out position without requiring continuous live air pressure. In the 63 mm bore class, it generates 1559 N of push thrust and 1402 N of pull thrust at 0.5 MPa, utilizing a carbon steel rod and PT tapered port threads.
Because the lock physically occupies the front end, the variable air cushion on that locker side is shortened to 21 mm, compared to the 30 mm cushion on the free back end. The integrated -S magnet allows precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors. To maintain lock integrity, avoid fast-exhaust valves and utilize an independent-exhaust solenoid valve, as back-pressure on the locker side can inadvertently release the mechanism.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150S |
|---|---|
| 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 SAILF63X150S Is Used
Extended Lift Holding
Maintains vertical loads securely at the top extended stroke end, preventing crashes if air pressure drops during lifting operations.
Power-Loss Safety Gate
Keeps heavy safety gates and access doors firmly locked in the open extended position until the release air is actively supplied.
End-of-Stroke Clamping
Provides a reliable static hold for parts clamped at the forward stroke terminal, removing the need for continuous pneumatic energy.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X150S the Right Lock Cylinder?
Select this 63 mm bore model when your application demands secure load holding at the fully extended position; if you need to hold the retracted rod-in state instead, choose the SAILB variant. If your thrust requirements are lower, the 50 mm bore offers 982 N push force at 0.5 MPa, while stepping up to the 80 mm bore provides 2513 N. Remember that this unit provides a static hold only after the cylinder stops—it is not a dynamic brake for a moving rod. If the load must be clamped at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice.
When ordering a replacement, verify the 63 mm bore, 150 mm stroke, front locker position, PT port threads, and the -S magnet option. The cylinder supports the full ISO 15552 mounting set, including Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, and TCM2. For any safety-critical lifting application where human safety depends on the load staying elevated, always add an independent secondary safety measure alongside the lock.
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 SAILF63X150S FAQ
At 0.5 MPa operating pressure, the 63 mm bore generates 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold, not a mid-stroke clamp or dynamic brake, and can be unlocked automatically via air or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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