Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X600S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X600S is a genuine double-acting ISO 15552 profile cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke600 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 SAILF63X600S
The AirTAC SAILF63X600-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock in the front cover. This lock engages when the piston reaches the extended stroke end, securely holding a 600mm outward position without requiring continuous air pressure. It delivers 1559N of push force and 1402N of pull force at 0.5 MPa, utilizing a 3/8 PT port and a 20mm carbon steel rod. Equipped with a magnet, it supports CMSE reed and DMSE electronic sensors for precise position detection.
Because the lock mechanism occupies the front end, the variable air cushion at the locker end is 21mm, which is shorter than the 30mm cushion on the rear end. The lock is a static holding device, not a dynamic brake, meaning it secures the rod only after the cylinder has fully stopped. To unlock, you simply supply air to the release port or use the manual override lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X600S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X600S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAILF63X600S Is Used
Extended Lift Holding
Maintains a vertical lift in the extended position during compressed air loss, preventing sudden drops until the release port is intentionally pressurized.
Flow Control Diverter
Keeps a diverter arm locked outward into the conveyor line, ensuring the arm remains rigidly in place without consuming continuous pneumatic energy.
Safety Gate Barrier
Secures a heavy safety gate in the open extended position, using the mechanical lock to keep the path clear until the system actively releases the pin.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF63X600S the Right Lock Cylinder?
Choose this front-lock model when your application requires the load to be safely held in the extended position during a power loss. If you need to hold the rod in the retracted position instead, select the SAILB variant. For applications requiring the rod to be clamped at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct choice, as the SAIL lock only engages at the stroke terminal. If you need higher force, stepping up to the 80mm bore provides 2513N of push force at 0.5 MPa; dropping to the 50mm bore offers 982N.
When matching this cylinder for replacement, verify the 63mm bore, 600mm stroke, front locker position, 3/8 PT port, and the -S magnet option. Because the 600mm stroke is substantial, use a side-load guide to prevent rod bending and premature seal wear. Never use a fast-exhaust valve with this cylinder; always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. If human safety depends on the load staying extended, add an independent mechanical safety measure as well.
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 SAILF63X600S FAQ
At 0.5 MPa, the SAILF63X600-S provides 1559N of push force and 1402N of pull force. At 0.7 MPa, the push force increases to 2182N.
The lock is spring-applied and air-released, engaging only at the extended stroke end to hold the load statically without live pressure. It is not a mid-stroke clamp; use a BSAI for arbitrary positions. Unlock it automatically via the release port or manually via the lever.
Related AirTAC Lock & Standard Cylinders
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