Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X300S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X300S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 300mm 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.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- 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 SAILF200X300S
The AirTAC SAILF200X300-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. This spring-applied, air-released lock engages automatically when the piston reaches the extended stroke end, securely holding the rod-out position without requiring live pressure. Equipped with a standard carbon steel rod and a magnetic piston, it supports AirTAC CMSE reed and DMSE electronic sensors for precise end-position detection. Delivering a robust 15708N push force at 0.5 MPa, it is designed for heavy-duty load-holding tasks.
A key design trait of this SAILF model is its variable air cushion system, which decelerates the piston near stroke terminals but does not hold the load—the mechanical lock performs that function. Notably, the cushion stroke at the locker end measures 28mm, shorter than the 50mm cushion found on the free end. The lock itself can be released automatically by supplying air to the release port or manually via the override lever. Because the lock engages only at the extended stroke end, it provides a static hold after the cylinder stops rather than acting as a dynamic mid-stroke brake.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X300S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X300S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 300 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable (50 mm free end / 28 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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 SAILF200X300S Is Used
Overhead Lift Holding
Secures heavy lifted loads in the extended position instantly upon air pressure loss, preventing accidental drops on vertical lifting machinery.
Safety Gate Locking
Maintains heavy safety gates or machine guards in the open, extended state without consuming continuous air, releasing only when control pressure is restored.
Press Clamp Retention
Holds a press clamp firmly at the extended stroke end during assembly operations, ensuring the clamp remains engaged even if the main air supply fluctuates.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X300S the Right Lock Cylinder?
Choose this 200mm bore cylinder when an application demands immense thrust and guaranteed load retention at the rod-out position during power loss. If your system only requires 10053N of push force at 0.5 MPa, stepping down to the 160mm bore saves space and air consumption. Select this SAILF front-locker variant when the extended position must be held; for holding the retracted position, the SAILB back-locker version is required. If your process demands clamping at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead.
When integrating this 300mm stroke model, verify side-load capabilities and use appropriate guide rails to prevent rod damage, as long strokes amplify lateral stress. For reliable lock performance, avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally lift the lock; an independent-exhaust solenoid valve is recommended. Always confirm the exact lock holding force from the official datasheet, and if human safety depends on the load remaining extended, add an independent mechanical safety measure. Replacement specifications require a 200mm bore, 300mm stroke, front locker position, PT port threads, and the -S magnet option.
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 SAILF200X300S FAQ
The 200mm bore generates a push force of 15708N and a pull force of 15080N at 0.5 MPa. At 0.7 MPa, the push force increases to 21991N, with a maximum push force of 28274N at 0.9 MPa.
The lock is spring-applied and air-released, located in the front cover. It engages statically when the piston reaches the extended stroke end, holding the load without live pressure. It is not a mid-stroke clamp or dynamic brake. Unlocking occurs automatically via air release or manually via the lever, but back-pressure from fast-exhaust valves must be avoided to prevent accidental unlocking.
Related AirTAC Lock & Standard Cylinders
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