Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S is a genuine double-acting ISO 15552 profile cylinder with a Ø40mm bore, 200mm 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.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM12×1.25
- 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 SAILF40X200S
The AirTAC SAILF40X200-S is a double-acting ISO 15552 profile cylinder featuring a mechanical lock housed in the front cover. Because the lock is spring-applied and air-released, cutting the release air drives a pin into the rod to securely hold the load at the extended stroke end without requiring live pressure. In this 40mm bore class, it delivers a push force of 879N at 0.7MPa, making it well-suited for lighter vertical lifting tasks.
This model includes a magnet for position sensing with AirTAC CMSE reed and DMSE electronic switches. A notable design detail is the variable air cushion: the cushion at the locker end measures 20mm, which is shorter than the 27mm cushion on the free end. The standard carbon steel rod provides durable service, and you can unlock the rod automatically by supplying air to the release port or by using the manual release lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (27 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SAILF40X200S Is Used
Vertical Lift Safety
Holds an extended vertical load securely in place if air pressure drops, preventing sudden falls on light-duty elevators.
Pallet Stop Arm
Locks a diverter arm in the extended position to halt pallets, maintaining the stop without consuming continuous air.
Guard Door Hold
Keeps a machine safety gate open at the end of its stroke, requiring an intentional air pulse to release and close.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S the Right Lock Cylinder?
Choose this 40mm bore when your application requires holding a load safely at the extended stroke end during a power loss. If you need greater thrust, stepping up to the 63mm bore provides a push force of 2182N at 0.7MPa; for lighter duties, note that SAIL does not offer a 32mm bore. Select SAILF to hold the rod-out position, whereas SAILB holds the retracted position.
Remember that this lock engages only after the cylinder has stopped at the stroke terminal; it is a static holding device, not a dynamic brake for a moving rod. If your application requires clamping at an arbitrary mid-stroke point, use the BSAI clamp-lock cylinder instead. Valve selection is critical: avoid fast-exhaust valves, as back-pressure on the locker side can inadvertently release the lock. Use an independent-exhaust solenoid valve. For this 200mm stroke, ensure adequate side-load guidance to protect the seals. Replacement specifications: 40mm bore, 200mm stroke, front lock, PT ports, double-acting, with -S magnet.
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 SAILF40X200S FAQ
At 0.5MPa it provides 628N push and 528N pull force. At 0.7MPa the push force is 879N, reaching 1130N at 0.9MPa.
The lock is spring-applied and air-released, engaging only when the rod reaches the extended stroke end. It holds statically after stopping. You can release it automatically via air pressure or manually via a lever, but it cannot clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF40X200S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.