Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 400mm 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
- Stroke400 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 SAILF200X400S
The AirTAC SAILF200X400-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, cutting the release air automatically drives a lock pin into the rod to securely hold the load at the extended stroke end without consuming live pressure. Equipped with a magnetic piston, it supports AirTAC CMSE reed and DMSE solid-state sensors for precise position verification.
Delivering immense thrust, this 200mm bore model generates 15708N of push force and 15080N of pull force at 0.5MPa. The carbon steel rod provides robust durability for heavy loads, while the variable air cushion at the locker end is notably shorter at 28mm compared to the 50mm cushion on the free end. For safe operation, the lock functions as a static holding device that engages after the piston stops, rather than a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAILF200X400S Is Used
Vertical Lift Holding
Maintains heavy elevated loads at the extended stroke end automatically upon air pressure loss, preventing sudden drops in heavy lifting presses.
Safety Gate Locking
Secures large industrial safety gates in the open position without continuous air consumption, ensuring safe personnel access.
Heavy Clamp and Hold
Applies 15708N of clamping force at 0.5MPa and mechanically locks the extended position during power loss on heavy assembly lines.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S the Right Lock Cylinder?
Choose this 200mm bore for heavy-load vertical lifting requiring 15708N push at 0.5MPa; if your application needs less force, stepping down to a 160mm bore provides 10053N. Select this SAILF model specifically when the load must be held securely at the extended rod-out position. If your machinery requires clamping at an arbitrary mid-stroke point, the BSAI clamp-lock cylinder is the correct alternative.
Because the stroke is 400mm, adding an external guide is recommended to manage side loads and prevent rod binding. To maintain lock integrity, never use a fast-exhaust valve; instead, use an independent-exhaust solenoid valve, as back-pressure on the locker side can accidentally release the lock. For human safety, always add an independent mechanical safety measure. Replacement requires matching the 200mm bore, 400mm stroke, front lock position, PT port threads, and the -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 SAILF200X400S FAQ
At 0.5MPa, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. It reaches a maximum push force of 21991N at 0.7MPa and 28274N at 0.9MPa.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end when air is cut. It unlocks automatically by supplying release air or manually via a lever. It is not a mid-stroke clamp; use BSAI for any-position locking.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac SAILF Front Locking Pneumatic Cylinder SAILF200X400S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.