Airtac SAILB Rear Lock Cylinder SAILB200X1000S
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB200X1000S is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 1000mm stroke and a built-in spring-applied, air-released mechanical lock in the back cover — it holds the load at the retracted (rod-in) stroke end even when air is lost.
- BoreØ200 mm
- Stroke1000 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB200X1000S
The AirTAC SAILB200X1000-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the back 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 retracted stroke end without requiring live pressure. Built with a carbon steel rod and a magnetic piston for position sensing, this 200mm bore unit delivers a substantial 15080N pull force at 0.5 MPa, making it ideal for heavy-duty vertical holding tasks.
The lock engages only after the piston stops at the stroke terminal, functioning as a static holding device rather than a dynamic brake for a moving rod. To unlock, supply air to the release port for automatic operation or use the manual release lever. Note that the variable air cushion at the locker end is 28mm, which is shorter than the 50mm cushion at the free end, ensuring the locking mechanism fits cleanly within the end cover.
Airtac SAILB Rear Lock Cylinder SAILB200X1000S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB200X1000S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 1000 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| Lock type | Spring-applied, air-released (back 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 retracted (rod-in) 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 back-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 SAILB Rear Lock Cylinder SAILB200X1000S Is Used
Heavy Vertical Lifts
Secures massive elevated loads in the retracted position instantly upon air pressure loss, preventing sudden drops in heavy material handling.
Safety Gate Holdback
Maintains a safety barrier or heavy gate in the pulled-back position during maintenance or power outages until release air is restored.
Press Clamping
Delivers 15708N of thrust at 0.5MPa to drive a press action and firmly locks the retracted tooling in place between cycles.
Is the Airtac SAILB Rear Lock Cylinder SAILB200X1000S the Right Lock Cylinder?
Select this 200mm bore model when an application demands high force alongside guaranteed load holding on power loss; if less thrust is acceptable, the 160mm bore provides 9425N pull at 0.5MPa. Choose this SAILB variant to hold the rod in the retracted position, whereas a SAILF front-lock version holds the extended rod out. If your process requires clamping at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead. For this 1000mm stroke, fitting an external guide is strongly recommended to prevent excessive side loads from damaging the rod seals.
When integrating this cylinder, never use a fast-exhaust valve, as back-pressure on the locker side can unintentionally release the lock; an independent-exhaust solenoid valve is required. Always verify the exact lock holding capacity from the official datasheet, and if human safety depends on the load remaining elevated, install an independent mechanical safety measure as a backup. Replacement parts must match the 200mm bore, 1000mm stroke, PT port threads, and the -S magnet specification for CMSE reed and DMSE electronic sensors.
Quick checklist
- ✓ Hold needed at the retracted (rod-in) end?
- ✓ Or lock anywhere → use BSAI
- ✓ Independent-exhaust valve fitted
- ✓ Port/thread type (PT/G)
- ✓ Extra safety measure for people
Airtac SAILB Rear Lock Cylinder SAILB200X1000S FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
The lock is spring-applied and air-released, engaging only when the piston reaches the retracted stroke end to provide a static hold. It unlocks automatically via air supply or manually via a lever, but it does not clamp at mid-stroke; for any-position locking, use a BSAI cylinder.
Related AirTAC Lock & Standard Cylinders
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