Airtac SAILB Rear Lock Cylinder SAILB100X200S
The AirTAC SAILB Rear Lock Cylinder SAILB100X200S is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 200mm 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.
- BoreØ100 mm
- Stroke200 mm
- Port sizeG1/2
- Lock positionBack cover
- Rod threadM20×1.5
- 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 SAILB Rear Lock Cylinder SAILB100X200S
The AirTAC SAILB100X200-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the back cover. A carbon steel rod provides robust operation, while the -S magnet enables position sensing with CMSE reed or DMSE electronic switches. Because the lock sits in the back, it engages when the piston reaches the retracted stroke end, firmly holding the load in the rod-in position.
This lock is spring-applied and air-released, meaning it secures the rod automatically when release air is cut, requiring no live pressure to maintain the hold. You can unlock it by supplying air to the release port for automatic release, or by using the manual release lever. Note that the variable air cushion at the locker end is shorter (24 mm) than the free end (36 mm), as the locking mechanism occupies internal space.
Airtac SAILB Rear Lock Cylinder SAILB100X200S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB100X200S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 200 mm |
| Acting type | Double acting, with lock |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable (36 mm free end / 24 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SAILB100X200S Is Used
Vertical Lift Holding
Secures elevated loads in the retracted position instantly upon air pressure loss, preventing sudden drops on lifting machinery.
Clamp and Secure
Maintains reliable clamping force at the rod-in stroke end without continuously consuming compressed air during the hold.
Gate Safety Lock
Keeps heavy safety gates firmly shut in the retracted position during power outages until deliberate air release is commanded.
Is the Airtac SAILB Rear Lock Cylinder SAILB100X200S the Right Lock Cylinder?
Providing 5497 N of push force at 0.7 MPa, this 100 mm bore is ideal for heavy-duty holding. If your application requires less force, the 80 mm bore offers 3518 N at 0.7 MPa; for heavier loads, the 125 mm bore provides 8590 N. Choose this SAILB model specifically when you need the load held at the retracted stroke end; select a SAILF variant if the extended position must be secured.
If your setup requires clamping at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice. The SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve instead. For safety-critical suspended loads, always add an independent mechanical safety measure. Replacement matches must verify the 100 mm bore, 200 mm stroke, back locker position, PT port threads, and the -S magnet.
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 SAILB100X200S FAQ
At 0.7 MPa operating pressure, the 100 mm bore provides 5497 N of push force and 3681 N of pull force. The maximum operating pressure is 1.0 MPa.
The spring-applied, air-released lock engages when the piston reaches the retracted stroke end. It holds the rod statically without live air pressure. You can unlock it via automatic air release or a manual lever.
Related AirTAC Lock & Standard Cylinders
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