Airtac SAILB Rear Lock Cylinder SAILB100X100S
The AirTAC SAILB Rear Lock Cylinder SAILB100X100S is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 100mm 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
- Stroke100 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 SAILB100X100S
The AirTAC SAILB100X100-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the back cover. This mechanism engages when the piston reaches the retracted stroke end, firmly holding the rod in place without requiring continuous live air pressure. In the 100mm bore class, it generates 3927N of push force and 3681N of pull force at 0.5MPa, making it well-suited for heavy vertical load management.
Equipped with a -S magnet, this unit supports AirTAC CMSE reed and DMSE electronic solid-state sensors for precise position feedback. A notable design trait is the shorter variable air cushion at the locker end (24mm versus 36mm at the free end), which accommodates the locking hardware without sacrificing end-of-stroke deceleration. The standard carbon steel rod provides robust resistance to bending under high side loads.
Airtac SAILB Rear Lock Cylinder SAILB100X100S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB100X100S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAILB100X100S Is Used
Vertical Lift Holding
Secures elevated loads in the retracted position during a power loss event, preventing sudden drops in heavy lifting rigs without relying on continuous air supply.
Safety Gate Locking
Keeps heavy machine safety gates firmly pulled back and locked open at the stroke end until the air-release port is actively pressurized to disengage the mechanism.
Clamp and Hold
Maintains a rigid retracted clamping state on heavy fabrication parts, ensuring the workpiece remains fixed without consuming pneumatic energy during the hold cycle.
Is the Airtac SAILB Rear Lock Cylinder SAILB100X100S the Right Lock Cylinder?
Select this 100mm bore model when an application demands substantial holding power at the retracted position; if less force is required, stepping down to an 80mm bore yields 2513N push at 0.5MPa. Choose the SAILB configuration specifically to secure the rod-in state, whereas a SAILF variant would hold the extended position. If your workflow requires clamping at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the correct alternative.
Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Crucial valve selection is required: never use a fast-exhaust valve, and always utilize an independent-exhaust solenoid valve, because back-pressure on the locker side can inadvertently release the lock. For safety-critical lifting applications, always add an independent mechanical safety measure. Replacement specifications must match the 100mm bore, 100mm stroke, back locker position, PT tapered port threads, and -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 SAILB100X100S FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The lock is spring-applied and air-released, located in the back cover to hold the rod only at the retracted stroke end. It engages statically after the piston stops and is unlocked by supplying air to the release port or by using the manual release lever; it does not clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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