Airtac SAILB Rear Lock Cylinder SAILB100X700S
The AirTAC SAILB Rear Lock Cylinder SAILB100X700S is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm bore, 700mm 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
- Stroke700 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 SAILB100X700S
The AirTAC SAILB100X700-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the back cover. Because the lock engages when the piston reaches the retracted stroke end, it securely holds the rod-in position without requiring live air pressure. In the 100mm bore class, this cylinder generates 5497N of push force and 3681N of pull force at 0.7 MPa, making it suitable for heavy load management.
This model includes a magnetic piston (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the variable air cushion at the locker end is shorter (24mm) than the free end (36mm) to accommodate the locking mechanism. Unlocking is achieved automatically by supplying air to the release port or manually via the release lever.
Airtac SAILB Rear Lock Cylinder SAILB100X700S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB100X700S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 700 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 SAILB100X700S Is Used
Vertical Load Holding
Secures elevated loads in the retracted position automatically upon air pressure loss, preventing sudden drops in lifting assemblies.
Safety Gate Locking
Holds heavy safety gates or guards closed at the rod-in stroke end without consuming continuous pneumatic energy.
Pallet Stopper Hold
Maintains a rigid stop position for pallets on a conveyor line, using the mechanical lock to resist impact forces without live air.
Is the Airtac SAILB Rear Lock Cylinder SAILB100X700S the Right Lock Cylinder?
Choose this 100mm bore when a 80mm cylinder (providing 3518N push at 0.7 MPa) is insufficient, or step down if the 125mm class (8590N push) is excessive. Select the SAILB configuration when the load must be secured in the retracted position; if your application requires holding at the extended rod-out position, the SAILF variant is required instead. For applications needing mid-stroke clamping rather than end-of-stroke holding, the BSAI clamp-lock cylinder is the correct choice.
The lock is a static holding device that engages only after the cylinder has stopped, not a dynamic brake for a moving rod. To maintain lock integrity, do not use a fast-exhaust valve; instead, use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. If human safety depends on the load remaining retracted, add an independent safety measure. With a 700mm stroke, ensure adequate external guide rails to prevent excessive side-loading on the carbon steel rod. Replacement parts must match the bore, stroke, back locker position, PT port threads, and mounting style.
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 SAILB100X700S FAQ
At 0.7 MPa operating pressure, the 100mm bore provides 5497N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The lock is spring-applied and air-released, located in the back cover. It engages statically only when the rod reaches the fully retracted stroke end. It is unlocked by supplying air to the release port or by using the manual release lever; it does not clamp at arbitrary mid-stroke positions.
Related AirTAC Lock & Standard Cylinders
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