Airtac SAILB Rear Lock Cylinder SAILB160X1000S
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB160X1000S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm 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.
- BoreØ160 mm
- Stroke1000 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB160X1000S
The AirTAC SAILB160X1000-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the back cover. Because it is a back-lock variant, the spring-applied, air-released mechanism engages only when the piston reaches the fully retracted stroke end, securing the load without relying on live air pressure. In the 160mm bore class, it delivers a substantial 14074N of push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This model includes a magnetic piston (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides, and the standard carbon steel rod handles high side loads. Notably, the variable air cushion at the locker end is shorter (28mm) than at the free end (50mm) to accommodate the locking hardware. The lock releases automatically via air pressure or manually via a lever, but you must avoid fast-exhaust valves to prevent back-pressure from accidentally disengaging the lock.
Airtac SAILB Rear Lock Cylinder SAILB160X1000S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB160X1000S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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 SAILB160X1000S Is Used
Vertical Power-Off Hold
Secures heavy elevated loads in the retracted position instantly if air pressure drops, preventing sudden crashes in heavy lifting assemblies.
Retracted Stroke End Clamp
Maintains a rigid, zero-pressure hold on the rod-in position for heavy machining or clamping fixtures that require absolute stability.
Heavy Gate Safety
Keeps massive industrial safety gates and barriers locked firmly in the closed position until the air-release signal is actively applied.
Is the Airtac SAILB Rear Lock Cylinder SAILB160X1000S the Right Lock Cylinder?
Select this 160mm bore cylinder when an application requires holding a heavy load securely at the retracted position. If the 10053N push force at 0.5 MPa is insufficient, stepping up is not an option in this series, but stepping down to a 125mm bore yields 8590N at 0.7 MPa if a lighter, faster cycle is acceptable. Choose this SAILB configuration specifically when the rod-in state must be maintained during a power loss. If the load must be clamped at an arbitrary mid-stroke point rather than the stroke end, the BSAI clamp-lock cylinder is the correct choice instead.
This unit features a PT tapered port, a 1000mm stroke, and a standard carbon steel rod. Because the stroke is 1000mm, external guide rails are recommended to prevent excessive side-loading on the rod seals. Remember that this is a static holding lock that engages after the cylinder stops, not a dynamic brake. Never use a fast-exhaust valve; an independent-exhaust solenoid valve is required to ensure back-pressure on the locker side does not lift the lock. For human-safety critical lifts, always add an independent mechanical safety measure.
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 SAILB160X1000S FAQ
At 0.7 MPa operating pressure, this 160mm bore cylinder provides a push force of 14074N and a pull force of 9425N. It achieves a maximum push force of 10053N at 0.5 MPa.
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, not at mid-stroke. It unlocks automatically via air pressure or manually via a lever, and requires an independent-exhaust solenoid valve to prevent back-pressure from releasing the lock.
Related AirTAC Lock & Standard Cylinders
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