Airtac SAILB Rear Lock Cylinder SAILB160X75S
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB160X75S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 75mm 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
- Stroke75 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB160X75S
The AirTAC SAILB160X75-S is a double-acting ISO 15552 profile cylinder equipped with a mechanical lock in the back cover. It generates 10053N of push force at 0.5MPa and features a carbon steel piston rod. The lock is spring-applied and air-released, meaning it automatically engages to hold the rod securely at the retracted stroke end whenever release air is cut off.
This cylinder includes a -S magnet for position sensing, compatible with AirTAC CMSE reed and DMSE solid-state switches. Because the lock occupies the rear end, the variable air cushion on that side is shorter, measuring 28mm compared to the 50mm cushion on the free end. The lock is a static holding device that engages after the piston stops, not a dynamic brake for a moving rod.
Airtac SAILB Rear Lock Cylinder SAILB160X75S Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB160X75S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 75 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 SAILB160X75S Is Used
Vertical Load Holding
Maintains heavy lifted loads safely in the retracted position during a power loss event.
Power-Out Safety Gate
Keeps heavy safety barriers securely closed at the stroke end without needing live air pressure.
Static Press Hold
Locks a heavy press platen at the retracted terminal to secure the workpiece without air consumption.
Is the Airtac SAILB Rear Lock Cylinder SAILB160X75S the Right Lock Cylinder?
Choose this 160mm bore when an application requires substantial holding power at the retracted position without relying on continuous air pressure. If you need to secure the load at the extended stroke end instead, select the SAILF variant. For applications requiring mid-stroke clamping rather than end-of-stroke holding, the BSAI clamp-lock cylinder is the correct choice.
Ensure you use an independent-exhaust solenoid valve; fast-exhaust valves are strictly prohibited as back-pressure on the locker side can unintentionally release the lock. For safety-critical vertical loads, always add an independent mechanical safety measure. To replace this unit, match the 160mm bore, 75mm stroke, back locker position, PT port threads, and the -S magnet option.
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 SAILB160X75S FAQ
At 0.5MPa, it provides 10053N of push force and 9425N of pull force. At 0.7MPa, the push force is 14074N.
The lock is spring-applied and air-released. It holds the rod statically at the retracted stroke end without live pressure. You can unlock it automatically by supplying release air or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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