Airtac SAILB Rear Lock Cylinder SAILB160X700
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB160X700 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm 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.
- BoreØ160 mm
- Stroke700 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB160X700
The AirTAC SAILB160X700 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the back cover. This lock engages automatically to hold the rod securely at the retracted stroke end whenever the release air is cut, ensuring heavy loads remain safely in place without consuming live pressure. In the 160mm bore class, it generates a substantial 10053N pull force at 0.5MPa, making it well-suited for demanding industrial lifting tasks.
A key design detail is the variable air cushion at the locker end, which is shortened to 28mm compared to the 50mm cushion on the free end, accommodating the locking mechanism. The carbon steel rod provides high tensile strength for rigorous cycles. Remember that this unit performs a static hold after the piston stops; it is not a dynamic brake for a moving rod.
Airtac SAILB Rear Lock Cylinder SAILB160X700 Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB160X700 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 700 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 SAILB160X700 Is Used
Vertical Lift Power-Loss Hold
Secures elevated platens in the retracted position automatically when compressed air fails, preventing sudden drops of heavy machinery platforms.
Heavy Pallet Arrest
Holds a robust stopper block firmly in the rod-in position to halt large pallets on a high-mass conveyor line without requiring continuous air.
Safety Gate Locking
Keeps industrial safety gates tightly locked in the closed position during operation, releasing only when the control system supplies unlock air.
Is the Airtac SAILB Rear Lock Cylinder SAILB160X700 the Right Lock Cylinder?
Select this 160mm bore model when an application requires robust load-holding at the retracted position upon power loss. If your system needs less force, the 125mm bore offers 5734N of pull at 0.5MPa, while stepping up is not possible as 160mm is the second largest option. Choose this SAILB configuration specifically for holding the rod-in end; choose SAILF if the extended end must be secured. If the mechanism requires clamping at an arbitrary mid-stroke point rather than the terminal end, the BSAI clamp-lock cylinder is the correct alternative.
For safe operation, never use a fast-exhaust valve with this cylinder, as back-pressure on the locker side can inadvertently release the lock; always utilize an independent-exhaust solenoid valve. At a 700mm stroke, the 40mm carbon steel rod is subject to elevated bending moments, so external guide rails must be used to prevent side-load damage. When ordering a replacement, verify the 3/4 PT port, the required mounting style from the Basic, FA, FB, CA, CB, CR, LB, TC, FTC, TCM1, TCM2 set, and note that this unit lacks the -S magnet for CMSE or DMSE sensors. If human safety relies on the load staying up, add an independent mechanical safety measure as well.
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 SAILB160X700 FAQ
At 0.5MPa operating pressure, this 160mm bore cylinder provides 10053N of pull force and 14074N of push force. At 0.7MPa, the push force increases to 14074N.
The lock is spring-applied and air-released, engaging only when the piston reaches the retracted stroke end in the back cover. It provides a static hold after the rod stops, not a dynamic brake. You can unlock it automatically by supplying air to the release port or by using the manual release lever.
Related AirTAC Lock & Standard Cylinders
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