Airtac SAILB Rear Lock Cylinder SAILB160X150
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB160X150 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 150mm 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
- Stroke150 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB160X150
The AirTAC SAILB160X150 is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the back cover. Driven by a 40mm carbon steel rod, it generates 10053N of push force at 0.5MPa and securely holds the load at the retracted stroke end. The lock is spring-applied and air-released, meaning it engages automatically upon pressure loss to maintain position without live air.
This 160mm bore unit features a 3/4 PT tapered port and operates at speeds between 30-500mm/s. The variable air cushion at the locker end is notably shorter at 28mm compared to the free end's 50mm cushion. For position sensing, adding a -S magnet enables compatibility with AirTAC CMSE reed and DMSE solid-state sensors.
Airtac SAILB Rear Lock Cylinder SAILB160X150 Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB160X150 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 150 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 SAILB160X150 Is Used
Heavy Lift Holding
Secures elevated heavy machinery platens in the retracted position instantly if air pressure drops, preventing uncontrolled falls.
Safety Gate Lock
Keeps large industrial safety gates firmly closed and locked at the stroke end during power loss events.
Press Clamping
Holds heavy workpieces at the retracted terminal during automated assembly pauses without consuming compressed air.
Is the Airtac SAILB Rear Lock Cylinder SAILB160X150 the Right Lock Cylinder?
Choose this 160mm bore when 100mm (5497N at 0.5MPa) lacks the power to move your load, or step down if 125mm (8590N) is sufficient. Select SAILB to hold the rod in the retracted position, and SAILF if you need it held extended. If your application requires clamping at an arbitrary mid-stroke point rather than the stroke end, select the BSAI clamp-lock cylinder instead.
Remember that this lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve. Always add an independent safety measure if human safety depends on the load staying up. Replacement requires matching the 160mm bore, 150mm stroke, back locker position, 3/4 PT port, 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 SAILB160X150 FAQ
At 0.5MPa, this 160mm bore cylinder provides 10053N of push force and 9425N of pull force. At 0.7MPa, the push force increases to 14074N.
The lock is spring-applied and air-released, holding the rod securely at the retracted stroke end when air is cut off. It is a static hold that engages after stopping, not a mid-stroke clamp. Unlocking is done automatically via air supply or manually via a lever.
Related AirTAC Lock & Standard Cylinders
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