Airtac SAILB Rear Lock Cylinder SAILB200X600
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB200X600 is a genuine double-acting ISO 15552 profile cylinder with a Ø200mm bore, 600mm 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.
- BoreØ200 mm
- Stroke600 mm
- Port sizeG3/4
- Lock positionBack cover
- Rod threadM36×2
- UnlockAir + manual
About the Airtac SAILB Rear Lock Cylinder SAILB200X600
The AirTAC SAILB200X600 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the back cover. This lock engages when the piston reaches the retracted stroke end, holding heavy loads safely in place without requiring continuous live air pressure. Delivering a robust 15080 N pull force at 0.5 MPa, it is built with a carbon steel rod and a 3/4 PT tapered port for high-flow pneumatic demand.
Because the lock occupies one end cover, the variable air cushion on the locker side is shorter than the free end, measuring 28 mm versus 50 mm. The lock releases automatically via air supply to the release port or manually via a lever. For position sensing, adding a -S magnet enables tracking with AirTAC CMSE reed or DMSE solid-state sensors.
Airtac SAILB Rear Lock Cylinder SAILB200X600 Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB200X600 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø200 mm |
| Stroke | 600 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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 SAILB200X600 Is Used
Vertical Lift Safety
Secures heavy elevated platforms instantly at the retracted stroke end during a power loss, preventing sudden drops.
Press Hold Position
Maintains tremendous clamping force on large fabricated components at the rod-in terminal without consuming continuous air.
Heavy Gate Control
Locks massive industrial safety gates securely in the closed position until the release air is actively supplied.
Is the Airtac SAILB Rear Lock Cylinder SAILB200X600 the Right Lock Cylinder?
Choose this 200 mm bore when 160 mm (9425 N pull at 0.5 MPa) is insufficient for your vertical load requirements. Select the SAILB configuration when the machinery must secure the load at the rod-in retracted position; choose SAILF instead if the extended rod-out end must be held. If your application requires clamping at an arbitrary mid-stroke point rather than a stroke-end hold, select the BSAI clamp-lock cylinder instead.
The SAIL 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 with this cylinder, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve. For safety-critical lifting applications, always add an independent safety measure. With a 600 mm stroke, use a side-load guide to prevent rod deflection. Replacement matches require 200 mm bore, 600 mm stroke, back locker position, 3/4 PT port, and standard mounting.
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 SAILB200X600 FAQ
At 0.5 MPa it provides 15708 N push and 15080 N pull. At 0.7 MPa the push is 21991 N, and the maximum push is 28274 N at 0.9 MPa.
The spring-applied lock engages automatically when the rod reaches the retracted stroke end in the back cover. It is a static hold, not a mid-stroke clamp or dynamic brake. It unlocks via air supply to the release port or a manual lever.
Related AirTAC Lock & Standard Cylinders
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