Airtac SAILB Rear Lock Cylinder SAILB100X1000
The AirTAC Airtac SAILB Rear Lock Cylinder SAILB100X1000 is a genuine double-acting ISO 15552 profile cylinder with a Ø100mm 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.
- BoreØ100 mm
- Stroke1000 mm
- Port sizeG1/2
- Lock positionBack cover
- Rod threadM20×1.5
- UnlockAir + manual
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAILB Rear Lock Cylinder SAILB100X1000
The AirTAC SAILB100X1000 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock in the back cover. This built-in lock engages automatically to hold the rod securely at the retracted stroke end whenever the release air is cut, maintaining the load without live pressure. The extruded aluminum barrel design provides dimensional interchangeability with ISO 15552 mounting interfaces, delivering a robust 5497N push force at 0.7MPa.
The lock is a static holding device, not a dynamic brake for a moving rod. To accommodate the locking hardware, the variable air cushion at the locker end is shorter at 24mm compared to 36mm on the free end. The standard carbon steel rod and PT tapered ports ensure reliable operation, and unlocking is achieved either automatically via air or manually using the release lever.
Airtac SAILB Rear Lock Cylinder SAILB100X1000 Technical Specifications
| Model | Airtac SAILB Rear Lock Cylinder SAILB100X1000 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø100 mm |
| Stroke | 1000 mm |
| Acting type | Double acting, with lock |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable (36 mm free end / 24 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SAILB100X1000 Is Used
Vertical Lift Safety
Holds heavy vertical loads securely at the retracted stroke end during power loss, preventing sudden drops on lifting machinery.
Conveyor Pallet Arrest
Locks the rod in the retracted position to safely hold a conveyor stopper gate open without requiring continuous air pressure.
Machine Guard Hold
Maintains a safety guard in the closed position by locking the cylinder at the back stroke end until a controlled air release signal is sent.
Is the Airtac SAILB Rear Lock Cylinder SAILB100X1000 the Right Lock Cylinder?
Choose this 100mm bore when substantial thrust is required, offering 5497N push and 3681N pull at 0.7MPa. If your application requires less force, stepping down to an 80mm bore provides 3518N push, while a 125mm bore yields 8590N push for heavier loads. Select the SAILB configuration to secure loads at the retracted position; if you need the rod held extended, choose SAILF instead. For applications requiring the load to be clamped at an arbitrary mid-stroke point, select the BSAI clamp-lock cylinder instead of this stroke-end-only lock.
Because this 1000mm stroke exceeds the 1500mm standard maximum, it is a non-standard stroke requiring careful attention to side-load guidance; use a proper guide rail to prevent rod binding. Remember that the lock holds statically after the cylinder stops. Avoid using fast-exhaust valves, as back-pressure on the locker side can unintentionally release the lock; use an independent-exhaust solenoid valve. If human safety depends on the load remaining suspended, add an independent 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 SAILB100X1000 FAQ
The 100mm bore provides a theoretical push force of 3927N at 0.5MPa and 5497N at 0.7MPa. The pull force is 3681N at 0.7MPa due to the 25mm carbon steel rod.
The lock is spring-applied and air-released, holding the rod only at the retracted stroke end in the back cover. It engages statically after the piston stops. It is not a mid-stroke clamp (use BSAI for that) or a dynamic brake. Unlock it automatically via air or manually via the lever.
Related AirTAC Lock & Standard Cylinders
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