Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 800mm stroke and a built-in spring-applied, air-released mechanical lock in the front cover — it holds the load at the extended (rod-out) stroke end even when air is lost.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Lock positionFront 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 SAILF Front Locking Pneumatic Cylinder SAILF80X800S
The AirTAC SAILF80X800-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released mechanical lock housed in the front cover. This mechanism engages automatically to hold the rod securely at the extended stroke end whenever the release air is cut, maintaining the load without live pressure. In the 80mm bore class, it delivers 4523N of push force at 0.9 MPa, supported by a 25mm carbon steel rod and a 3/8 PT port.
Because this unit includes a magnet (-S), it is fully compatible with AirTAC CMSE reed and DMSE solid-state sensors for end-of-stroke verification. The variable air cushion at the front lock end is 22.5mm, intentionally shorter than the 36mm cushion on the free end to accommodate the locking hardware. The lock is a static holding device that engages after the piston stops, not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 800 mm |
| Acting type | Double acting, with lock |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released (front 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 / 22.5 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 extended (rod-out) 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 front-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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SAILF Front Locking Pneumatic Cylinder SAILF80X800S Is Used
Vertical Lift Holding
Maintains an elevated load at the extended stroke end during a power loss, utilizing the front mechanical lock to prevent sudden drops.
Extended Push Stop
Holds a pushed actuator securely in the rod-out position to keep a conveyor lane open or a diverter arm locked in place without continuous air supply.
Safety Gate Lock
Keeps a protective barrier extended and locked until the release air is deliberately supplied, ensuring the gate remains closed during hazardous operations.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S the Right Lock Cylinder?
Choose this 80mm bore to secure loads requiring up to 4523N of push force at the extended position. If your application needs less force, the 63mm bore provides 2805N at 0.9 MPa; if you need more, the 100mm bore offers 7068N. Select this SAILF model specifically when the load must be held at the rod-out position; choose SAILB instead for holding retracted loads. If the mechanism must stop and clamp at an arbitrary mid-stroke point rather than the end, the BSAI clamp-lock cylinder is the correct choice.
Remember that the lock holds statically at the stroke end without live air, unlike the air cushion which only decelerates near the terminal. Avoid using a fast-exhaust valve with this cylinder; an independent-exhaust solenoid valve is required because back-pressure on the locker side can unintentionally release the lock. For safety-critical lifting applications, add an independent mechanical safety measure. At 800mm stroke, use a linear guide to prevent rod side-load damage. Replacement requires matching the 80mm bore, 800mm stroke, front locker position, PT port, and magnet.
Quick checklist
- ✓ Hold needed at the extended (rod-out) end?
- ✓ Or lock anywhere → use BSAI
- ✓ Independent-exhaust valve fitted
- ✓ Port/thread type (PT/G)
- ✓ Extra safety measure for people
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X800S FAQ
At 0.9 MPa, the 80mm bore provides a push force of 4523N and a pull force of 2268N. The maximum push force is 513 kgf at 1.0 MPa.
The lock is spring-applied and air-released, holding the rod statically at the extended stroke end when air pressure is removed. It can be unlocked automatically by supplying release air or manually via the lever, but it cannot clamp at mid-stroke.
Related AirTAC Lock & Standard Cylinders
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