Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X700S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X700S is a genuine double-acting ISO 15552 profile cylinder with a Ø80mm bore, 700mm 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
- Stroke700 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 SAILF80X700S
The AirTAC SAILF80X700-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. A spring-applied, air-released lock engages when the piston reaches the extended stroke end, securely holding the load without requiring live pressure. Delivering 4523N of push force at 0.9 MPa, it uses a 25mm carbon steel rod and includes a piston magnet for solid-state DMSE or reed CMSE sensors.
This model features PT tapered port threads and a 3/8 air supply. The variable air cushion at the locker end measures 22.5mm, intentionally shorter than the 36mm cushion on the free end to accommodate the locking mechanism. The lock automatically releases by supplying air to the release port, or manually via the lever.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X700S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X700S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAILF80X700S Is Used
Extended Lift Hold
Maintains a vertical lift securely at the fully extended stroke end during compressed air failure, preventing sudden drops.
Flow Control Gate
Locks a diverter gate open at the rod-out position to keep production lines running safely during pressure loss.
Safety Barrier
Holds a protective barrier extended into the working area, ensuring the guard remains in place without continuous air supply.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF80X700S the Right Lock Cylinder?
Choose this 80mm bore when an application requires 4523N of thrust at 0.9 MPa to move a load, but demands the rod stays fixed at the extended position during a power loss. If your mechanism only needs 2805N at 0.7 MPa, step down to a 63mm bore; if you require 7068N, step up to a 100mm bore. Select this SAILF variant specifically because the load must be secured at the rod-out stroke end. If your mechanism requires clamping at an arbitrary mid-stroke point, select the BSAI clamp-lock cylinder instead.
Because the stroke is 700mm, fitting a side-load guide is recommended to prevent rod bending and premature seal wear. Remember the lock is a static holding device that engages after the cylinder stops, not a dynamic brake. Never use a fast-exhaust valve with this cylinder; always use an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For human-safety critical suspended loads, add an independent mechanical safety measure. Replacement requires matching the 80mm bore, 700mm stroke, front locker position, PT port threads, and the -S 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 SAILF80X700S FAQ
The 80mm bore provides 2513N of push force at 0.5 MPa, 3518N at 0.7 MPa, and 4523N at 0.9 MPa. The pull force is 2268N at 0.5 MPa.
The spring-applied lock engages automatically when the piston reaches the extended stroke end, holding the load without live air. It releases by supplying air to the release port or manually via the lever. It is a static hold only and does not clamp mid-stroke.
Related AirTAC Lock & Standard Cylinders
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