Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X450S
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X450S is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 450mm 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.
- BoreØ160 mm
- Stroke450 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- 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 SAILF160X450S
The AirTAC SAILF160X450-S is a double-acting ISO 15552 profile cylinder featuring a built-in mechanical lock in the front cover. Because the lock is spring-applied and air-released, it automatically engages a lock pin into the rod when the piston reaches the extended stroke end. This guarantees the load is held securely without relying on live air pressure. In this 160mm bore class, the cylinder generates a substantial 14074N of push force at 0.7 MPa, utilizing a robust 40mm carbon steel rod and a 3/4 PT port.
This model includes a magnetic piston (-S) for direct mounting of CMSE reed or DMSE electronic solid-state sensors. The variable air cushion at the front lock end is noticeably shorter (28mm) compared to the free end (50mm) to accommodate the locking mechanism. Remember that this lock provides static holding after the cylinder stops; it is not a dynamic brake for a moving rod.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X450S Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X450S |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 450 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 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 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 (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 SAILF Front Locking Pneumatic Cylinder SAILF160X450S Is Used
Overhead Lift Hold
Secures vertical lifting platforms safely in the extended position during power loss or emergency stops.
Heavy Duty Clamp
Maintains high-force clamping pressure on large fabricated parts at the extended stroke end without continuous air consumption.
Safety Gate Lock
Keeps heavy industrial safety gates open and locked at full extension until the release air is actively supplied.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X450S the Right Lock Cylinder?
Step down to a 125mm bore if your application only requires 8590N push at 0.7 MPa, but retain the 160mm size for heavy loads up to 18095N at 0.9 MPa. Choose this SAILF configuration when the load must be held at the extended rod-out position; select a SAILB variant if the holding requirement is at the retracted stroke end. If your machine needs to lock at an arbitrary mid-stroke point rather than a stroke terminal, the BSAI clamp-lock cylinder is the correct alternative.
For safe operation, never use a fast-exhaust valve with this lock cylinder; always use an independent-exhaust solenoid valve because back-pressure on the locker side can inadvertently release the lock. The lock holds the load statically only at the stroke end, so if human safety depends on the load staying extended, add an independent safety measure. At 450mm stroke, use a guide rail to prevent side-load wear on the 40mm rod. Replacement requires matching the 160mm bore, 450mm stroke, front locker position, 3/4 PT port, and ISO 15552 mounting interface.
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 SAILF160X450S FAQ
At 0.7 MPa operating pressure, the 160mm bore provides 14074N of push force and 9425N of pull force. It can deliver a maximum push of 18095N at 0.9 MPa.
The lock is spring-applied and air-released, engaging a pin into the rod only when the piston reaches the extended stroke end. It unlocks automatically by supplying air to the release port, or manually via the release lever.
Related AirTAC Lock & Standard Cylinders
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