Airtac SILF Front Locking Air Cylinder SILF63X400-S
Genuine AirTAC ø63 mm end-lock iso 15552 cylinder, order code SILF63X400-S from the SIL63 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke400 mm
- MountingBasic (no mounting)
- VersionFront lock (F) · S · PT
- Bore sizeØ63 mm
- Stock strokes10 – 1000 mm
- Catalog standard strokeup to 1500 mm (longer on request)
- 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 SILF Front Locking Air Cylinder SILF63X400-S
For 400 mm of travel, the SILF63X400-S keeps the same 63 mm ISO 15552 bore and the same output as its shorter siblings: 1559 N push / 1402 N pull at 0.5 MPa, 2182 N / 1962 N at 0.7 MPa. The end lock lives in the front (rod-end) cover and mechanically holds the piston while the lock-side port is vented, releasing automatically when air returns or manually via the lever. The S option builds a magnet into the piston so position sensors can track the rod across the whole 400 mm, and adjustable air cushions soften the stroke ends.
AirTAC discontinued the SILF/SILB series, so this code is supplied as the current SAILF63X400S with the same code after the prefix; the data on this page is that of the replacement unit you receive. It carries 3/8" PT ports, an M16x1.5 thread on a 20 mm rod, 0.15-1.0 MPa operation (proof 1.5 MPa), -20 to +70 C and 30-800 mm/s on 40 um filtered air.
Airtac SILF Front Locking Air Cylinder SILF63X400-S Technical Specifications
| Order code | SILF63X400-S |
|---|---|
| Product | Ø63 mm end-lock ISO 15552 cylinder |
| Stroke | 400 mm |
| Mounting | Basic (no mounting) |
| Version | Front lock (F) · S · PT |
| Bore size | Ø63 mm |
|---|---|
| Stock strokes | 10 – 1000 mm |
| Catalog standard stroke | up to 1500 mm (longer on request) |
| Acting type | Double acting, with end lock |
| Lock position | Front cover (F) |
| Lock release | Automatic (air on the lock-side port) or manual lever |
| Port size | 3/8" (PT standard) |
| Piston rod / rod thread | Ø20 mm / M16×1.5 |
| Fluid | Air (filtered by 40 µm element) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable air cushions |
Source: AirTAC Products Catalog 2026A (PDF01-P0376/P0377), SAIL specifications and ordering code; body as SAI. The SILF/SILB series is discontinued; these are the SAILF/SAILB specifications.
How to choose
At 400 mm this is one of the longer catalog strokes in the bore, and rigidity becomes the deciding option choice. The blank body of this code leaves mounting to you; the FA front flange holds a long cylinder firmly for straight-line loads, while the TC center trunnion or FTC front trunnion supports it when the load swings in an arc.
Also confirm the port thread: blank means 3/8" PT, the G option means BSPP. Keep the trailing S if sensors will read piston position; a code without S carries no magnet. The F suffix fixes the lock at the front cover, and although SILB codes exist for a rear-cover lock, this bore is offered with front locks only.
Applications
Long-reach rack pusher
400 mm of travel reaches deep into storage lanes, and push force stays at 1559 N at 0.5 MPa because the bore, not the stroke, sets the output.
Diverter across a wide belt
The long stroke crosses a broad conveyor, while the piston magnet gives sensors a position signal at both ends of the 400 mm divert.
Deep eject on a forming press
Adjustable air cushions decelerate a 400 mm eject near the end of travel, and the front lock keeps the ejector advanced during a power or air loss.
FAQ
What figures define the SILF63X400-S?
Stroke 400 mm, bore 63 mm, rod 20 mm with M16x1.5 thread, ports 3/8" PT. Push 1559 N and pull 1402 N at 0.5 MPa; 2182 N and 1962 N at 0.7 MPa. Operating pressure 0.15-1.0 MPa (proof 1.5 MPa), temperature -20 to +70 C, speed 30-800 mm/s, adjustable air cushions, front-cover end lock with air and lever release, magnet for position sensors.
Which cylinder arrives if I order the SILF63X400-S?
The SAILF63X400S. AirTAC discontinued the SILF/SILB series and supplies each code as its SAILF/SAILB replacement with the same code after the prefix. That replacement is a current-production cylinder, and all specifications on this page - force, stroke, ports, lock behavior - are those of the unit the buyer receives.