Airtac SILF Front Locking Air Cylinder SILF100X275S
Genuine AirTAC ø100 mm end-lock iso 15552 cylinder, order code SILF100X275S from the SIL100 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke275 mm
- MountingBasic (no mounting)
- VersionFront lock (F) · S · PT
- Bore sizeØ100 mm
- Stock strokes25 – 1120 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 SILF100X275S
Ordering the SILF100X275S gets you the current AirTAC SAILF100X275S: the SILF/SILB end-lock series has been discontinued, and every code on this page is supplied as the SAIL replacement with the same characters after the prefix. The figures below therefore describe the SAILF unit you actually receive. It is a double-acting ISO 15552 cylinder with a 100 mm bore, a 25 mm piston rod with an M20x1.5 thread, 1/2 in PT air ports and adjustable air cushions, running on air filtered by a 40 um element between 0.15 and 1.0 MPa (proof 1.5 MPa).
The end lock sits in the front (rod-end) cover: while the lock-side port is exhausted, the piston is held mechanically and the rod stays put if air is lost; air on that port releases it automatically and a hand lever releases it manually. The catalog gives no holding-force figure for the lock. The built-in S magnet lets you fit position sensors on the body, useful for confirming the 275 mm stroke end positions. At 0.5 MPa the bore pushes 3927 N and pulls 3682 N; at 0.7 MPa, 5498 N push and 5154 N pull.
Airtac SILF Front Locking Air Cylinder SILF100X275S Technical Specifications
| Order code | SILF100X275S |
|---|---|
| Product | Ø100 mm end-lock ISO 15552 cylinder |
| Stroke | 275 mm |
| Mounting | Basic (no mounting) |
| Version | Front lock (F) · S · PT |
| Bore size | Ø100 mm |
|---|---|
| Stock strokes | 25 – 1120 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 | 1/2" (PT standard) |
| Piston rod / rod thread | Ø25 mm / M20×1.5 |
| 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
Pick this code when you need 275 mm of travel on a basic-bodied cylinder with built-in sensing. Its closest sibling is SILF100X275, the same cylinder without the S magnet, so if your machine has no sensor rail, order that and save the option. Add G to get G (BSPP) ports instead of the standard 1/2 in PT (SILF100X275SG). Switch to SILB100X275S only if the load must be held at the rear cover rather than the rod end, and to SILF100X275SCA or SILF100X275STC if you need a single clevis or center trunnion instead of the basic mounting holes. Remember that a longer stroke adds body length and air consumption but never force: bore and pressure set the output.
Applications
Vertical press with hold-on-loss
The front-cover lock keeps the rod down when supply air fails, so a 100 mm bore pressing at up to 5498 N at 0.7 MPa cannot creep back during the 275 mm return stroke.
Sensor-verified end positions
The S magnet drives position switches on the body, letting a PLC confirm fully extended and fully retracted over the 275 mm travel before the next cycle starts.
Clamp-and-hold fixtures
Machining and welding fixtures benefit from mechanical front-end locking plus adjustable air cushions, holding parts through 275 mm of controlled approach.
FAQ
What are the key figures of the SILF100X275S?
100 mm bore, 275 mm stroke, double acting with end lock in the front (rod-end) cover, basic mounting, built-in S magnet, 1/2 in PT ports, 25 mm piston rod with M20x1.5 thread, adjustable air cushions, operating pressure 0.15 to 1.0 MPa (proof 1.5 MPa), temperature -20 to +70 C, speed 30 to 800 mm/s. Theoretical force: 3927 N push and 3682 N pull at 0.5 MPa; 5498 N push and 5154 N pull at 0.7 MPa.
The SILF series is listed as discontinued. What do I actually receive?
You receive the current replacement: AirTAC supplies every SILF code as the SAILF series with the same code after the prefix, so SILF100X275S ships as SAILF100X275S. All specifications quoted here are those of that SAILF unit. Older hyphenated codes are the same code, for example SILF100X100-S ships as SAILF100X100S.