Airtac SILF Front Locking Air Cylinder SILF125X75S
Genuine AirTAC ø125 mm end-lock iso 15552 cylinder, order code SILF125X75S from the SIL125 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke75 mm
- MountingBasic (no mounting)
- VersionFront lock (F) · S · PT
- Bore sizeØ125 mm
- Stock strokes25 – 1150 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 SILF125X75S
The S in SILF125X75S adds a built-in magnet to a 125 mm bore, double-acting ISO 15552 end-lock cylinder with a 75 mm stroke and the lock in the front (rod-end) cover, so position sensors mounted on the tube can report piston position to your controller. The SILF/SILB series is discontinued: this code ships as the current SAILF125X75S, same code with the new prefix, and the specifications here describe the replacement unit you receive.
Force is set by bore and pressure, so the magnet costs nothing in output: 6136 N push and 5734 N pull at 0.5 MPa, 8590 N and 8027 N at 0.7 MPa. Air enters through 1/2" PT ports, the 32 mm rod carries an M27x2 thread, adjustable air cushions tame each move, and the cylinder works on filtered air at 0.15-1.0 MPa (proof 1.5 MPa) from -20 to +70 C at 30 to 800 mm/s. The lock holds while the lock-side port is exhausted and releases automatically with air or by hand lever.
Airtac SILF Front Locking Air Cylinder SILF125X75S Technical Specifications
| Order code | SILF125X75S |
|---|---|
| Product | Ø125 mm end-lock ISO 15552 cylinder |
| Stroke | 75 mm |
| Mounting | Basic (no mounting) |
| Version | Front lock (F) · S · PT |
| Bore size | Ø125 mm |
|---|---|
| Stock strokes | 25 – 1150 mm |
| Catalog standard stroke | up to 1500 mm (longer on request) |
| Acting type | Double acting, with end lock |
| Lock position | Front cover (F) or rear cover (B) |
| Lock release | Automatic (air on the lock-side port) or manual lever |
| Port size | 1/2" (PT standard) |
| Piston rod / rod thread | Ø32 mm / M27×2 |
| 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
Two decisions separate this code from its neighbours. First, the magnet: the otherwise identical SILF125X75 has no magnet, so choose this S version whenever reed or Hall-effect sensors must confirm position. Second, the lock end: F keeps the lock in the front (rod-end) cover; if the load must be caught at the rear cover, order SILB125X75S instead. The basic body mounts on its own end-cover holes; LB foot, FA front flange, CB double clevis, TC center trunnion and FTC front trunnion versions are ordered by appending the mounting code.
Applications
Position feedback to the PLC
The built-in magnet lets switches on the tube confirm both the retracted state and the front-held position, so the controller always knows where the rod stands.
Diverters and pushers with verification
A 75 mm push of up to 8590 N at 0.7 MPa moves cartons on or off the line, and the magnet signal verifies that every stroke completed before the next cycle starts.
Bin and drawer ejection with counting
Sensor feedback on each 75 mm stroke lets the controller tally picks or rejects, while the front lock holds the rod firm whenever air is lost from the lock-side port.
FAQ
What are the key figures of the SILF125X75S?
125 mm bore, 75 mm stroke, double acting with an end lock in the front cover and a built-in magnet for position sensors. Push 6136 N, pull 5734 N at 0.5 MPa; 8590 N push, 8027 N pull at 0.7 MPa. Ports 1/2" PT, rod thread M27x2, operating pressure 0.15-1.0 MPa (proof 1.5 MPa), temperature -20 to +70 C, speed 30-800 mm/s, adjustable air cushions.
Is the SILF125X75S still made by AirTAC?
Not as an SILF: the series is discontinued and this code ships as the current SAILF125X75S, the same ordering code with the new SAIL prefix. All figures on this page are the specifications of that replacement unit, so you order the familiar code and receive the current series.