Airtac SILF Front Locking Air Cylinder SILF125X100-S
Genuine AirTAC ø125 mm end-lock iso 15552 cylinder, order code SILF125X100-S from the SIL125 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Stroke100 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 SILF125X100-S
The AirTAC SILF125X100-S is a 100 mm stroke, double-acting ISO 15552 cylinder with a mechanical end lock in the front (rod-end) cover. AirTAC has discontinued the SILF/SILB series, so this code ships as SAILF125X100S, and every figure on this page describes that current unit. The 125 mm bore pushes 6136 N at 0.5 MPa and 8590 N at 0.7 MPa; pull drops to 5734 N and 8027 N because the Dia 32 mm rod removes area.
The S suffix puts a magnet in the piston for position sensing, and the F in the code fixes the lock at the front cover. While the lock-side port is exhausted the piston is held even if supply air is lost; air on that port releases the lock automatically, and a lever releases it by hand. The body carries 1/2" PT ports, an M27x2 rod thread and adjustable air cushions, running 0.15-1.0 MPa (proof 1.5 MPa) at 30-800 mm/s from -20 to +70 C on air filtered by a 40 um element.
Airtac SILF Front Locking Air Cylinder SILF125X100-S Technical Specifications
| Order code | SILF125X100-S |
|---|---|
| Product | Ø125 mm end-lock ISO 15552 cylinder |
| Stroke | 100 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
Fix the travel first: 100 mm is the short end of this bore's listed range, so if your machine needs more travel step up to SILF125X150-S or SILF125X200-S rather than stretching actuation elsewhere. A longer stroke adds body length and air consumption but never adds force, since output depends only on bore and pressure.
This code is the basic body with PT ports and the S magnet. Choose SILB125X100-S if the load must be held at the rear cover instead, drop the S for a non-sensing cylinder, or add a mounting code (LB foot, FA front flange, CB double clevis, TC or FTC trunnion) if the body's own mounting holes are not enough; specify G if your piping uses G (BSPP) instead of PT.
Applications
Fail-safe hold-down on a press station
The front-cover lock keeps the rod retracted when the lock-side port is exhausted, so a clamping or pressing tool stays down through a supply-air loss and lifts only when air returns or the lever is used.
Conveyor stop and gate actuation
A 100 mm throw is the right length for stop blades and short gate swings on a conveyor line, and the 6136 N push at 0.5 MPa moves heavy product without oversizing the bore.
Position-verified clamping
The built-in magnet lets position switches confirm clamp-open and clamp-closed at the front cover, turning a purely mechanical lock cycle into a monitored step of the machine sequence.
FAQ
What are the key figures of the SILF125X100-S?
You receive the current SAILF125X100S: 125 mm bore, 100 mm stroke, front-cover end lock, built-in magnet, basic body, 1/2" PT ports, M27x2 rod thread, adjustable cushions, 0.15-1.0 MPa working pressure (1.5 MPa proof), 30-800 mm/s speed, -20 to +70 C, 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push and 8027 N pull at 0.7 MPa.
How is the front lock released on this cylinder?
Two ways: automatically, by applying air to the lock-side port, or manually, with the release lever. The catalog lists no holding-force figure for the lock, so confirm any load-holding requirement against the datasheet before sizing.