This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X200-100S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X200-100S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X200-100S
- 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S
The AirTAC SIJ125X200-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable 100-200 mm window from the 200 mm nominal maximum. The direct replacement is the SAIJ125X200-100S, matching the interface, force, and mounting.
Upgrading to the SAIJ family retains the genuine ISO 15552 dimensions but adds an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The stop screw sets the end position but is not a load lock; for held loads use an external rod lock or the SAIL/BSAI variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X200-100S |
| Bore size | Ø125 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ125X200-100S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAIJ125X200-100S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S Is Used
Press Fit Tuning
Adjusting the extend stroke by up to 100 mm on-site allows precise press-fit depth without machining custom spacers.
Variable Length Diverter
Trimming the extend stroke from 200 mm down to 100 mm accommodates changing package sizes on a sorting line.
Adjustable End Stop
Setting a specific end position for varying pallet widths using the external stop screw instead of external mechanical stops.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S with the SAIJ125X200-100S
To replace the discontinued SIJ125X200-100S, specify the direct replacement SAIJ125X200-100S, keeping the 200 mm nominal stroke, 100 mm adjust window, and -S magnet. Select the adjust window based on your maximum needed extend trim; here you can shorten the stroke by up to 100 mm on-site. Mounting options include Basic, FA, LB, and TC. Because the stroke is 200 mm (under 300 mm), side-load concerns are minimal, but ensure standard load alignment. Note the external stop sets end position and does not hold load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X200-100S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-100S FAQ
Yes, the SIJ125X200-100S is discontinued. The direct replacement is the SAIJ125X200-100S, which shares the same ISO 15552 interface, 125 mm bore, 200 mm stroke, 100 mm adjust window, G1/2 port, and mounting options.
The 125 mm bore has a 100 mm adjust window (usable extend 100-200 mm). The G1/2 port and 32 mm rod handle speeds of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X200-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X200-100S replacement — usually within 7-8 hours.