This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X200-20S, 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 SIJ125X200-20S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X200-20S 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 SAIJ125X200-20S, 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 → SAIJ125X200-20S
- 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 SIJ125X200-20S
The AirTAC SIJ125X200-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 200 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 180-200 mm end position. The direct replacement is the SAIJ125X200-20S, sharing the same interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting footprint for direct reuse of FA, LB, and TC brackets, and upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-20S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X200-20S |
| 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 SAIJ125X200-20S 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 SAIJ125X200-20S 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 SIJ125X200-20S
| 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 SIJ125X200-20S Is Used
Press Fit Tuning
Allows operators to dial in the exact 180-200 mm extend position for seating bearings without machining custom spacers.
Variable Package Divert
Adjusts the extend stop on the fly to accommodate different carton widths on a sorting line without swapping cylinders.
Pallet Positioning
Provides a field-adjustable end stop for aligning pallets of varying heights prior to stretch wrapping.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-20S with the SAIJ125X200-20S
To replace the discontinued SIJ125X200-20S, order the direct replacement SAIJ125X200-20S, matching the 125 mm bore, 200 mm nominal stroke, 20 mm adjust window, G1/2 port, and -S magnet. Choose the 20 mm adjust window if your application requires fine-tuning the extend stroke down to 180 mm on-site. The SAIJ reuses standard ISO 15552 FA, LB, and TC mountings. Because the stroke is 200 mm, ensure the rod-end load adheres to allowable side-load limits to prevent uneven seal wear. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAIJ accepts current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X200-20S
- ✓ 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 SIJ125X200-20S FAQ
Yes, the AirTAC SIJ125X200-20S is discontinued. The direct replacement is the SAIJ125X200-20S. It shares the same ISO 15552 interface, 125 mm bore, 200 mm stroke, 20 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 20 mm adjust window, allowing you to trim the extend stroke from 200 mm down to 180 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X200-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X200-20S replacement — usually within 7-8 hours.