This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X200-10, 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.

The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X200-10 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 SAIJ125X200-10, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ125X200-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 200 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, giving a usable extend range of 190-200 mm. The direct replacement is the SAIJ125X200-10, matching the interface, bore, stroke, force, port, and mounting.
The SAIJ successor retains the ISO 15552 mounting interface for direct reuse of your 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. This non-magnet SKU cannot accept a sensor switch. Note that 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.
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X200-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X200-10 |
| 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 SAIJ125X200-10 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAIJ125X200-10 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| 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).
Final insertion of bearings or pins where a 10 mm external stop trims the extend stroke on-site to dial in exact pressing depth without re-engineering the fixture.
Adjusting the extend endpoint on a packaging line to accommodate minor carton height variances, using the stop screw to fine-tune the fold position dynamically.
Heavy-duty material handling where the 10 mm window sets the precise end position before the 40 mm adjustable cushion decelerates the 125 mm bore load.
To replace the discontinued SIJ125X200-10, order the direct replacement SAIJ125X200-10, which preserves the 125 mm bore, 200 mm stroke, 10 mm adjust window, G1/2 port, and 32 mm rod. The 10 mm adjust window is ideal if you only need micro-trimming of the extend stroke (190-200 mm); for larger trims, select a model with a wider window. Reuse your existing FA, LB, or TC ISO 15552 mounts. Because this SKU lacks the -S suffix, it cannot take a magnetic switch; add -S if you need legacy CS1-B/DS1-B sensor accuracy. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
Yes, the SIJ125X200-10 is discontinued. The direct replacement is the SAIJ125X200-10, which matches the 125 mm bore, 200 mm stroke, 10 mm adjust window, G1/2 port, and ISO 15552 mounting interface.
The external stop screw provides a 10 mm adjust window, allowing you to trim the extend stroke from 200 mm down to 190 mm on-site. The stop sets end position but is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X200-10 replacement — usually within 7-8 hours.