This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X100-30, 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 SIJ125X100-30
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X100-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X100-30
- 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 SIJ125X100-30
The AirTAC SIJ125X100-30 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and superseded by the direct replacement SAIJ125X100-30. It features a 125 mm bore, G1/2 port, and an external stop screw that lets you trim the extend stroke by up to 30 mm on-site (yielding a usable 70-100 mm extend). The nominal 100 mm stroke represents the maximum extension before trimming. Because this SKU lacks a -S suffix, it has no magnet and cannot accept a magnetic switch.
The SAIJ replacement retains the exact interface, force, and adjust window, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Remember the stop screw sets end position only; it is not a load lock, and a plain cylinder drifts on air loss.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X100-30 |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125X100-30 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 SAIJ125X100-30 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 SIJ125X100-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SIJ125X100-30 Is Used
Press Fit Tuning
Allows on-site extend stroke adjustment from 100 mm down to 70 mm to dial in exact press-fit depths for large bearings without swapping cylinders.
Variable Format Flaps
Adjusts the extend endpoint on packaging lines to accommodate different carton depths on the fly, utilizing the 30 mm stop screw window.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X100-30 with the SAIJ125X100-30
To replace the discontinued SIJ125X100-30, order the direct replacement SAIJ125X100-30, which preserves the 100 mm nominal stroke, 30 mm adjust window, G1/2 port, and ISO 15552 mounting. Select the 30 mm adjust window if your application needs field stroke tuning between 70 and 100 mm. Mounting attachments (FA, LB, TC) reuse the standard ISO 15552 interface. For strokes at or above 300 mm, verify your side-load limits to prevent guide wear. Because this specific SKU lacks the -S magnet, you cannot mount legacy CS1-B or DS1-B sensors; if sensing is required, select an -S designated SAIJ model.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X100-30
- ✓ 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 SIJ125X100-30 FAQ
Yes, the SIJ125X100-30 is discontinued. The direct replacement is the SAIJ125X100-30, which shares the same ISO 15552 interface, 125 mm bore, 100 mm stroke, 30 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 30 mm adjust window, allowing the extend stroke to be shortened from the 100 mm nominal maximum down to 70 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X100-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X100-30 replacement — usually within 7-8 hours.