This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X700-30S, 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 SIJ125X700-30S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X700-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X700-30S
- 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 SIJ125X700-30S
The AirTAC SIJ125X700-30S 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 30 mm on-site, giving a usable 670-700 mm stroke window from the 700 mm nominal maximum.
As the SIJ line is end-of-life, the direct replacement is the SAIJ125X700-30S, retaining the same ISO 15552 interface, bore, force, adjust window, and mounting. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. 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.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X700-30S |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125X700-30S 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 SAIJ125X700-30S 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 SIJ125X700-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SIJ125X700-30S Is Used
Press Fit Tuning
Final insertion of heavy bearings where the exact 670-700 mm extend endpoint must be dialed in on-site to avoid crushing the housing.
Pallet Stop Adjustment
Actuating a heavy-duty stop gate for varying pallet lengths, using the 30 mm trim to fine-tune the blocking position without moving the rear mount.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-30S with the SAIJ125X700-30S
To replace the discontinued SIJ125X700-30S, order the direct replacement SAIJ125X700-30S, which matches the 125 mm bore, 700 mm stroke, 30 mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 30 mm adjust window if you need on-site end-position tuning between 670 and 700 mm. Reuse FA, LB, or TC mounts directly. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Because the 700 mm stroke is long, ensure external guides to prevent rod bending and manage side loads. The stop screw is an end-position stop, not a lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X700-30S
- ✓ 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 SIJ125X700-30S FAQ
Yes, the SIJ125X700-30S is discontinued. The direct replacement is the SAIJ125X700-30S. It shares the same ISO 15552 interface, 125 mm bore, 700 mm stroke, 30 mm adjust window, G1/2 port, and mounting. The SAIJ family uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 30 mm adjustable window, allowing the extend stroke to be shortened on-site from the 700 mm nominal maximum down to 670 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X700-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X700-30S replacement — usually within 7-8 hours.