This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X700-75, 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 SIJ125X700-75
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75 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 SAIJ125X700-75, 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 → SAIJ125X700-75
- 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 SIJ125X700-75
The AirTAC SIJ125X700-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 700 mm maximum stroke. An external stop screw lets you trim the extend stroke on-site by up to 75 mm, yielding a usable 625-700 mm extension window. The direct replacement is the SAIJ125X700-75, matching the bore, stroke, force, and mounting interface.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The external stop sets the end position but is not a load lock; the cylinder drifts on air loss. For held loads, use an external rod lock or the SAIL/BSAI variants. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X700-75 |
| 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 SAIJ125X700-75 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 SAIJ125X700-75 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 SIJ125X700-75
| 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 SIJ125X700-75 Is Used
Press Tonnage Calibration
Needs field stroke tuning to set precise lower-die contact points across varying material thicknesses without re-mounting the actuator.
Package Divert Positioning
Requires on-site extend trimming to adjust the pusher stroke length for different carton widths on a sorting line.
Palletizing Stop Gates
Demands adjustable end positions to accommodate varying pallet depths while using the full 700 mm stroke for maximum reach.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X700-75 with the SAIJ125X700-75
To replace the discontinued SIJ125X700-75, order the SAIJ125X700-75 direct, which preserves the ISO 15552 mounting dimensions, G1/2 port, and 75 mm adjust window. Choose the 75 mm adjust window if you need to fine-tune the extend stroke between 625 and 700 mm on-site. Reuse FA, LB, or TC mounts directly. Because the 700 mm stroke exceeds 300 mm, ensure external guides are used to prevent rod bending and manage side loads. Note that this non-magnetic SKU cannot support position sensing.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X700-75
- ✓ 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 SIJ125X700-75 FAQ
Yes, the SIJ125X700-75 is discontinued. The direct replacement is the SAIJ125X700-75. It shares the identical ISO 15552 interface, 125 mm bore, 700 mm stroke, 75 mm adjust window, G1/2 port, and mounting options, while adding an upgraded piston seal.
The double-acting double-rod cylinder pushes 6136 N and pulls 5734 N at 0.5 MPa, pushes 8590 N at 0.7 MPa, and 11045 N at 0.9 MPa, with a theoretical max of 1251 kgf at 1.0 MPa. The external stop screw provides a 75 mm adjust window, allowing the 700 mm extend stroke to be shortened to 625 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X700-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X700-75 replacement — usually within 7-8 hours.