This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X700-30, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 700mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X700-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X700-30
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30
The AirTAC SIJ50X700-30 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, discontinued and replaced by the direct replacement SAIJ50X700-30. It has a 50mm bore, G1/4 port, and 700mm nominal stroke. The external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable extend range of 670-700mm. This stop sets the end position; it is not a load lock.
The SAIJ replacement retains the interface, port, and mounting, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This non-magnetic SKU cannot take a switch. For 700mm strokes, use external guides to prevent rod bending.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X700-30 |
| Bore size | Ø50 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ50X700-30 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAIJ50X700-30 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 Is Used
Variable Depth Forming
Needs field stroke tuning to alter the extend end-position by up to 30mm for material thickness changes without swapping the cylinder.
Adjustable Transfer Stops
Requires on-site stroke trimming to set package push-off distances precisely, accommodating varied product lengths on the line.
Tiered Pallet Positioning
Demands adjustable extend endpoints to index loads at varying heights, using the stop screw to shorten the 700mm stroke as needed.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 with the SAIJ50X700-30
To replace the discontinued SIJ50X700-30, order the direct replacement SAIJ50X700-30, keeping the 50mm bore, 700mm stroke, and 30mm adjust window. Choose the 30mm adjust window if you need field tuning of the extend end-position; for fixed stops, a standard SAI cylinder suffices. Mounting interfaces FA, LB, and TC are reusable. This SKU lacks the -S magnet and cannot support legacy CS1-B/DS1-B sensors. Because the 700mm stroke exceeds 300mm, account for side-load and rod-bending by adding external guides. A plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X700-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X700-30 FAQ
Yes, the SIJ50X700-30 is discontinued. The direct replacement is the SAIJ50X700-30, offering the same ISO 15552 interface, 50mm bore, 700mm stroke, 30mm adjust window, and G1/4 port.
The external stop screw window is 30mm, allowing you to trim the extend stroke from 700mm down to 670mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X700-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X700-30 replacement — usually within 7-8 hours.