This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X275-75, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 275mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X275-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X275-75
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75
The AirTAC SIJ100X275-75 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 75 mm on-site, yielding a usable 200-275 mm stroke from the 275 mm nominal maximum. It features a Ø25 mm rod, M20x1.5 rod thread, 36 mm adjustable cushions, and a fixed G1/2 port.
As the SIJ range is end-of-life, the direct replacement is the SAIJ100X275-75, matching the ISO 15552 interface, force, and mounting. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longer life. This SKU has no -S magnet and cannot take a switch. The stop screw sets end position only; it is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X275-75 |
| Bore size | Ø100 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X275-75 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X275-75 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 Is Used
Press Fit Tuning
Adjustable end-position for press-fit assemblies, trimming the extend stroke by up to 75 mm to accommodate varying pin lengths without re-engineering the fixture.
Variable Pitch Diverter
On-site stroke trimming for conveyor diverters handling mixed product sizes, allowing the 200-275 mm extend window to be set precisely for different carton depths.
Carton Flap Folding
Field-tuned extend stroke for packaging lines running multiple box formats, using the external stop to set exact folding contact points on the fly.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 with the SAIJ100X275-75
To replace the discontinued SIJ100X275-75, order the direct replacement SAIJ100X275-75. Choose the 75 mm adjust window if your extend stroke needs on-site tuning between 200 and 275 mm. Reuse existing FA, LB, or TC ISO 15552 mounts. Because this SKU lacks the -S suffix, it has no magnet and cannot accept legacy CS1-B or DS1-B sensors. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding. The stop screw only sets the end position; for load holding on air loss, use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X275-75
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X275-75 FAQ
Yes, the SIJ100X275-75 is discontinued. The direct replacement is the SAIJ100X275-75, which matches the ISO 15552 interface, 100 mm bore, 275 mm stroke, 75 mm adjust window, G1/2 port, and mounting hardware. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw allows you to trim the extend stroke by up to 75 mm on-site, giving a usable 200-275 mm stroke. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X275-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X275-75 replacement — usually within 7-8 hours.