This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X75-50, 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 SIJ100X75-50
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X75-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X75-50
- 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 SIJ100X75-50
The AirTAC SIJ100X75-50 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 50 mm on-site, yielding a usable 25-75 mm stroke from the 75 mm nominal maximum. The 100 mm bore features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G1/2 port, and 30-800 mm/s speed.
The direct replacement is the SAIJ100X75-50, matching the ISO 15552 mounting interface, force, and port. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S) and cannot take a sensor; the stop screw sets end position but is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X75-50 |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-50 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 SAIJ100X75-50 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 SIJ100X75-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SIJ100X75-50 Is Used
Press Fit Tuning
Allows operators to dial in the exact 25-75 mm extend position for inserting bearings without machining hard stops.
Variable Diverter Gate
Adjusts the extend stroke on-site to accommodate different package sizes on a sorting line.
Adjustable Pallet Stop
Sets precise end positions for varying pallet depths, using the 50 mm trim window to adapt to different load lengths.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X75-50 with the SAIJ100X75-50
To replace the discontinued SIJ100X75-50, order the SAIJ100X75-50 direct: it preserves the G1/2 port, 75 mm nominal stroke, 50 mm adjust window, and FA/LB/TC mountings. Choose the 50 mm adjust window when you need to tune the extend stroke down to 25 mm on-site. Because this non-magnetic SKU cannot accept a switch, add a -S magnet if sensing is required. For strokes at or over 300 mm, verify your side-load limits to prevent guide wear. Note that the stop screw only sets the end position; for load holding on air loss, use an external rod lock or the SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X75-50
- ✓ 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 SIJ100X75-50 FAQ
Yes, the SIJ100X75-50 is discontinued. The direct replacement is the SAIJ100X75-50, which matches the ISO 15552 interface, 100 mm bore, 75 mm stroke, 50 mm adjust window, and G1/2 port. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 50 mm adjust window, allowing you to shorten the 75 mm nominal extend stroke down to 25 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X75-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X75-50 replacement — usually within 7-8 hours.