This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X55-30, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 55mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X55-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X55-30
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30
The AirTAC SIJ100X55-30 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, yielding a usable 25-55 mm extend window from the 55 mm nominal maximum. This SKU has no -S magnet and cannot take a switch.
The direct replacement is the SAIJ100X55-30, matching the ISO 15552 interface, bore, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Note the stop screw sets end position only; it is not a load lock, and a plain cylinder drifts on air loss.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X55-30 |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100X55-30 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 SAIJ100X55-30 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 SIJ100X55-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SIJ100X55-30 Is Used
Press Fit Tuning
Dialing in a 25-55 mm press stroke for bearing insertion, where the 30 mm on-site stop screw window allows exact positioning without swapping cylinders.
Variable Diverter Gate
Adjusting a package routing gate stroke from 55 mm down to 25 mm on-site to accommodate different carton sizes on the fly.
Sealing Head Adjustment
Fine-tuning the extend end position of a 100 mm bore sealing head to compensate for material thickness variance within the 30 mm window.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30 with the SAIJ100X55-30
To replace the discontinued SIJ100X55-30, order the direct replacement SAIJ100X55-30, reusing your existing FA, LB, or TC ISO 15552 mounts. Choose the 30 mm adjust window if your end-position tuning falls within 25-55 mm. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors; add external physical stops if detection is required. For strokes at or above 300 mm, verify side-load limits to prevent guide wear. The stop screw merely sets end position, so for load holding on air loss use an external rod lock or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X55-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X55-30 FAQ
Yes, the SIJ100X55-30 is discontinued. The direct replacement is the SAIJ100X55-30, which shares the identical ISO 15552 interface, 55 mm stroke, 30 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.
The external stop screw allows you to trim the extend stroke by up to 30 mm on-site, giving a usable 25-55 mm window. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X55-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X55-30 replacement — usually within 7-8 hours.