This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X500-40S, 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 SIJ100X500-40S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X500-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X500-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X500-40S
- 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 SIJ100X500-40S
The AirTAC SIJ100X500-40S is a double-acting double-rod adjustable-stroke ISO 15552 cylinder featuring a 100mm bore and 500mm maximum stroke. An external stop screw allows you to trim the extend stroke by up to 40mm on-site, yielding a usable 460-500mm extension window. This SIJ model is discontinued; the direct replacement is the SAIJ100X500-40S, retaining the same interface, force, and adjustability.
The SAIJ upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The external stop screw sets the end position but is not a load lock; plain cylinders drift on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-40S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X500-40S |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-40S 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 SAIJ100X500-40S 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 SIJ100X500-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SIJ100X500-40S Is Used
Press Fit Tuning
Dialing in the exact insertion depth of a bearing press where a 40mm on-site stroke trim compensates for material tolerance variations without remounting the actuator.
Variable Length Diverter
Adjusting a pneumatic diverter arm stroke on a packaging line to handle changing carton sizes, using the stop screw to set the precise retracted end position.
Layer Pusher Alignment
Fine-tuning the push-off distance of a palletizing layer pusher to accommodate slight product overhang, preventing crushing by limiting the extend travel.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X500-40S with the SAIJ100X500-40S
To replace the discontinued SIJ100X500-40S, order the direct replacement SAIJ100X500-40S, which preserves the 100mm bore, 500mm nominal stroke, 40mm adjust window, G1/2 port, and ISO 15552 mounting interface. The 40mm adjust window is ideal for fine-tuning the extend endpoint without machining. Mounting options include Basic, FA, LB, and TC. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). Because the stroke is 500mm, ensure external guides are used to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X500-40S
- ✓ 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 SIJ100X500-40S FAQ
Yes, the SIJ100X500-40S is discontinued. The direct replacement is the SAIJ100X500-40S. It shares the same ISO 15552 interface, 100mm bore, 500mm stroke, 40mm adjust window, G1/2 port, and mounting options, while adding an upgraded piston seal.
The external stop screw allows you to shorten the extend stroke by up to 40mm on-site, giving a usable extension range of 460-500mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X500-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X500-40S replacement — usually within 7-8 hours.