This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X35-20S, 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 SIJ100X35-20S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X35-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 35mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X35-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X35-20S
- 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 SIJ100X35-20S
The AirTAC SIJ100X35-20S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and a 35 mm nominal extend stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 15-35 mm end position. This SIJ model is discontinued; the direct replacement is the SAIJ100X35-20S, matching the ISO 15552 interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note the stop screw sets the end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X35-20S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X35-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X35-20S |
| Bore size | Ø100 mm |
| Stroke | 35 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 SAIJ100X35-20S 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 SAIJ100X35-20S 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 SIJ100X35-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×35 | 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 SIJ100X35-20S Is Used
Short-Stroke Clamping
Adjusts the extend contact point on the fly to clamp parts with varying thicknesses without repositioning the cylinder body.
Transfer Pusher Setup
Trims the extend stroke by up to 20 mm on-site to dial in the exact push distance for diverting packages between conveyor lanes.
Fixture Actuation
Fine-tunes the end position during prototype tooling setup, allowing 15-35 mm of travel to accommodate iterative design changes.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X35-20S with the SAIJ100X35-20S
To replace the discontinued SIJ100X35-20S, order the direct replacement SAIJ100X35-20S, which retains the 100 mm bore, 35 mm nominal stroke, 20 mm adjust window, G1/2 port, and ISO 15552 mounting interfaces (Basic, FA, LB, TC). Choose the 20 mm adjust window if your assembly requires field tuning of the 15-35 mm extend stroke. The -S magnet supports legacy CS1-B/DS1-B sensors. For longer strokes (>=300 mm), verify the side-load capacity to prevent rod deflection.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X35-20S
- ✓ 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 SIJ100X35-20S FAQ
Yes, the SIJ100X35-20S is discontinued. The direct replacement is the SAIJ100X35-20S. It shares the same ISO 15552 interface, 100 mm bore, 35 mm stroke, 20 mm adjust window, G1/2 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal.
The external stop screw window is 20 mm, allowing you to trim the 35 mm nominal extend stroke down to 15 mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X35-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X35-20S replacement — usually within 7-8 hours.