This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X800-40S, 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 SIJ100X800-40S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X800-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X800-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X800-40S
- 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 SIJ100X800-40S
The AirTAC SIJ100X800-40S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and 800 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable extend range of 760-800 mm. The stop sets the end position; it is not a load lock. It features a G1/2 port, an M20x1.5 rod thread, and 36 mm adjustable cushions.
This SIJ model is discontinued; the direct replacement is the SAIJ100X800-40S, retaining the same ISO 15552 interface, force, and adjust window. The SAIJ upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X800-40S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X800-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X800-40S |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAIJ100X800-40S 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 SAIJ100X800-40S 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 SIJ100X800-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SIJ100X800-40S Is Used
Press Fit Tuning
Final insertion depth of a bearing requires field stroke tuning. The 40 mm adjust window trims the 800 mm extend to dial in the exact press fit without re-mounting the actuator.
Variable Length Diverter
A diverting gate on a conveyor handles mixed package sizes.
Adjustable End Stop Pusher
A warehouse pusher loads pallets of varying widths. The external stop screw sets the precise 760-800 mm extend end position on-site, ensuring accurate placement without reprogramming.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X800-40S with the SAIJ100X800-40S
To replace the discontinued SIJ100X800-40S, specify the SAIJ100X800-40S direct: it keeps the 100 mm bore, 800 mm stroke, 40 mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 40 mm adjust window if you need to tune the extend stroke between 760 and 800 mm on-site. Reuse FA, LB, or TC mounts directly. The -S magnet supports legacy CS1-B/DS1-B switches (SAIJ uses current switches). At 800 mm stroke, mind side-load and rod-bending—use external guides to prevent premature wear. A plain cylinder drifts on air loss; for load holding use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X800-40S
- ✓ 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 SIJ100X800-40S FAQ
Yes, the SIJ100X800-40S is discontinued. The direct replacement is the SAIJ100X800-40S. It shares the same ISO 15552 interface, 100 mm bore, 800 mm stroke, 40 mm adjust window, G1/2 port, and mounting. The SAIJ family features an upgraded two-piece Y-shaped piston seal for longer life.
The nominal 800 mm extend stroke is the maximum; the external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable range of 760-800 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X800-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X800-40S replacement — usually within 7-8 hours.