This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X175-40S, 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 SIJ100X175-40S
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X175-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X175-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X175-40S
- 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 SIJ100X175-40S
The AirTAC SIJ100X175-40S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the SAIJ100X175-40S. It features a 100mm bore, G1/2 port, and a 175mm maximum extend stroke that can be trimmed on-site by up to 40mm via an external stop screw, yielding a usable 135-175mm window. The stop sets end position only; it is not a load lock.
The SAIJ direct replacement retains the exact ISO 15552 mounting interface, bore, and force, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X175-40S Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X175-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X175-40S |
| Bore size | Ø100 mm |
| Stroke | 175 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 SAIJ100X175-40S 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 SAIJ100X175-40S 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 SIJ100X175-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×175 | 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 SIJ100X175-40S Is Used
Variable Pitch Forming
Allows operators to dial in the exact extend stop position for metal forming tasks where material thickness varies between production runs.
Adjustable Diverter Gate
Tunes the extend stroke on-site to accommodate different package sizes on a sorting line without swapping the entire cylinder.
Variable Depth Sealing
Provides precise end-position control for sealing heads that must adapt to varying container depths on a packaging machine.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X175-40S with the SAIJ100X175-40S
To replace the discontinued SIJ100X175-40S, order the exact direct replacement SAIJ100X175-40S, which preserves the 100mm bore, 175mm nominal stroke, 40mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 40mm adjust window if your mechanism requires field tuning the extend stroke between 135mm and 175mm. Mounting options include Basic, FA, LB, and TC. The -S suffix ensures piston magnet presence for switch sensing. For strokes of 300mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X175-40S
- ✓ 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 SIJ100X175-40S FAQ
Yes, the SIJ100X175-40S is discontinued. The direct replacement is the SAIJ100X175-40S, sharing the same ISO 15552 interface, 100mm bore, 175mm stroke, 40mm adjust window, and G1/2 port. The SAIJ uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw offers a 40mm adjust window, allowing the 175mm extend stroke to be shortened to 135mm on-site. The stop sets position only and does not lock the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X175-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X175-40S replacement — usually within 7-8 hours.