This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X135-20S, 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 135mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X135-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke135 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X135-20S
- 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S
The AirTAC SIJ32X135-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32 mm bore, G1/8 port, and a 135 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 115-135 mm extension window. The direct replacement is the SAIJ32X135-20S, sharing the same interface, force, port, and mounting.
The SAIJ successor retains the built-in piston magnet for legacy CS1-B/DS1-B switches and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; for held loads use an external rod lock or the SAIL/BSAI variants.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X135-20S |
| Bore size | Ø32 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ32X135-20S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAIJ32X135-20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×135 | 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S Is Used
Actuator End-Position Trimming
Dialing in the exact extend reach on a machining fixture by trimming up to 20 mm on-site, avoiding the need to physically shim or swap cylinders for part variations.
Variable Length Sorting Diverter
Adjusting the extend stroke on a package routing gate to accommodate different carton depths without repositioning the cylinder mounting block.
Adjustable Forming Stop
Setting precise material push distances on a packaging line where the extend endpoint must be tuned for various bag or film formats.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S with the SAIJ32X135-20S
To replace the discontinued SIJ32X135-20S, order the SAIJ32X135-20S direct directly. Choose the 20 mm adjust window if your application requires field tuning the extend stroke between 115 and 135 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix confirms the piston magnet is present for switch sensing. For strokes at or above 300 mm, verify side-load guidance to prevent rod binding. The external stop sets end position only; it does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X135-20S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X135-20S FAQ
Yes, the SIJ32X135-20S is discontinued. The direct replacement is the SAIJ32X135-20S. It shares the same ISO 15552 interface, 32 mm bore, 135 mm stroke, 20 mm adjust window, G1/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 20 mm adjustment window, allowing the extend stroke to be shortened on-site from the 135 mm maximum down to 115 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X135-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X135-20S replacement — usually within 7-8 hours.