This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X50-20S, 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 SIJ32X50-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X50-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 50mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X50-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X50-20S
- 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 SIJ32X50-20S
The AirTAC SIJ32X50-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 30-50 mm window from the 50 mm nominal maximum. The stop sets the end position; it is not a load lock.
The direct replacement is the SAIJ32X50-20S, sharing the same interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X50-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X50-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X50-20S |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAIJ32X50-20S 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 SAIJ32X50-20S 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 SIJ32X50-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 SIJ32X50-20S Is Used
Short-Stroke Clamping
Adjustable 30-50 mm extend tunes the exact clamping reach on small fixture plates without machining custom spacers.
Transfer Diverter
Trimming the extend stroke by up to 20 mm on-site sets the precise diverter finger angle for varying package widths.
Light Press Fit
Dialing in the end position prevents over-travel when seating delicate 20 kg electronic subassemblies.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X50-20S with the SAIJ32X50-20S
To replace the discontinued SIJ32X50-20S, order the direct replacement SAIJ32X50-20S, reusing your existing FA, LB, or TC mounts. Choose the 20 mm adjust window when you need on-site extend trimming between 30 and 50 mm; the stop screw sets end position but is not a lock. The -S magnet enables position sensing. Because the 50 mm stroke is under 300 mm, side-load rod deflection is minimal. A plain cylinder drifts on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X50-20S
- ✓ 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 SIJ32X50-20S FAQ
Yes, the SIJ32X50-20S is discontinued. The direct replacement is the SAIJ32X50-20S. It shares the same ISO 15552 interface, 32 mm bore, 50 mm nominal stroke, 20 mm adjust window, G1/8 port, and mounting. The SAIJ features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 20 mm, allowing you to trim the extend stroke from the 50 mm maximum down to 30 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X50-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X50-20S replacement — usually within 7-8 hours.