This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X250-50, 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 SIJ32X250-50
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X250-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X250-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X250-50
- 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 SIJ32X250-50
The AirTAC SIJ32X250-50 is a discontinued double-acting double-rod adjustable-stroke ISO 15552 cylinder. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable 200-250 mm window from the 250 mm nominal maximum. The stop sets the end position; it is not a load lock, and a plain cylinder drifts on air loss.
The direct replacement is the SAIJ32X250-50, retaining the same interface, force, and mounting. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This non-magnet SKU cannot take a switch.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-50 Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X250-50 |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAIJ32X250-50 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 SAIJ32X250-50 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 SIJ32X250-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SIJ32X250-50 Is Used
Variable Depth Drilling Jig
Trimming the 50 mm extend window on-site allows a 32 mm bore cylinder to set precise multiple drilling depths without swapping the entire actuator.
Custom Stroke Forming Press
Dial in the exact end position for light-duty pressing tasks, relying on the external stop screw to set the precise 250 mm maximum extend limit.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-50 with the SAIJ32X250-50
To replace the discontinued SIJ32X250-50, order the direct replacement SAIJ32X250-50, which keeps the 250 mm stroke, 50 mm adjust window, and G1/8 port. Choose the 50 mm adjust window if your extend stroke needs on-site tuning between 200 and 250 mm. Mounting hardware (FA, LB, TC) reuses the ISO 15552 interface. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch for sensing. For strokes of 300 mm or longer, verify your side-load limits to prevent guide wear. The external stop only sets end position; it does not lock, so use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X250-50
- ✓ 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 SIJ32X250-50 FAQ
Yes, the SIJ32X250-50 is discontinued. The direct replacement is the SAIJ32X250-50, which shares the same ISO 15552 interface, 32 mm bore, 250 mm stroke, 50 mm adjust window, and G1/8 port. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 50 mm adjust window, allowing you to shorten the 250 mm nominal extend stroke down to 200 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X250-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X250-50 replacement — usually within 7-8 hours.