This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X65-30S, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 65mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X65-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X65-30S
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S
The AirTAC SIJ50X65-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now DISCONTINUED. The direct replacement is the SAIJ50X65-30S, matching the 50mm bore, 65mm nominal stroke, G1/4 port, and mounting interface. An external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable extend range of 35-65mm. This stop sets the end position; it is not a load lock.
The SAIJ upgrade uses an upgraded piston seal (two Y-shaped one-way elements) for lower start-up pressure and longer life. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X65-30S |
| Bore size | Ø50 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ50X65-30S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAIJ50X65-30S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×65 | 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S Is Used
Variable Depth Diving Heads
Allows operators to tune the extend stroke on-site by up to 30mm to accommodate varying material thicknesses or depths without swapping cylinders.
Adjustable Transfer Pushers
Fine-tunes the pusher end position for different package sizes on a packaging line, ensuring precise placement without reprogramming the motion controller.
Variable Position Stops
Provides a field-adjustable hard stop for product sorting diverters, enabling quick changeovers for different pallet or container lengths.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S with the SAIJ50X65-30S
To replace the discontinued SIJ50X65-30S, order the direct replacement SAIJ50X65-30S, reusing your existing ISO 15552 FA, LB, or TC mounts. The 30mm adjust window allows precise field tuning from 35 to 65mm extend. The -S magnet supports legacy CS1-B/DS1-B sensors (current AirTAC switches are used on the SAIJ). Because this is a 65mm stroke, side-load risks are minimal, but always verify guide alignment. Remember: a plain cylinder drifts on air loss—the stop screw is not a lock; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X65-30S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X65-30S FAQ
Yes, the AirTAC SIJ50X65-30S is discontinued. The direct replacement is the SAIJ50X65-30S. It shares the same ISO 15552 interface, 50mm bore, 65mm stroke, 30mm adjust window, G1/4 port, and mounting options, but adds an upgraded piston seal.
The external stop screw provides a 30mm adjust window, allowing you to trim the extend stroke from the 65mm maximum down to 35mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X65-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X65-30S replacement — usually within 7-8 hours.