This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-40S, 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X80-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X80-40S
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S
The AirTAC SIJ63X80-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 40-80 mm extend range from the 80 mm nominal maximum. The 63 mm bore features a G3/8 port, M16x1.5 rod thread, and 30 mm adjustable cushions. The direct replacement is the SAIJ63X80-40S, sharing the same interface, force, and adjust window.
The SAIJ replacement retains the ISO 15552 mounting footprint for direct reuse of FA, LB, and TC brackets. It also upgrades the piston seal to two Y-shaped one-way elements 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 SAIL/BSAI variant.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-40S |
| Bore size | Ø63 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X80-40S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X80-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S Is Used
Variable Stroke Clamping
Allows operators to fine-tune the extend position by up to 40 mm on-site to accommodate different part heights in a clamping station without changing the cylinder.
Adjustable Transfer Stops
Provides a field-adjustable end-stop for diverter arms on a conveyor, letting maintenance shorten the 80 mm stroke by up to 40 mm to adapt to new package sizes.
Tunable Pusher Pins
Enables precise positioning of pusher pins in a sorting system, trimming the extend stroke on-site to handle varied product widths without re-plumbing the G3/8 port.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S with the SAIJ63X80-40S
To replace the discontinued SIJ63X80-40S, order the direct replacement SAIJ63X80-40S, keeping the 80 mm nominal stroke and 40 mm adjust window. Choose the 40 mm adjust window if your extend stroke needs field tuning between 40 and 80 mm. Mounting interfaces are standard ISO 15552, so existing FA, LB, and TC brackets fit perfectly. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. Because the nominal stroke is 80 mm, side-load concerns are minimal, but always verify guide alignment. Remember, the stop screw sets end position and does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40S FAQ
Yes, the SIJ63X80-40S is discontinued. The direct replacement is the SAIJ63X80-40S. It shares the same ISO 15552 interface, 63 mm bore, 80 mm stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, yielding a usable 40-80 mm range. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-40S replacement — usually within 7-8 hours.