This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X600-40S, 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 SIJ63X600-40S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X600-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X600-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X600-40S
- 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 SIJ63X600-40S
The AirTAC SIJ63X600-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 600 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 560-600 mm window. The direct replacement is the SAIJ63X600-40S.
The SAIJ upgrade retains the ISO 15552 mounting interface and introduces an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note that the stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-40S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X600-40S |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAIJ63X600-40S 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 SAIJ63X600-40S 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 SIJ63X600-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SIJ63X600-40S Is Used
Variable Pitch Indexing
Dialing the 40 mm extend window on a 600 mm stroke allows a machining line to alter material pitch without swapping the entire actuator assembly.
Adjustable Transfer Pusher
Trimming the extend stroke by up to 40 mm on-site accommodates varying package lengths on a conveyor without repositioning hard stops.
Dynamic Divert Gate
Field-tuning the 600 mm extend end position lets a sorting gate handle different pallet widths precisely before locking the stop screw.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-40S with the SAIJ63X600-40S
To replace the discontinued SIJ63X600-40S, order the direct replacement SAIJ63X600-40S, which matches the 63 mm bore, 600 mm stroke, 40 mm adjust window, G3/8 port, and FA/LB/TC mountings. The 40 mm adjust window is ideal if your end-stop needs minor field tuning. Retain the -S magnet for current AirTAC switches. Because the 600 mm stroke exceeds 300 mm, support the rod against bending and use external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X600-40S
- ✓ 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 SIJ63X600-40S FAQ
Yes, the SIJ63X600-40S is discontinued. The direct replacement is the SAIJ63X600-40S, offering the same 63 mm bore, 600 mm stroke, 40 mm adjust window, G3/8 port, and ISO 15552 mounting interface.
The external stop screw provides a 40 mm adjustable window, allowing the 600 mm extend stroke to be shortened to 560 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X600-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X600-40S replacement — usually within 7-8 hours.