This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X400-10, 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 SIJ63X400-10
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X400-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X400-10, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X400-10
- 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 SIJ63X400-10
The AirTAC SIJ63X400-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 400 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, giving a usable 390-400 mm window. As an SIJ model it is end-of-life; the direct replacement is the SAIJ63X400-10, retaining the same interface, force, and adjust window.
The SAIJ successor uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life, while adding SAIL and BSAI lock variants the SI line lacked. Note this SKU has no -S magnet and cannot take a switch; the stop screw sets end position but is not a load lock, so use an external rod lock for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X400-10 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X400-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X400-10 |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAIJ63X400-10 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 SAIJ63X400-10 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 SIJ63X400-10
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 SIJ63X400-10 Is Used
Press Fit Micro-Adjustment
Needs field stroke tuning to dial in a precise 390-400 mm press fit, allowing on-site compensation for material thickness variations without changing the cylinder.
Transfer Stopper Positioning
Requires adjusting the extend stop within a 10 mm window to fine-tune where products halt on a conveyor, ensuring exact placement before a robotic pick.
Pallet Deflection Compensation
Demands a trimmed extend stroke to account for pallet height tolerances, using the external stop screw to set a rigid, repeatable end position for stacking.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X400-10 with the SAIJ63X400-10
To replace the discontinued SIJ63X400-10, order the direct replacement SAIJ63X400-10, matching the 63 mm bore, 400 mm nominal stroke, 10 mm adjust window, and G3/8 port. Choose the 10 mm adjust window if you only need micro-trimming of the extend end position. Mounting reuses ISO 15552 interface dimensions with FA, LB, or TC brackets. Because this SKU lacks the -S suffix, it has no magnet and cannot accept legacy CS1-B/DS1-B sensors. Finally, at 400 mm stroke, mind side-load and rod-bending forces—use external guides to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X400-10
- ✓ 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 SIJ63X400-10 FAQ
Yes, the SIJ63X400-10 is discontinued. The direct replacement is the SAIJ63X400-10, which keeps the same ISO 15552 interface, 63 mm bore, 400 mm stroke, 10 mm adjust window, and G3/8 port.
The external stop screw window is 10 mm, shortening the extend stroke from 400 mm to 390 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X400-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X400-10 replacement — usually within 7-8 hours.