This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-75, 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 SIJ63X150-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X150-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X150-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X150-75
- 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 SIJ63X150-75
The AirTAC SIJ63X150-75 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 75 mm on-site, giving a usable 75-150 mm window from the 150 mm nominal maximum. This SKU lacks a magnet (-S), so it cannot accept a magnetic switch.
The direct replacement is the SAIJ63X150-75, matching the ISO 15552 interface, bore, stroke, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position only; it is not a lock, and the cylinder drifts on air loss.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-75 |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAIJ63X150-75 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 SAIJ63X150-75 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 SIJ63X150-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SIJ63X150-75 Is Used
Variable Depth Drilling
Tune the 75-150 mm extend stroke on-site to match multiple drill depths without swapping the entire cylinder.
Tiered Pallet Stops
Trim the extend stroke by up to 75 mm to create variable stop positions for pallets of varying heights.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-75 with the SAIJ63X150-75
Replace the discontinued SIJ63X150-75 directly with the SAIJ63X150-75, reusing your FA, LB, or TC ISO 15552 mounts. The 75 mm adjust window is ideal for field-tuning the extend end position without machining. For strokes of 300 mm or more, verify side-load limits to prevent rod binding. This non-magnetic SKU cannot take sensors; if sensing is needed, select a -S model (legacy CS1-B/DS1-B accuracy). For load-holding, the stop screw is not a brake—use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X150-75
- ✓ 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 SIJ63X150-75 FAQ
Yes, the SIJ63X150-75 is discontinued. The direct replacement is the SAIJ63X150-75, which shares the identical ISO 15552 interface, 150 mm stroke, 75 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 75 mm adjust window, allowing the extend stroke to be shortened from 150 mm down to 75 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X150-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X150-75 replacement — usually within 7-8 hours.