This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X60-40S, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X60-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X60-40S
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S
The AirTAC SIJ50X60-40S 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 40mm on-site, giving a usable 20-60mm stroke from the 60mm nominal maximum. The direct replacement is the SAIJ50X60-40S, matching the interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X60-40S |
| Bore size | Ø50 mm |
| Stroke | 60 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 SAIJ50X60-40S 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 SAIJ50X60-40S 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 SIJ50X60-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×60 | 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 SIJ50X60-40S Is Used
Variable Depth Spot Facing
Adjusts the extend stroke on-site to machine blind holes to exact depths without re-homing the entire fixture.
Variable Pitch Sorting Diverter
Tunes the pusher extension to handle different product widths on the fly, preventing over-travel damage.
Adjustable Carton Flap Folder
Trims the extend stroke by up to 40mm to accommodate varying carton heights during case erecting.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S with the SAIJ50X60-40S
To replace the discontinued SIJ50X60-40S, order the direct replacement SAIJ50X60-40S, keeping the 50mm bore, 60mm nominal stroke, 40mm adjust window, and -S magnet. Select the 40mm adjust window if you need to trim the extend stroke on-site by up to 40mm; the stop screw sets the end position but is not a lock. Mounting options include FA, LB, and TC brackets. For stroke lengths >=300mm, verify side-load limits to prevent rod binding. The SAIJ family adds SAIL and BSAI lock variants if you need true load holding on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X60-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X60-40S FAQ
Yes, the SIJ50X60-40S is discontinued. The direct replacement is the SAIJ50X60-40S, which shares the same ISO 15552 interface, 50mm bore, 60mm stroke, 40mm adjust window, and G1/4 port.
The external stop screw window is 40mm, allowing you to trim the extend stroke from the 60mm maximum down to 20mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X60-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X60-40S replacement — usually within 7-8 hours.