This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X60-20S, 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X60-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X60-20S
- 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S
The AirTAC SIJ125X60-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 60 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 40-60 mm extension window. The direct replacement is the SAIJ125X60-20S, retaining the same interface, force, and adjustability.
The SAIJ successor upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X60-20S |
| Bore size | Ø125 mm |
| Stroke | 60 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ125X60-20S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAIJ125X60-20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S Is Used
Press Fit Tuning
Allows operators to fine-tune the 40-60 mm extend stroke on-site for pressing bearings, ensuring exact seating depth without changing the cylinder body.
Variable Depth Sealing
Ideal for sealing cartons of varying heights, where the 20 mm external stop adjustment accommodates different flap thicknesses on the fly.
End-Stop Calibration
Used in assembly stations to dial in the exact extend endpoint for part insertion, providing a hard mechanical stop that sets end position precisely.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S with the SAIJ125X60-20S
To replace the discontinued SIJ125X60-20S, order the exact direct replacement SAIJ125X60-20S, which preserves the 125 mm bore, 60 mm stroke, 20 mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 20 mm adjust window if your end-position tuning falls within 40-60 mm. Mounting options include Basic, FA, LB, and TC. The -S suffix ensures a piston magnet for legacy CS1-B/DS1-B switches. For strokes at or above 300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X60-20S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X60-20S FAQ
Yes, the SIJ125X60-20S is discontinued. The direct replacement is the SAIJ125X60-20S. It shares the same ISO 15552 interface, 125 mm bore, 60 mm stroke, 20 mm adjust window, G1/2 port, and mounting options, while upgrading the piston seal to two Y-shaped one-way elements for longer life.
The external stop screw allows you to trim the extend stroke by up to 20 mm on-site, giving a usable 40-60 mm extension. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X60-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X60-20S replacement — usually within 7-8 hours.