This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X160-40S, 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 160mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X160-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X160-40S
- 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S
The AirTAC SIJ125X160-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 160 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 120-160 mm window. The stop sets end position only; it is not a load lock.
The direct replacement is the SAIJ125X160-40S, matching the ISO 15552 interface, force, and mounting. The SAIJ family uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note that a plain cylinder drifts on air loss; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X160-40S |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125X160-40S 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 SAIJ125X160-40S 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 SIJ125X160-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SIJ125X160-40S Is Used
Press Fit Tuning
Allows operators to dial in the exact 120-160 mm extend position for inserting bearings without machining hard stops.
Variable Length Diverter
Adjusts the extend stroke on-site to deflect different package sizes on a sorting line.
Adjustable Pallet Stop
Sets precise end positions for various pallet depths, using the 40 mm window to accommodate height differences.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S with the SAIJ125X160-40S
To replace the discontinued SIJ125X160-40S, order the direct replacement SAIJ125X160-40S, which preserves the G1/2 port, 40 mm adjust window, and ISO 15552 mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2). Choose the 40 mm adjust window if your extend stroke needs field tuning between 120 and 160 mm. Select the -S option for the built-in piston magnet compatible with legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). For strokes of 300 mm or longer, verify side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X160-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X160-40S FAQ
Yes, the SIJ125X160-40S is discontinued. The direct replacement is the SAIJ125X160-40S, offering the same ISO 15552 interface, 125 mm bore, 160 mm stroke, 40 mm adjust window, and G1/2 port. The SAIJ features an upgraded piston seal for longer life.
The external stop screw provides a 40 mm adjust window, allowing the extend stroke to be shortened from 160 mm down to 120 mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X160-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X160-40S replacement — usually within 7-8 hours.