This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X150, 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 SID Series Double-Rod Cylinder SID125X150
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X150
- 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 SID Series Double-Rod Cylinder SID125X150
The AirTAC SID125X150 is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 5734 N @0.5 MPa. It features a 125mm bore, 150mm stroke, M27x2 rod thread, and a G1/2 port. The direct replacement is the SAID125X150, matching the interface, mounting, and stroke.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this SKU lacks a -S magnet, it cannot take a magnetic switch.
Airtac SID Series Double-Rod Cylinder SID125X150 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X150 |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAID125X150 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 SAID125X150 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID125X150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | 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 SID Series Double-Rod Cylinder SID125X150 Is Used
Equal-Force Forming Press
Applies 5734 N of identical push and pull force at 0.5 MPa for symmetrical metal stamping, leveraging the 40mm adjustable cushion to decelerate heavy tooling.
Dual-End Transfer Unit
Uses the rod extending from both ends to shuttle pallets on parallel conveyor lanes simultaneously, ensuring perfectly synchronized 150mm travel without external linkages.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X150 with the SAID125X150
To replace the discontinued SID125X150, install the SAID125X150 directly; it reuses the exact ISO 15552 mounting (Basic, FA, LB, TC) and G1/2 port. Choose a double-rod cylinder when you need equal force both ways, anti-rotation stability, or to drive two tools simultaneously. Size by checking neighbouring bores against the equal-both-ways force. For stroke lengths >=300mm, verify side-load limits to prevent guide wear. Note this non-magnetic SKU cannot use sensors. A plain cylinder does not hold loads on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X150
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID125X150 FAQ
Yes, the SID125X150 is discontinued. The direct replacement is the SAID125X150, offering the same ISO 15552 interface, 125mm bore, 150mm stroke, G1/2 port, and mounting. The SAI family also adds upgraded seals and SAIL/BSAI lock variants.
Force is equal both ways due to the double-rod design: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. The air port is G1/2, rod thread is M27x2, and speed is 30-500 mm/s. The cushion only decelerates; it does not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X150
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X150 replacement — usually within 7-8 hours.