This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X150S, 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 SID125X150S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X150S 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 SAID125X150S, 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 → SAID125X150S
- 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 SID125X150S
The AirTAC SID125X150S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. It features a 32mm rod, M27x2 thread, G1/2 port, and 40mm adjustable cushions. The direct replacement is the SAID125X150S, sharing the same mounting interface and stroke.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. A plain cylinder drifts on air loss as cushions only decelerate; use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID125X150S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X150S |
| 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 SAID125X150S 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 SAID125X150S 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 SID125X150S
| 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 SID125X150S Is Used
Equal-Force Forming Press
Drives a stamping die where identical push and pull thrust prevents tool deflection during bidirectional metal forming operations.
Dual-End Transfer Unit
Simultaneously pushes and retracts two linked conveyor diverters using both rod ends, keeping cycle times synchronized.
Anti-Rotation Indexing Gate
Uses the twin rods to resist torsional twist on a heavy material handling gate, maintaining precise linear tracking without external guides.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X150S with the SAID125X150S
Replace the discontinued SID125X150S directly with the SAID125X150S, reusing your existing ISO 15552 FA, LB, or TC mounts. Size both directions by equal force: this 125mm bore delivers 5734 N both ways; step down to a 100mm bore for 3681 N or up to 160mm for 9425 N. Choose a double-rod when you need anti-rotation stability or a back rod to carry a sensor cam. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For this 150mm stroke, side-load is minimal, but for any stroke >=300mm ensure guide alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X150S
- ✓ 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 SID125X150S FAQ
Yes, the SID125X150S is discontinued. The direct replacement is the SAID125X150S. It shares the same ISO 15552 interface, 125mm bore, 150mm stroke, G1/2 port, and mounting options, while adding an upgraded piston seal.
Being double-rod, force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. Operating speed is 30-500 mm/s. The cylinder uses a G1/2 port and 40mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X150S replacement — usually within 7-8 hours.