This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID40X150, 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 SID40X150
The AirTAC Airtac SID Series Double-Rod Cylinder SID40X150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 150mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID40X150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAID40X150
- 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 SID40X150
The AirTAC SID40X150 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 528 N @0.5 MPa. The SID40X150 is discontinued and the direct replacement is the SAID40X150, matching the 40mm bore, 150mm stroke, G1/4 port, and mounting interface. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life.
Because both faces use the rod-side area, force is equal both ways (528/739/950 N at 0.5/0.7/0.9 MPa). This non-magnet SKU cannot take a switch. A plain cylinder drifts on air loss; cushions only decelerate, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID40X150 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID40X150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID40X150 |
| Bore size | Ø40 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID40X150 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAID40X150 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 SID40X150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | 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 SID40X150 Is Used
Dual-Tool Transfer
Drives two independent workpieces simultaneously from opposite rod ends, halving cycle time in compact indexing assemblies.
Anti-Rotation Edge Guide
The twin-rod geometry prevents piston twisting during precise paper or foil web edge guiding without external linear bearings.
Symmetrical Lift Station
Equal both-ways force ensures stable, balanced vertical lifting of 27 kg payloads without the force drop of single-rod designs.
Replacing the Airtac SID Series Double-Rod Cylinder SID40X150 with the SAID40X150
Replace the discontinued SID40X150 directly with the SAID40X150, reusing your existing ISO 15552 FA, LB, or TC mounts. Size both ways by confirming the 528 N @0.5 MPa equal force is sufficient, or step to the neighbouring 50mm bore. Choose a double-rod when you need anti-rotation, to drive two tools, or use the back rod as a sensor cam (though this no-S SKU lacks a magnet for switches). For this 150mm stroke, side-load is minimal, but for stroke >=300mm ensure guide alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID40X150
- ✓ 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 SID40X150 FAQ
Yes, the SID40X150 is discontinued. The direct replacement is the SAID40X150. It shares the identical ISO 15552 interface, 40mm bore, 150mm stroke, G1/4 port, and mounting options, while adding an upgraded piston seal.
It features a G1/4 air port. Because it is a double-rod cylinder, force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAID40X150
Send us the quantity and destination. We confirm price, stock and lead time on the SAID40X150 replacement — usually within 7-8 hours.