This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X95, 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 SI40 Standard Cylinder SI40X95
The AirTAC Airtac SI40 Standard Cylinder SI40X95 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 95mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X95, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X95
- 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 SI40 Standard Cylinder SI40X95
The AirTAC SI40X95 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 95mm stroke, delivering 628N push and 528N pull at 0.5MPa. The direct replacement is the SAI40X95, retaining the same G1/4 port, M12x1.25 rod thread, and 27mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This no-magnet SKU cannot take a sensor, unlike the CS1-B/DS1-B legacy switches used on -S models.
Airtac SI40 Standard Cylinder SI40X95 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X95 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X95 |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAI40X95 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 SAI40X95 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI40 Standard Cylinder SI40X95
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SI40 Standard Cylinder SI40X95 Is Used
Package Diverting
Actuates routing gates on 40mm bore conveyors, providing 628N push at 0.5MPa to redirect moderate-weight cartons smoothly.
Component Ejection
Pushes finished parts out of machining fixtures using a 95mm stroke, relying on adjustable 27mm air cushions to soften end-of-travel impact.
Small Press Fit
Applies steady clamping force for inserting bearings or pins, safely handling a 377N working load with an adequate safety margin.
Replacing the Airtac SI40 Standard Cylinder SI40X95 with the SAI40X95
To replace the SI40X95, order the SAI40X95 with the exact 40mm bore, 95mm stroke, G1/4 port, and your PT/G/NPT thread choice. Confirm your ISO 15552 mounting accessory (LB, FA, TC, etc.) carries over. Because this SKU lacks the -S magnet, it cannot accept position sensors. For sizing, the 628N push at 0.5MPa handles moderate loads, while stepping up to a 50mm bore yields 982N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL lock and SAIF self-valve variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X95
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI40 Standard Cylinder SI40X95 FAQ
Yes, the AirTAC SI40X95 is discontinued. The direct replacement is the SAI40X95. It is dimensionally interchangeable per ISO 15552, matching the exact 40mm bore, 95mm stroke, 628N force, G1/4 port, and mounting interface, so it fits existing fixtures perfectly.
The 40mm bore features a G1/4 air port and a 16mm rod. It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical maximum of 128kgf at 1.0MPa. Operating speed is 30-800mm/s.
Request a Quote for the SAI40X95
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X95 replacement — usually within 7-8 hours.