This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X130, 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 SI40X130
The AirTAC Airtac SI40 Standard Cylinder SI40X130 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 130mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X130, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X130
- 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 SI40X130
The AirTAC SI40X130 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 130mm stroke. It delivers 628N push force at 0.5MPa via a G1/4 port. AirTAC replaced this legacy unit with the SAI40X130 direct replacement, matching the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for immediate fixture compatibility.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding on air loss, the new SAI family offers SAIL and BSAI lock variants the original SI lacked. Since this specific SKU lacks a magnet (-S), it cannot accept a sensor.
Airtac SI40 Standard Cylinder SI40X130 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X130 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X130 |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAI40X130 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 SAI40X130 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 SI40X130
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SI40X130 Is Used
Component Clamping
Secures mid-weight machined parts during milling or drilling operations, utilizing the 628N push force to maintain rigid fixturing.
Package Diverting
Actuates routing gates or pusher arms on packaging lines, with the 130mm stroke providing sufficient travel to redirect goods.
Pallet Stopper
Functions as an indexing stop for lightweight pallets in material handling zones, safely decelerating loads via its adjustable cushions.
Replacing the Airtac SI40 Standard Cylinder SI40X130 with the SAI40X130
To replace the SI40X130, order the SAI40X130 and verify your ISO 15552 mounting interface, 130mm stroke, and G1/4 port. Confirm your mounting accessory (LB, FA, TC, etc.) and note that because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For sizing, a 50mm bore offers 982N push at 0.5MPa, while a 32mm bore provides 402N. At 130mm stroke, ensure guide alignment to prevent rod-bending side loads. A plain cylinder drifts without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X130
- ✓ 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 SI40X130 FAQ
Yes, the SI40X130 is discontinued. The direct replacement is the SAI40X130. It features the same ISO 15552 mounting interface, 40mm bore, 130mm stroke, output force, and G1/4 port, fitting directly into existing fixtures.
This double-acting cylinder has a 40mm bore, 16mm rod, M12x1.25 thread, and 27mm adjustable cushions. It operates at 30-800mm/s. Force ratings are 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a max of 128kgf at 1.0MPa.
Request a Quote for the SAI40X130
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X130 replacement — usually within 7-8 hours.