This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40BX130, 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 SI40BX130
The AirTAC Airtac SI40 Standard Cylinder SI40BX130 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 SAI40BX130, 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 → SAI40BX130
- 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 SI40BX130
The AirTAC SI40BX130 is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 130mm stroke. It delivers 628 N push force at 0.5 MPa via a G1/4 port. The direct replacement is the SAI40BX130, matching the interface, force, and port exactly. This SKU features a SUS304 stainless steel rod and lacks a magnet, so it cannot accept a sensor.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that a plain cylinder drifts without air; use a pilot check valve or the SAIL/BSAI lock variants.
Airtac SI40 Standard Cylinder SI40BX130 Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40BX130 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40BX130 |
| 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 SAI40BX130 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 SAI40BX130 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 SI40BX130
| 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 SI40BX130 Is Used
Bottle Diverting
Pushes product lanes on packaging lines using the 628 N force, with the SUS304 rod resisting washdown moisture.
Pallet Stops
Acts as a pneumatic stop for light pallets, benefiting from the adjustable 27mm cushion to soften end impacts.
Small Presses
Provides reliable clamping force in light assembly jigs where the 130mm stroke and G1/4 port fit existing fixtures.
Replacing the Airtac SI40 Standard Cylinder SI40BX130 with the SAI40BX130
To replace the SI40BX130, order the SAI40BX130. Verify the ISO 15552 mounting interface, 40mm bore, 130mm stroke, G1/4 port, and SUS304 stainless rod. Because this SKU has no magnet, it cannot use CS1-B/DS1-B sensors; order a -S version if position sensing is required. At 0.5 MPa it pushes 628 N; sizing down to a 32mm bore yields 402 N, while a 50mm bore yields 982 N. For stroke lengths over 300mm, use a guide to prevent rod bending. The air cushion only decelerates; for load holding on air loss, use an external rod lock or the SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40BX130
- ✓ 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 SI40BX130 FAQ
Yes, the SI40BX130 is discontinued. The direct replacement is the SAI40BX130. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 130mm stroke, G1/4 port, and mounting interface.
The 40mm bore uses a G1/4 port. It generates 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40BX130
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40BX130 replacement — usually within 7-8 hours.