This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X60H, 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 SI40X60H
The AirTAC Airtac SI40 Standard Cylinder SI40X60H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 60mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X60H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X60H
- 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 SI40X60H
The AirTAC SI40X60H is a discontinued double-acting ISO 15552 profile cylinder with a 40 mm bore and 60 mm stroke. Built for high-temperature duty with a Viton H seal (0 to 150 C), it delivers 628 N push force at 0.5 MPa through a G1/4 port. AirTAC replaced this legacy unit with the SAI40X60H.
The SAI40X60H is a direct replacement matching the ISO 15552 mounting interface, bore, stroke, force and port. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. Note this non-magnet SKU cannot accept a sensor.
Airtac SI40 Standard Cylinder SI40X60H Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X60H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X60H |
| Bore size | Ø40 mm |
| Stroke | 60 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 SAI40X60H 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 SAI40X60H 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 SI40X60H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 SI40X60H Is Used
Hot End Ejection
Ideal for pushing parts out of heated molds using the Viton H seal rated for 0-150 C environments.
Diverting Arms
Provides 628 N push at 0.5 MPa to actuate routing gates on packaging lines safely.
Replacing the Airtac SI40 Standard Cylinder SI40X60H with the SAI40X60H
To replace the discontinued SI40X60H, order the SAI40X60H. It drops into existing fixtures using the same ISO 15552 dimensions, 40 mm bore, 60 mm stroke, G1/4 port and M12x1.25 rod thread. Retain your original mounting accessory and confirm the high-temperature Viton H seal requirement. Because this SKU lacks the -S magnet, it cannot host CS1-B/DS1-B sensors; if sensing is needed, switch to an SAI40X60HS. If sizing up or down, adjacent bores are 32 mm (402 N push @0.5 MPa) and 50 mm (982 N push @0.5 MPa). A plain cylinder drifts on air loss, so for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X60H
- ✓ 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 SI40X60H FAQ
Yes, the SI40X60H is discontinued. The direct replacement is the SAI40X60H. It matches the ISO 15552 mounting interface, 40 mm bore, 60 mm stroke, output force and G1/4 port, fitting existing fixtures perfectly.
The 40 mm bore features a G1/4 port and M12x1.25 rod thread. It delivers 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 maximum theoretical force of 128 kgf at 1.0 MPa.
Request a Quote for the SAI40X60H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X60H replacement — usually within 7-8 hours.