This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X60SN, 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 SI40X60SN
The AirTAC Airtac SI40 Standard Cylinder SI40X60SN 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 SAI40X60SN, 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 → SAI40X60SN
- 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 SI40X60SN
The AirTAC SI40X60SN is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 60mm stroke. It delivers 628N push force at 0.5MPa through a G1/4 port. The direct replacement is the SAI40X60SN, retaining the exact interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -N denotes NBR seals (-20 to 70C), though Viton H is available for heat. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI40 Standard Cylinder SI40X60SN Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X60SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X60SN |
| 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 SAI40X60SN 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 SAI40X60SN 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 SI40X60SN
| 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 SI40X60SN Is Used
Component Clamping
Ideal for securing mid-weight machined parts during milling or drilling, utilizing the 628N push force at 0.5MPa for rigid hold-down.
Package Diverting
Drives short-stroke sorting gates on packaging lines, where the 60mm travel and 30-800mm/s speed provide rapid, precise package redirection.
Replacing the Airtac SI40 Standard Cylinder SI40X60SN with the SAI40X60SN
To replace the SI40X60SN, order the SAI40X60SN. Confirm the ISO 15552 mounting interface, 60mm stroke, G1/4 port, and your mounting accessory (LB, FA, TC, etc.). The -S magnet enables CS1-B/DS1-B switches, while the SAI uses current AirTAC sensors. For sizing, a 32mm bore yields 402N [email protected], and a 50mm bore yields 982N. Note: this plain cylinder drifts without air; use a pilot check valve or SAIL/BSAI lock for holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X60SN
- ✓ 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 SI40X60SN FAQ
Yes, the SI40X60SN is discontinued. The direct replacement is the SAI40X60SN. It is dimensionally interchangeable per ISO 15552, matching the 40mm bore, 60mm stroke, 628N force, G1/4 port, and mounting fixtures.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a 128kgf max at 1.0MPa. Operating speed is 30-800mm/s. It features a 16mm rod, M12x1.25 thread, and 27mm cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X60SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X60SN replacement — usually within 7-8 hours.