This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X125SLB, 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 SI32 Standard Air Cylinder SI32X125SLB
The AirTAC SI32 Standard Air Cylinder SI32X125SLB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 125mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X125SLB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X125SLB
- 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 SI32 Standard Air Cylinder SI32X125SLB
The AirTAC SI32X125SLB is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 125 mm stroke, and LB foot mount. Built for standard pneumatics, it delivers 402 N push force at 0.5 MPa via a G1/8 port. Because this SI unit is end-of-life, you should order the direct replacement: SAI32X125SLB. It shares the same ISO 15552 mounting interface, bore, stroke, and output force, dropping straight into your existing LB foot brackets.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and extended lifespan. For position sensing, the -S magnet on this legacy model works with CS1-B/DS1-B switches, whereas the SAI replacement uses current AirTAC sensors. Note that a standard cylinder drifts without live air; for held loads, consider the SAIL lock or BSAI clamp-lock variants the SI line lacked.
Airtac SI32 Standard Air Cylinder SI32X125SLB Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X125SLB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X125SLB |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI32X125SLB carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X125SLB produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32X125SLB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SI32 Standard Air Cylinder SI32X125SLB Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably eject small machined components from a fixture without damaging the surface.
Package Diverting
The 125 mm stroke and LB foot mount provide precise actuation for diverting lightweight packages on a sorting line.
Replacing the Airtac SI32 Standard Air Cylinder SI32X125SLB with the SAI32X125SLB
To replace the discontinued SI32X125SLB, order the SAI32X125SLB. Verify your ISO 15552 interface, 32 mm bore, 125 mm stroke, G1/8 port, and LB foot mounting accessory. The -S magnet confirms compatibility with legacy CS1-B/DS1-B sensors (the SAI uses current switches). When sizing, a 32 mm bore yields 402 N push and 345 N pull at 0.5 MPa; stepping up to a 40 mm bore increases push to 628 N. Because stroke is 125 mm, side-load and rod-bending risks are low, but always ensure proper alignment. A plain profile cylinder does not hold load on air loss—the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X125SLB
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32X125SLB FAQ
Yes, the SI32X125SLB is discontinued. The direct replacement is the SAI32X125SLB. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 125 mm stroke, G1/8 port, and LB mounting interface.
The 32 mm bore features a G1/8 port. It delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X125SLB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X125SLB replacement — usually within 7-8 hours.