This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X275-30S, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X275-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X275-30S
- 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S
The AirTAC SIJ80X275-30S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the SAIJ80X275-30S. An external stop screw lets you trim the extend stroke by up to 30mm on-site, yielding a usable 245-275mm window from the 275mm nominal maximum. The stop sets the end position but is not a load lock.
The SAIJ direct keeps the G3/8 port, M20x1.5 rod thread, and 36mm adjustable cushions. The SAI replacement uses an upgraded two-piece Y-shaped piston seal for low start-up pressure. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors. For load-holding without live air, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X275-30S |
| Bore size | Ø80 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X275-30S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X275-30S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S Is Used
Press Fit Tuning
Allows operators to fine-tune the 245-275mm extend stroke on-site by up to 30mm to dial in exact press-fit depths for bearings without swapping cylinders.
Variable Stop Positioning
Provides an adjustable hard stop for diverter mechanisms on packaging lines, letting maintenance shorten the extend stroke by 30mm to adapt to new carton sizes.
Palletizing Height Adjust
Offers a field-adjustable end position for palletizing pushes, trimming the stroke down from 275mm to accommodate varying pallet load heights precisely.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S with the SAIJ80X275-30S
To replace the discontinued SIJ80X275-30S, order the exact direct replacement SAIJ80X275-30S, which preserves the ISO 15552 mounting interface, 275mm stroke, 30mm adjust window, and G3/8 port. Choose the 30mm adjust window if your field tuning requires trimming the extend stroke by up to 30mm. Mounting options include Basic, FA, LB, and TC. The -S suffix ensures a piston magnet is present. For this 275mm stroke, verify side-load limits to prevent excessive rod bearing wear. The external stop sets end position but does not lock; for held loads use an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X275-30S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X275-30S FAQ
Yes, the SIJ80X275-30S is discontinued. The direct replacement is the SAIJ80X275-30S. It shares the same ISO 15552 interface, 80mm bore, 275mm stroke, 30mm adjust window, G3/8 port, and mounting options. The SAIJ family also uses an upgraded piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 30mm on-site, giving a usable 245-275mm window from the 275mm nominal maximum. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X275-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X275-30S replacement — usually within 7-8 hours.