This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X35-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X35-20S in place of this model. 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 SIJ80X35-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 35mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X35-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X35-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S
The AirTAC SIJ80X35-20S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 15-35 mm extend window from the 35 mm nominal maximum. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. It features a Ø25 mm rod, M20x1.5 rod thread, 36 mm adjustable cushions, and a fixed G3/8 port. The exact drop-in replacement is the SAIJ80X35-20S, sharing the same interface, force, and mounting.
The SAIJ upgrade incorporates an improved two-piece Y-shaped piston seal for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push force), translating to a 128 kg vertical lift with a 2:1 margin. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B sensors. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X35-20S |
| Bore size | Ø80 mm |
| Stroke | 35 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 SAIJ80X35-20S 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 SAIJ80X35-20S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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 SIJ80X35-20S Is Used
Short-Stroke Clamping
Adjustable end-position clamping of castings on a machining fixture, allowing operators to dial in the exact 15-35 mm extend reach to accommodate varying part tolerances.
Transfer Diverter
Actuating a diverter gate on a packaging line where the required extend length must be tuned on-site to meet the physical stops of different product sizes without re-plumbing.
Light Pressing
Performing a precise 2513 N pressing operation for bearing insertion, where the 20 mm adjust window provides a mechanical stop to prevent over-travel and ensure consistent depth.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X35-20S with the SAIJ80X35-20S
To replace the discontinued SIJ80X35-20S, order the exact drop-in SAIJ80X35-20S, which preserves the 80 mm bore, 35 mm nominal stroke, 20 mm adjust window, G3/8 port, and ISO 15552 mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2). When sizing both ways, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N push at 0.5 MPa. Choose the 20 mm adjust window if your application requires field tuning the extend stroke down to a 15 mm minimum. The -S suffix ensures a piston magnet is present for position sensing; the SAIJ replacement uses current AirTAC switches. Because the nominal stroke is 35 mm (under 300 mm), side-load rod deflection is minimal. The external stop screw merely sets the end position and is not a lock; for load holding on air loss, select an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X35-20S
- ✓ 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 SIJ80X35-20S FAQ
Yes, the AirTAC SIJ80X35-20S is discontinued. The exact drop-in replacement is the SAIJ80X35-20S. It shares the same ISO 15552 interface, 80 mm bore, 35 mm stroke, 20 mm adjust window, G3/8 port, and mounting options, but features an upgraded two-piece Y-shaped piston seal for longer life.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa, with a theoretical max of 513 kgf at 1.0 MPa. The external stop screw provides a 20 mm adjust window, allowing you to shorten the 35 mm nominal extend stroke down to 15 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X35-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X35-20S replacement — usually within 7-8 hours.