This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X900-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X900-40 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 SIJ80X900-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X900-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X900-40
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40
The AirTAC SIJ80X900-40 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 40 mm on-site, yielding a usable 860-900 mm window from the 900 mm nominal maximum. This 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, scaling to 4523 N at 0.9 MPa, via a G3/8 port.
As SIJ is end-of-life, the exact drop-in replacement is the SAIJ80X900-40, retaining the interface, force, and mountings. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Computed buyer insight: safe working load is ~1508 N (60% of the 0.5 MPa push), allowing a 128 kg vertical lift with a 2:1 margin. Note: this non-S SKU lacks a magnet and cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X900-40 |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80X900-40 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 SAIJ80X900-40 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 SIJ80X900-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SIJ80X900-40 Is Used
Variable-Length Press Fit
Adjusts the extend endpoint on-site for pressing bearings where a 40 mm trim window accommodates material thickness variations without swapping cylinders.
Adjustable Diverter Arm
Tunes the actuation length of a routing gate on a packaging line, allowing operators to shorten the 900 mm extend stroke to match varying box dimensions.
Variable-Height Stopper
Sets precise end positions for pallet stops, trimming the extend stroke by up to 40 mm to handle different pallet footprints while using the G3/8 port.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-40 with the SAIJ80X900-40
To replace the discontinued SIJ80X900-40, specify SAIJ80X900-40 for an exact drop-in match. When sizing both ways, the neighboring 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N. Choose the 40 mm adjust window if your extend endpoint needs on-site tuning within 860-900 mm. Mounting reuses ISO 15552 FA, LB, or TC interfaces. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For the 900 mm stroke, use external guides to prevent rod bending and side-load wear. The stop screw sets end position but is not a lock; for held loads use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X900-40
- ✓ 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 SIJ80X900-40 FAQ
Yes, the SIJ80X900-40 is discontinued. The exact drop-in replacement is the SAIJ80X900-40, which shares the identical ISO 15552 interface, 80 mm bore, 900 mm stroke, 40 mm adjust window, G3/8 port, and mountings. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N at 0.7 MPa, and 4523 N at 0.9 MPa. The external stop screw window is 40 mm, allowing an extend range of 860-900 mm. The stop sets end position and is not a load lock; use an external rod lock for held loads.
Related AirTAC SAI Cylinders
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