This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X70-30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X70-30 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 SIJ80X70-30
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 70mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X70-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke70 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X70-30
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-30
The AirTAC SIJ80X70-30 is a discontinued double-acting, single-rod ISO 15552 adjustable-stroke cylinder with an 80 mm bore and a 70 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 40-70 mm window. This bore delivers 2513 N push and 2268 N pull at 0.5 MPa, features a 25 mm rod, M20x1.5 thread, and a fixed G3/8 port. The exact drop-in replacement is the SAIJ80X70-30, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting dimensions for direct reuse but upgrades the piston seal to two Y-shaped one-way elements 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), translating to a 128 kg vertical lift with a 2:1 margin. Note this SKU lacks a -S magnet so it cannot accept a sensor. The stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-30 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X70-30 |
| Bore size | Ø80 mm |
| Stroke | 70 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 SAIJ80X70-30 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 SAIJ80X70-30 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 SIJ80X70-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×70 | 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 SIJ80X70-30 Is Used
Press Fit Tuning
Light-duty assembly operations requiring precise endpoint adjustment to dial in a 40-70 mm press fit without machining custom spacers.
Variable Diverter Stroke
Package routing gates where the extend stop is field-tuned by up to 30 mm to accommodate changing box sizes on the fly.
Prototype End-Stop Setup
R&D tooling fixtures needing an adjustable hard stop to test multiple extend positions before finalizing a fixed-stroke design.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X70-30 with the SAIJ80X70-30
To replace the discontinued SIJ80X70-30, order the drop-in SAIJ80X70-30, which preserves the 80 mm bore, 70 mm nominal stroke, 30 mm adjust window, and G3/8 port. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N; choose based on your exact force requirement. Select the 30 mm adjust window if you need on-site tuning of the extend end-position within a 40-70 mm range. Mounting attachments (FA, LB, TC) interchange via the ISO 15552 interface. Because this SKU has no -S suffix, it cannot support a magnetic switch. For stroke lengths of 300 mm or greater, carefully verify side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X70-30
- ✓ 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 SIJ80X70-30 FAQ
Yes, the SIJ80X70-30 is discontinued. The exact drop-in replacement is the SAIJ80X70-30. It shares the identical ISO 15552 interface, 80 mm bore, 70 mm stroke, 30 mm adjust window, and G3/8 port, 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. The external stop screw provides a 30 mm adjustment window, allowing the 70 mm nominal extend stroke to be shortened to a minimum of 40 mm on-site. The stop sets the end position but does not lock the load.
Related AirTAC SAI Cylinders
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