This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X50-50TC — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X50-50TC 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 SIJ80X50-50TC
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X50-50TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X50-50TC
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50TC
The AirTAC SIJ80X50-50TC is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, now discontinued and directly replaced by the SAIJ80X50-50TC. It features an 80mm bore, a 50mm nominal stroke, and a G3/8 port. An external stop screw lets you trim the extend stroke by up to 50mm on-site, setting the exact end position without needing custom machining. The stop screw dictates end position only; it is not a load lock, and the cylinder will drift on air loss.
At 0.5MPa it delivers 2513N push and 2268N pull force, peaking at 4523N push at 0.9MPa. The SAIJ drop-in retains the ISO 15552 mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure. For sizing, a safe working load is roughly 1508N (60% of the 0.5MPa push), yielding a 128kg vertical lift capacity with a 2:1 margin. This non-magnetic SKU cannot accept a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50TC Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X50-50TC |
| Bore size | Ø80 mm |
| Stroke | 50 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 SAIJ80X50-50TC 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 SAIJ80X50-50TC 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 SIJ80X50-50TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SIJ80X50-50TC Is Used
Adjustable End-Stop Clamping
Clamping parts of varying heights where the extend stroke must be precisely trimmed on-site by up to 50mm to prevent deformation without re-engineering the fixture.
Variable-Length Rejecter Arm
Pushing diverter arms on a conveyor where the reject distance requires field tuning, utilizing the TC mount for trunnion pivoting and the 50mm adjust window for exact positioning.
Tuned Pallet Positioning
Indexing pallets to a final stop location that needs micro-adjustments during setup, using the 2513N push force at 0.5MPa to shift loads safely within the 1508N working load limit.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X50-50TC with the SAIJ80X50-50TC
To replace the discontinued SIJ80X50-50TC, order the drop-in SAIJ80X50-50TC, which matches the 80mm bore, 50mm stroke, 50mm adjust window, G3/8 port, and TC mounting interface. When sizing both ways, the neighboring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N push at 0.5MPa. The 50mm adjust window allows trimming the extend stroke down to zero on-site, which is ideal when final stop position must be tuned during machine commissioning. The TC mount provides a trunnion-style pivot for angular movement. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B or DS1-B sensors; if position detection is required, select a -S model. Since the nominal stroke is 50mm (under 300mm), side-load rod deflection is minimal. For any load-holding requirements, note that air cushions only decelerate near stroke end; use an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant, as the adjustable stop is not a brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X50-50TC
- ✓ 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 SIJ80X50-50TC FAQ
Yes, the SIJ80X50-50TC is discontinued. The exact drop-in replacement is the SAIJ80X50-50TC, which shares the identical ISO 15552 interface, 80mm bore, 50mm stroke, 50mm adjust window, G3/8 port, and TC mounting. The SAIJ family also features an upgraded piston seal for lower start-up pressure.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa. The external stop screw has a 50mm adjust window, allowing you to shorten the extend stroke by up to 50mm on-site. The stop sets end position only and is not a load lock; use an external rod lock or SAIL variant for load holding.
Related AirTAC SAI Cylinders
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