Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50
The AirTAC SAIJ80X125-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 75-125 mm, allowing you to dial back the 125 mm nominal stroke by up to 50 mm during commissioning. This 80 mm bore delivers 2513 N of pull force at 0.5 MPa and up to 4523 N at 0.9 MPa, making it suitable for heavy positioning tasks.
Equipped with a 25 mm carbon steel rod and M20x1.5 rod thread, it handles higher side loads than smaller bores. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set supports Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear stopper and variable air cushions decelerate the load but do not hold it without live air; for position holding, use SAIL or BSAI types.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 Is Used
Machine Changeover
Dial in the 75-125 mm travel window during product size changeovers to set new end positions rapidly without replacing hardware.
Fixture Positioning
Leverage the 4523 N push force at 0.9 MPa to move heavy clamps into exact final locations using the rear stopper for repeatable fine-tuning.
Assembly Station Setup
Use the 50 mm adjustment screw to compensate for mechanical wear or tooling variations during initial station commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks the thrust for your fixture, but stepping up to a 100 mm bore (3927 N at 0.5 MPa) would be excessive overkill. The 50 mm adjustment range is ideal for product size changeovers on a line, letting you set variable end stops without swapping the cylinder or bolting on external stops.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 125 mm stroke, PT tapered port, and the chosen mounting. Because the stroke is under 300 mm, side-load stress is moderate, but long unsupported loads still require an external guide. For load-holding without live pressure, select a SAIL or BSAI model instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50 FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster acts as a mechanical stop that trims the effective travel. For this model, it creates a usable stroke window of 75-125 mm, allowing you to shorten the nominal 125 mm stroke by up to 50 mm without moving the cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.