Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100
The AirTAC SAIJ125X165-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 165 mm travel by up to 100 mm. This creates a highly flexible 65-165 mm usable stroke window for precise end-position tuning during commissioning. It delivers robust thrust, providing 6136 N of pull force and 8590 N of push force at 0.7 MPa.
This unit features a SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Note that the rear adjuster acts purely as a travel stop to set deceleration, not as a lock; it will not hold a load without continuous live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX165-100 Is Used
Product Changeover
Quickly reconfigure the 65-165 mm stroke window on packaging lines when switching to different carton or part sizes without changing the cylinder.
End-Stop Tuning
Fine-tune the exact retract position during machine commissioning to perfect part seating or pressing operations using the rear stopper.
Heavy Forming
Leverage the 8590 N push force at 0.7 MPa for light pressing or forming tasks where the exact bottoming position varies per batch.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100 the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (delivering 2268 N pull at 0.5 MPa) lacks the force needed to move your load, but a 160 mm bore is physically too large. The generous 100 mm adjustment range is perfect for machines handling frequent product-size changeovers, eliminating the need to physically swap cylinders or bolt on external stoppers. For load-holding requirements without live air, consider an AirTAC SAIL or BSAI series cylinder instead.
When replacing an ISO 15552 cylinder, verify the 125 mm bore, 165 mm stroke, 100 mm adjustment requirement, PT port threads, and your mounting choice. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR. Because the 165 mm stroke is relatively short for this bore, side-load stress is minimal, but external guiding remains recommended for heavy radial loads.
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 SAIJ125 Adjustable Cylinder SAIJ125AX165-100 FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw lets you trim the effective travel down from the 165 mm nominal stroke by up to 100 mm, yielding a usable 65-165 mm window. It functions as a mechanical stop and does not lock the load without air pressure.
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.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.