Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 125mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50
The AirTAC SAIJ160X125-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel. With a 125 mm nominal stroke and a 50 mm adjustment range, it provides a usable travel window of 75 to 125 mm. This bore size delivers substantial thrust, generating 18095 N of push force at 0.9 MPa and 14074 N at 0.7 MPa. The piston rod is carbon steel with an M36x2 thread, paired with 50 mm cushions at both ends to absorb kinetic energy.
Because it is an extruded aluminum profile cylinder, it integrates sensor grooves on both sides for position feedback. The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning or product changeover, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous air, an external rod lock or related types like the SAIL or BSAI cylinders are required.
Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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, 50 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | 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 SAIJ160 Adjustable Cylinder SAIJ160X125-50 Is Used
Heavy Machinery Setup
Dial in the exact 75-125 mm end-stop during heavy machinery commissioning to perfect positioning without machining external stops.
Product Changeover
Quickly adjust the travel window on a production line when changing product sizes, utilizing the 50 mm trim range for flexibility.
Press End-Tuning
Fine-tune the stroke end for pressing applications requiring up to 18095 N of push force, ensuring precise contact without over-travel.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-50 the Right Cylinder?
Choose this 160 mm bore when you need higher force than the 125 mm bore, which provides 11045 N of push force at 0.9 MPa. The adjustable stroke is ideal for machine setups requiring variable end-stops without swapping the entire cylinder or adding external stops. It operates at a speed range of 30-500 mm/s and uses a PT G3/4 port. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
When replacing an ISO 15552 cylinder, match the 160 mm bore, 125 mm stroke, 50 mm adjustment, and PT G3/4 port. Because the stroke is 125 mm, side-load is less of a concern, but the heavy M36x2 carbon steel rod still handles robust mechanics. Remember that the rear adjuster is a travel stop, not a lock.
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 SAIJ160 Adjustable Cylinder SAIJ160X125-50 FAQ
At an operating pressure of 0.9 MPa, this 160 mm bore cylinder generates a push force of 18095 N and a pull force of 9425 N. The maximum allowable operating pressure is 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 125 mm nominal stroke by up to 50 mm, creating a usable travel window of 75 to 125 mm. It is a travel stop for end-position tuning, not a lock, and does not hold the load without live air pressure.
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