Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 125mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100
The AirTAC SAIJ50X125-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that provides a usable travel window of 25 to 125 mm. Delivering 982 N of push force and 825 N of pull force at 0.5 MPa, it is built to handle mid-range actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position monitoring.
This specific SKU utilizes a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The generous 100 mm adjustment range allows operators to dial back the stroke significantly for product size changeovers without physically swapping the cylinder or adding external stops. The rear adjuster acts purely as a travel stop to fine-tune the end position, not as a load-holding lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX125-100 Is Used
Product Changeovers
Quickly adapt to varying package sizes on a conveyor line by dialing the stroke back from 125 mm to 25 mm without changing the cylinder hardware.
Fixture Positioning
Fine-tune the exact end-of-stroke stopping point during machine commissioning to achieve precise clamping or forming operations.
Test Equipment
Leverage the SUS304 stainless steel rod and wide 100 mm travel adjustment to test actuation forces across different sample sizes in a laboratory setting.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX125-100 the Right Cylinder?
Choose this 50 mm bore when your application requires a robust mid-range force, such as the 982 N push at 0.5 MPa, but with maximum flexibility for varying travel distances. If your setup needs less force, stepping down to a 40 mm bore yields 628 N; if you need substantially more power, the 63 mm bore provides 1559 N. The 100 mm adjustment range makes this cylinder ideal for packaging lines or test fixtures where product dimensions frequently change. For any stroke at or above 300 mm, an external guide is recommended to support the rod against side loads, though this 125 mm stroke is short enough to manage independently.
Because the rear adjuster only sets the travel end and relies on live air, this plain SAIJ model cannot hold a load without continuous pressure. If your fixture requires true fail-safe load holding, select the SAIL (air-released lock) or BSAI (clamp-lock) series instead. To match this cylinder exactly for an ISO 15552 replacement, specify a 50 mm bore, 125 mm stroke, 100 mm adjustment, PT ports, SUS304 rod, no magnet, and a mounting choice from Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ50 Adjustable Cylinder SAIJ50BX125-100 FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its 125 mm nominal length down to as little as 25 mm. It sets the travel end for commissioning or changeovers but does not lock the load without live air pressure.
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