Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S
The AirTAC SAIJ125X700-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N push force at 0.5 MPa, utilizing a 32mm SUS420J2 stainless steel rod and PT G1/2 tapered ports. The built-in -100 mm adjustment mechanism creates a 600-700mm usable travel window, allowing you to fine-tune the retract end position at commissioning without adding external stops.
This extruded aluminum profile cylinder includes a -S magnet for CMSE reed and DMSE electronic sensors, fitting neatly into sensor grooves on both sides. The 700mm stroke on a 125mm bore approaches the upper end of practical travel, so the 32mm rod and M27x2 thread provide necessary rigidity, though an external guide is still recommended for heavy side loads. It supports speeds of 30-500 mm/s and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB and CA options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125AX700-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAIJ125AX700-100S Is Used
Variable End-Stop Positioning
Dial in the retract position within the 600-700mm window to accommodate different material thicknesses on the fly without physically remounting the cylinder.
Machine Changeover Setup
Speed up product line changeovers by turning the rear screw to meet new dimensional requirements instantly, avoiding the downtime of swapping out a fixed-stroke SAI cylinder.
Heavy-Duty Press Tuning
Leverage the 6136N force at 0.5 MPa for pressing applications, using the 100mm adjustment range to precisely set the bottoming depth during initial commissioning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100S the Right Cylinder?
Choose this 125mm bore when 100mm (which offers 3927N at 0.5 MPa) lacks sufficient push power, but stepping up to 160mm (10053N) would be overkill. The adjustable 600-700mm window is ideal for lines running mixed product batches requiring variable end-stops. For load-holding without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you must use an external rod lock or pilot-operated check valve.
To match this ISO 15552 cylinder for a replacement, verify the 125mm bore, 700mm stroke, 100mm adjustment range, PT G1/2 port, and -S magnet. Because the 700mm stroke is substantial, always pair it with an external guide to prevent rod bending under side-load conditions.
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 SAIJ125AX700-100S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster acts as an external stop that lets you trim the effective travel back by up to 100mm from the nominal 700mm stroke, creating a 600-700mm usable window. It only sets the travel end and does not hold the load without live air pressure.
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