Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S
The AirTAC SAIJ125X200-100-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force at 0.5 MPa and provides a usable travel window of 100 to 200 mm, allowing you to dial back the nominal stroke by up to 100 mm during commissioning. This specific SKU includes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and a built-in magnet for CMSE reed and DMSE electronic sensors.
The rear adjustment screw acts purely as a mechanical stop to fine-tune end positions without swapping the cylinder or adding external stops. It is not a locking device; the variable air cushions at both ends manage deceleration, but live air pressure is required to hold the load. For applications needing true position holding without air, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 SAIJ125AX200-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SAIJ125AX200-100S Is Used
Variable End-Stop Tuning
Dial in precise retract positions from 100 to 200 mm during machine setup, accommodating different material lengths without changing hardware.
Product Changeover
Quickly adjust the effective stroke on a production line when switching to a new package size, using the rear screw to set the new endpoint.
Heavy-Duty Clamping
Leverage 6136N of thrust at 0.5 MPa to secure heavy workpieces, using the 100mm adjustment window to tune clamp depth for different parts.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX200-100S the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder (providing 2513N push force) is insufficient, but a 160mm bore (10053N) would be oversized. The 100mm adjustment range is ideal for machines processing variable product sizes, letting operators set new retract endpoints on the fly. The PT tapered ports and dual-side sensor grooves ensure straightforward integration.
When replacing an ISO 15552 cylinder, match the 125mm bore, 200mm stroke, 100mm adjustment, PT port thread, and -S magnet. Because the stroke is 200mm, side-load risks are moderate, but for any stroke of 300mm or more, an external guide is required to prevent rod binding. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ125AX200-100S FAQ
The rear adjuster lets you shorten the effective travel by up to 100 mm, creating a usable stroke window of 100 to 200 mm. It acts as a mechanical stop for end-position tuning, not a lock, so live air is still needed to hold the load.
At 0.5 MPa, it provides 6136N of push force and 5734N of pull force. The standard speed range for a 125mm bore is 30-500 mm/s, supported by PT tapered ports and 40mm cushioning.
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