Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 900mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke900 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20
The AirTAC SAIJ32X900-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 20mm adjustment range, allowing you to dial the effective travel down from the 900mm nominal stroke to an 880mm minimum. This fine-tuning happens directly at the rear stopper without swapping the cylinder or adding external stops. In the 32mm bore class, it delivers 402N of push force and 345N of pull force at 0.5MPa, operating at speeds of 30-800mm/s.
This specific SKU is configured with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The barrel is an extruded aluminum profile with sensor grooves on both sides, and ports are PT (tapered) G1/8. The 900mm stroke approaches the 1000mm maximum standard limit for this bore, meaning the 12mm rod and M10x1.25 thread will experience leverage forces that require external guiding to prevent premature wear.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×900 | 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 Adjustable Cylinder SAIJ32 SAIJ32AX900-20 Is Used
Long-Stroke Reciprocating Feed
Dial in the exact 880-900mm retraction distance for a long-traverse transfer unit, allowing precise end-stop tuning during machine commissioning without external shims.
Product Size Changeover
Adapt a packaging line to slight variations in carton length by trimming up to 20mm off the nominal 900mm stroke at the rear stopper during format changes.
Extended Reach Positioning
Move a lightweight gripper across a 900mm span where the final 20mm of travel must be micro-adjusted to meet a hard mechanical stop or sensor target.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20 the Right Cylinder?
Choose this 32mm bore model when your application requires 402N push force at 0.5MPa and needs exact end-position tuning over a long 880-900mm travel window. If your machine needs less force and a shorter stroke, stepping down to a 25mm bore (if available) saves space, while stepping up to a 40mm bore yields 628N push force for heavier payloads. The adjustable stroke is ideal for product changeovers where the exact retraction point varies by 20mm or less, unlike a fixed SAI cylinder that locks you to a single dimension.
Because the stroke is 900mm, the unsupported rod length is substantial; you must use an external guide rail to handle side loads and prevent rod binding. Remember that the rear adjuster is a travel stop, not a lock. If the machine loses air pressure, this cylinder cannot hold its load in place. For true fail-safe load holding without live air, select an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder instead. This SAIJ model uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 Adjustable Cylinder SAIJ32 SAIJ32AX900-20 FAQ
At 0.5MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 82kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 900mm down to 880mm. It sets the travel end and works with the air cushion for deceleration, but it does not lock the load in place without live air pressure.
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