Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 600mm 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.
- BoreØ40 mm
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S
The AirTAC SAIJ40X600-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 600 mm travel by up to 40 mm. This yields a precise 560-600 mm usable positioning window, ideal for fine-tuning end stops during commissioning without swapping out the unit. It delivers a solid 628 N push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
This variant includes a PT tapered port and an integrated magnet (-S) compatible with AirTAC CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel provides dual-sided sensor grooves, and the adjustable rear stopper functions purely as a travel limiter—it does not lock the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX600-40S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point from 560 to 600 mm during machine setup to perfect product handling without adding external physical stops.
Product Changeover
Quickly adjust the stroke length on the line when switching product sizes, using the rear screw to fine-tune the end position on the fly.
Extended Transfer Positioning
Use the 600 mm travel to push parts across a conveyor, relying on the rear adjuster to trim the final stopping point for delicate items.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-40S the Right Cylinder?
Choose this 40 mm bore when your application requires a 560-600 mm stroke window and roughly 628 N of push force at 0.5 MPa. If your setup demands less force, stepping down to a 32 mm bore yields 402 N, whereas a 50 mm bore provides 982 N for heavier loads. The adjustable stroke is perfect for product changeovers, allowing you to shift the end position on the fly instead of installing a fixed-stroke SAI cylinder.
Because the nominal stroke is 600 mm, the M12x1.25 rod will experience amplified side-loading if the load is unsupported; an external guide is strongly recommended to prevent binding. For exact ISO 15552 replacement matching, verify the 40 mm bore, 600 mm stroke, 40 mm adjustment, PT G1/4 port, and the -S magnet. Remember that this cylinder uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits 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 SAIJ40 Adjustable Cylinder SAIJ40BX600-40S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 600 mm nominal stroke by up to 40 mm, creating a usable travel window of 560 to 600 mm for fine-tuning at commissioning.
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