Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S
The AirTAC SAIJ40X1000-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force at 0.5 MPa and features a 1000mm nominal stroke that can be fine-tuned down by 20mm, creating a precise 980-1000mm usable travel window. The SUS304 stainless steel rod provides excellent corrosion resistance, and the integrated magnet supports CMSE reed and DMSE electronic sensors.
Because the stroke extends to 1000mm, the 16mm rod and M12x1.25 thread require careful alignment to manage side loads; an external guide is recommended for unsupported lengths. This model uses PT tapered ports and retains the standard variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 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 SAIJ40BX1000-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×1000 | 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 SAIJ40BX1000-20S Is Used
Long-Stroke Conveyor Positioning
Fine-tune the 980-1000mm retraction point on extended conveyor routing arms to accommodate varying package sizes without repositioning the cylinder mount.
Machine Setup Changeover
Quickly adjust the end-stop by up to 20mm during product line changeovers, saving downtime by avoiding mechanical disassembly of fixed stops.
Extended Reach Actuation
Utilize the 1000mm stroke for large-format material handling, relying on the SUS304 rod for durability and the DMSE sensors for accurate end-position feedback.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S the Right Cylinder?
Choose this 40mm bore when an application requires moderate force (628N push at 0.5MPa) over a long distance. If your setup needs less force, stepping down to a 32mm bore yields 402N; if more force is required, a 50mm bore provides 982N. The adjustable stroke is selected over a fixed SAI cylinder when you need to dial in the exact end-of-travel position during commissioning or product changeover without adding external stopper blocks.
Note that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load without live air pressure. For load-holding requirements, consider an external pilot-operated check valve or a SAIL locking cylinder. This SAIJ variant is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20mm, providing a usable travel window of 980 to 1000mm. This lets you fine-tune the end position at commissioning without swapping the cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.