Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 850mm 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
- Stroke850 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S
The AirTAC SAIJ40X850-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 840 to 850 mm. It delivers 628 N of push force at 0.5 MPa, utilizing a G1/4 port and a 16 mm piston rod to handle mid-range pneumatic tasks with precision.
Equipped with a SUS304 stainless steel rod and a magnetic piston for CMSE or DMSE sensors, this unit is built for demanding environments. The PT tapered port threads ensure a tight pneumatic seal, while the extruded aluminum barrel maintains standard ISO 15552 mounting dimensions without relying on tie-rods.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 850 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 SAIJ40BX850-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×850 | 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 SAIJ40BX850-10S Is Used
Product Changeover Tuning
Dial in the exact 840 to 850 mm end position during packaging line format changes without swapping out the entire actuator.
Extended Reach Diverting
Pushes items across a wide conveyor belt, using the long 850 mm stroke and fine 10 mm adjustment to accommodate varying package depths.
Long-Stroke Assembly Press
Provides a consistent 628 N push force at 0.5 MPa for pressing components, with the rear stopper allowing precise depth calibration at commissioning.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX850-10S the Right Cylinder?
Choose this 40 mm bore when an application requires less force than the 50 mm bore (which provides 982 N push at 0.5 MPa) but more than the 32 mm option. The 10 mm rear adjustment screw is ideal for dialing in exact end positions during product changeovers without adding external stops. Because the stroke is 850 mm, an external guide is recommended to prevent excessive side-loading on the extended rod.
This cylinder uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. The rear adjuster acts strictly as a travel stop for deceleration and is not a lock; to hold a load securely without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ40BX850-10S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 850 mm down to 840 mm. This creates a 10 mm tuning window for fine-tuning the retract end position without needing external stops.
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 SAIJ40BX850-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.