Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX210-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 210mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke210 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75
The AirTAC SAIJ40X210-75 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and a 210mm stroke. A rear-mounted adjusting screw allows you to shorten the forward travel by up to 75mm, creating a precise 135 to 210mm usable window. This on-machine tunability eliminates the need to swap hardware during product changeovers.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear stopper and variable air cushions safely decelerate the load at travel ends, neither component acts as a mechanical lock; the cylinder requires live air to maintain its position. For load-holding without pressure, consider an external pilot-operated check valve or the related SAIL lock cylinder.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 210 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×210 | 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 SAIJ40AX210-75 Is Used
Product Changeovers
Quickly reconfigure the end-of-stroke position for different packaging sizes without replacing the cylinder or adding mechanical spacers.
Machine Setup
Fine-tune the 135-210mm travel window during commissioning to achieve exact positioning before tightening the rear stopper.
Variable End Stops
Ideal for assembly stations where the rear stopper must be occasionally backed off to accommodate varying part lengths.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX210-75 the Right Cylinder?
The generous 75mm adjustment range is ideal for prototyping or production lines running multiple product sizes, allowing you to dial in the exact end position without adding external stops. When specifying a replacement, verify the 210mm stroke, 75mm adjustment, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 210mm stroke creates an extended lever arm, ensure the 16mm rod and M12x1.25 rod thread are protected against excessive side loading by utilizing an external guide. This cylinder operates at speeds of 30-800mm/s.
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 SAIJ40AX210-75 FAQ
At a maximum 1.0MPa, it can deliver up to 128kgf.
The rear adjuster acts as a mechanical stop that trims the effective travel back from the 210mm nominal stroke, giving a usable range of 135-210mm. It only sets the end position and does not lock the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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