Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S
The AirTAC SAIJ40X700-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the effective travel by up to 30 mm. This creates a precise 670-700 mm usable travel window, allowing you to fine-tune the retract end-position at commissioning without swapping out the cylinder or adding external stops. Delivering 879 N of push force at 0.7 MPa, it handles mid-range actuation tasks reliably.
This specific SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and because this model includes a magnet (-S), it works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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 SAIJ40BX700-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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 SAIJ40BX700-30S Is Used
Machine Changeover
Dial in the 670-700 mm retract position during product size transitions without swapping cylinders or repositioning external hard stops.
Variable End-Stop Diverting
Adjust the stroke length on the fly to accommodate different package sizes on a packaging line, fine-tuning the pusher distance at commissioning.
Long-Stroke Positioning
Leverage the 700 mm travel with a 30 mm trim window for extended reach operations, using the SUS304 rod in mildly corrosive environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-30S the Right Cylinder?
Choose this 40 mm bore cylinder when you need the exact end-positioning flexibility of the SAIJ series combined with a long 700 mm stroke. If your application requires less force, stepping down to a 32 mm bore yields 563 N at 0.7 MPa, while stepping up to a 50 mm bore provides 1374 N for heavier loads. The adjustable stroke is ideal for machine setups that undergo frequent product changeovers, as you can modify the end-stop on the fly without replacing hardware.
Because the stroke is 700 mm, the 16 mm rod and M12x1.25 rod thread will experience amplified side loads if the tooling is unsupported; an external guide rail is strongly recommended to prevent binding. This cylinder uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts. For load-holding without live air pressure, note that this cylinder's adjuster is not a lock—consider an AirTAC SAIL or BSAI series cylinder instead. To replace an ISO 15552 cylinder, match the 40 mm bore, 700 mm stroke, 30 mm adjustment, PT port, and -S magnet.
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 SAIJ40BX700-30S FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder generates 879 N of push force and 528 N of pull force. The maximum thrust is 128 kgf at 1.0 MPa.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the nominal 700 mm stroke by up to 30 mm. This creates a usable travel window of 670-700 mm for fine-tuning the end position at commissioning, though it does not lock the load without live air pressure.
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 SAIJ40BX700-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.