Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X70-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 70mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 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 SAIJ200 Adjustable Cylinder SAIJ200X70-20
The AirTAC SAIJ200X70-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers immense thrust, pushing 15708 N at 0.5 MPa and reaching 28274 N at 0.9 MPa. The integrated rear stopper screw allows you to fine-tune the effective travel, creating a 50-70 mm usable stroke window. This eliminates the need to swap cylinders or bolt on external stops during machine commissioning.
Equipped with a robust 40 mm carbon steel piston rod and a G3/4 PT tapered port, this unit handles heavy dynamics. The extruded aluminum barrel includes sensor grooves on both sides for flexible positioning of CMSE reed and DMSE electronic solid-state switches. The rear adjuster functions strictly as a travel stop to set the end position, not as a lock, meaning it cannot hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 70 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 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 SAIJ200 Adjustable Cylinder SAIJ200X70-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SAIJ200 Adjustable Cylinder SAIJ200X70-20 Is Used
Heavy Press Tuning
Dial in the exact 50-70 mm travel window during press setup to accommodate varying material thicknesses without changing the cylinder.
Product Changeover
Quickly adjust the retract end-position stop on a packaging line when switching to a different product size.
Machine Commissioning
Fine-tune the end-of-stroke position during initial machine build to perfect timing sequences without adding external physical stops.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X70-20 the Right Cylinder?
If your force requirements are lower, stepping down to a 160 mm bore provides 10053 N at 0.5 MPa, which may better suit medium-duty tasks. The adjustable stroke is ideal for setups needing variable end-stops or product changeovers, whereas a fixed-stroke SAI cylinder suits static operations.
For load-holding without continuous air pressure, this cylinder is insufficient since the rear adjuster and air cushions only decelerate travel. You would need an external rod lock, a pilot-operated check valve, or a specialized SAIL air-released lock or BSAI clamp-lock cylinder. To replace an ISO 15552 cylinder, match the 200 mm bore, 70 mm stroke, 20 mm adjustment, G3/4 PT port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting.
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 SAIJ200 Adjustable Cylinder SAIJ200X70-20 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the 70 mm nominal stroke by up to 20 mm, giving a usable travel window of 50-70 mm. It sets the end position but does not lock or hold the load without live air pressure.
At 0.9 MPa, the push force increases to 28274 N.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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