Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 750mm 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.
- BoreØ50 mm
- Stroke750 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAIJ50 Adjustable Cylinder SAIJ50BX750-20
The AirTAC SAIJ50X750-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 982N push force at 0.5 MPa and uses a 20mm adjustment screw to trim the effective travel, yielding a precise 730-750mm usable window for commissioning. This model is built with a SUS304 stainless steel rod and PT tapered ports.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Because the 750mm stroke is long, the 16mm rod thread and 20mm rod diameter require external guide support to handle potential side loads. The rear adjuster acts strictly as a travel stop for end-position tuning, not a lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 750 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×750 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX750-20 Is Used
Product Changeover
Dial in the 730-750mm travel window during line changeovers to accommodate different product sizes without replacing the cylinder.
End-Position Tuning
Fine-tune the retract stop at commissioning to perfect machine timing, avoiding the need to bolt on external physical stops.
Extended Stroke Routing
Handle long-travel pushing tasks on a conveyor, relying on the 20mm rod and external guides to manage the 750mm span safely.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX750-20 the Right Cylinder?
Choose this 50mm bore when you need 982N of push force at 0.5 MPa, stepping up from a 40mm bore that provides 628N. The adjustable stroke is ideal for product changeovers, allowing you to fine-tune the end position without adding external stops or swapping a fixed-stroke SAI cylinder.
For any stroke of 750mm, always use an external guide to manage side loads. Remember that the rear adjuster only sets the travel end and does not hold the load without live air; for true load-holding, select a SAIL or BSAI cylinder. This SKU uses PT ports and omits the FB, CA, CB, and CR mounting options, utilizing Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50 Adjustable Cylinder SAIJ50BX750-20 FAQ
At 0.5 MPa, this 50mm bore cylinder delivers 982N of push force and 825N of pull force. It can reach up to 1767N push force at 0.7 MPa.
The rear adjuster screw lets you shorten the 750mm nominal stroke by up to 20mm, creating a 730-750mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load.
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