Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 145mm 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
- Stroke145 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 SAIJ50BX145-30
The AirTAC SAIJ50X145-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel within a 115-145 mm window. It delivers a robust 982N push force at 0.5 MPa, making it well-suited for medium-duty handling tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This specific configuration incorporates a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning; it does not lock the load without live air pressure. For applications requiring position holding without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 145 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 SAIJ50BX145-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×145 | 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 SAIJ50BX145-30 Is Used
Machine Setup & Changeover
Dial in the exact retract distance within the 115-145mm window during line changeovers, eliminating the downtime of physically swapping cylinders for different product sizes.
Variable End-Stop Positioning
Use the rear mechanical stopper to precisely set the end-of-stroke position for machining or pressing tasks, accommodating material tolerances on the fly.
Corrosive Environment Handling
Leverage the SUS304 stainless steel rod to actuate tooling and fixtures in washdown or mildly corrosive industrial environments where standard carbon steel rods would fail.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30 the Right Cylinder?
Choose this 50mm bore adjustable-stroke cylinder when your setup requires precise end-position tuning without swapping out physical components during product changeovers. If your application demands less force, stepping down to a 40mm bore yields 628N of push force at 0.5 MPa, while moving up to a 63mm bore provides 1559N for heavier loads. The adjustable nature of this SKU allows you to trim the 145mm nominal stroke back by up to 30mm on the retract end, replacing the need for external stopper blocks.
When replacing an ISO 15552 cylinder, match the 50mm bore, 145mm stroke, 30mm adjustment range, PT port threads, and SUS304 rod material. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Because this is a 145mm stroke, the 20mm rod diameter handles standard side loads adequately, though longer unsupported strokes would require an external guide.
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 SAIJ50BX145-30 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. It can deliver up to 1767N of push force at 0.9 MPa.
The rear adjuster screw allows you to mechanically shorten the 145mm nominal stroke by up to 30mm, creating a usable travel window of 115-145mm. The adjuster acts as a travel stop and does not function as a lock to hold 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50BX145-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.