Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX135-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ80 Adjustable Cylinder SAIJ80BX135-40S
The AirTAC SAIJ80X135-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel to any point within a 95-135 mm window. This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a -S magnet for position sensing.
The rear adjustment mechanism acts purely as a travel stop to set the retract end position and cannot hold a load without live air pressure. For load-holding requirements, a SAIL or BSAI series cylinder is recommended. This model uses a G3/8 port, offers an adjustable air cushion at both ends, and operates at speeds between 30 and 800 mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80BX135-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×135 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX135-40S Is Used
Machine Changeover
Dial in the exact retract distance within the 95-135 mm window during product size changes without swapping hardware.
Variable End-Stop Tuning
Perfect the final end-position at commissioning by turning the rear screw, avoiding the need for external stopper blocks.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for reliable performance in humid or washdown manufacturing environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX135-40S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder. Since the total stroke is 135 mm, side-load risks are minimal, but always ensure the load is guided to prevent rod binding.
When replacing an ISO 15552 cylinder, match these exact specifications: 80 mm bore, 135 mm nominal stroke, 40 mm adjustment range, PT tapered G3/8 ports, and a -S magnet for CMSE or DMSE sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets.
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 SAIJ80 Adjustable Cylinder SAIJ80BX135-40S FAQ
At a maximum 1.0 MPa, the push force reaches 513 kgf.
The rear adjuster screw lets you shorten the nominal 135 mm stroke by up to 40 mm, creating a usable travel window of 95 to 135 mm. The adjuster functions only as a travel stop and does not lock the load without continuous 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.
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Most inquiries answered within 7-8 hours.
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