Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S
The AirTAC SAIJ160X275-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 275 mm travel by up to 50 mm. This creates a precise 225-275 mm usable stroke window, ideal for fine-tuning end positions during commissioning without swapping out the entire actuator. Belonging to the 160 mm bore class, it outputs 14074 N of push force at 0.7 MPa and features a robust 40 mm SUS304 stainless steel rod.
This variant includes a magnet for position sensing and uses a PT tapered port. The extruded aluminum barrel retains standard sensor grooves on both sides for CMSE reed and DMSE electronic switches. Because the rear adjuster acts purely as a mechanical stop and does not lock the load, you must maintain live air pressure during operation or integrate an external rod lock for load-holding.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 275 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×275 | 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 SAIJ160 Adjustable Cylinder SAIJ160BX275-50S Is Used
Heavy Machinery Setup
Fine-tune the 225-275 mm travel window during heavy equipment commissioning to achieve exact pressing positions without machining external stoppers.
Product Size Changeovers
Quickly adjust the retract end-stop on packaging lines to accommodate different box or pallet sizes without changing the cylinder.
Variable End-Stop Actuation
Dial in the precise 50 mm trim window on automated assembly stations to compensate for mechanical wear or tooling variations.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX275-50S the Right Cylinder?
Selecting this 160 mm bore actuator makes sense when your application requires the substantial thrust of a larger cylinder alongside variable end-stop positioning. If you need slightly less force, stepping down to a 125 mm bore yields 8590 N of push at 0.7 MPa, but the 160 mm class provides the necessary margin for heavier machinery. The adjustable 225-275 mm window is perfect for product changeovers, whereas a fixed-stroke SAI cylinder would require physical shimming or replacement to alter the travel end.
When replacing an ISO 15552 cylinder, match the 160 mm bore, 275 mm nominal stroke, 50 mm adjustment, PT port, and the -S magnet requirement. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 275 mm stroke is relatively long for this large bore, ensure adequate external guidance to prevent excessive side-loading on the 40 mm rod.
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 SAIJ160 Adjustable Cylinder SAIJ160BX275-50S FAQ
At a 0.7 MPa operating pressure, this 160 mm bore cylinder provides 14074 N of push force and 9425 N of pull force. It can reach a maximum push force of 18095 N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that shortens the 275 mm nominal stroke by up to 50 mm, creating a 225-275 mm usable travel window. It requires live air to hold position, as the adjuster and air cushions do not function as a lock or brake.
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