Airtac SCJ32 Standard Cylinder SCJ32X75-20
The AirTAC SCJ32 Standard Cylinder SCJ32X75-20 is a genuine double-acting DOUBLE-ROD air cylinder whose rear rod carries the stroke ADJUSTER: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 75mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke75 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 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 SCJ32 Standard Cylinder SCJ32X75-20
The SCJ32X75-20 is a 32 mm bore double-acting double-rod cylinder that lets you fine-tune the stroke end position by up to 20 mm using the rear-cap adjusting screw, so the effective stroke is field-adjustable between 55 mm and the nominal 75 mm without changing the cylinder.
This model uses a 12 mm diameter piston rod with an M10x1.25 rod thread and PT1/8 port connections. The tie-rod body length (A dimension) is 182 mm, making it a compact choice for light automation tasks where commissioning trials or format changes demand quick stroke adjustment on the machine.
Airtac SCJ32 Standard Cylinder SCJ32X75-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X75-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (double rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The adjuster on the rear rod sets the stroke end position. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | — |
| Max (@1.0 MPa) | 70 kgf | |
SCJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SC push of the same bore. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac SCJ32 Standard Cylinder SCJ32X75-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | Nominal (maximum) stroke length in mm. |
| -20 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCJ32 Standard Cylinder SCJ32X75-20 Is Used
Commissioning & Setup
During machine commissioning, the 20 mm rear screw lets technicians dial in the exact stroke end for sensors, clamps, or stops without removing the cylinder or machining external hard stops.
Small Part Diverters
On packaging lines, the adjustable stroke allows quick changeover between product sizes—shorten the stroke for narrow cartons, extend it for wider ones, all with a simple screw adjustment.
Wear Take-Up in Fixtures
In repetitive pressing or clamping fixtures, the stroke-end screw can be advanced slightly over time to compensate for pad wear or material compression, maintaining consistent clamping force without replacing parts.
Is the Airtac SCJ32 Standard Cylinder SCJ32X75-20 the Right Cylinder?
For applications where the stroke is fixed and never needs field adjustment, the standard SC32X75 fixed-stroke cylinder is a simpler, cost-effective alternative.
A direct replacement must match the 32 mm bore, 75 mm nominal stroke, 20 mm adjustable range, PT1/8 ports, and basic mounting. For strokes of 300 mm or more, consider an external guide or a guided cylinder to protect the 12 mm rod from side-load bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ32 Standard Cylinder SCJ32X75-20 FAQ
The rear adjusting screw only sets the stroke end position within a 20 mm range; it does not alter the bore area or the output force. Force is determined solely by the 32 mm bore, the 12 mm rod, and the supplied air pressure.
Yes, provided the mounting and porting match. The SCJ body is slightly longer to house the adjusting mechanism (A=182 mm), so check the available space. The adjustable stroke is a bonus if you need to fine-tune the end position; if the stroke is permanently fixed, the standard SC32 is a simpler direct.
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