Airtac SCJ32 Standard Cylinder SCJ32X75-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X75-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: 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
About the Airtac SCJ32 Standard Cylinder SCJ32X75-20
The SCJ32X75-20 is a 32 mm bore double-acting single-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. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa, moving loads at speeds from 30 to 800 mm/s, with a 21 mm air cushion at each end to decelerate the piston quietly.
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 (single 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 rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. 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?
Choose the SCJ32X75-20 when you need a compact, adjustable-stroke cylinder for light positioning or clamping tasks—its 402 N push force at 0.5 MPa suits small transfer gates, diverters, or pressing fixtures. If the force is marginal, stepping up to the 40 mm bore (SCJ40, 628 N push at 0.5 MPa) provides a significant boost without a large footprint increase. 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
At 0.5 MPa the cylinder delivers 402 N pushing and 345 N pulling. 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 drop-in.
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