Airtac SCJ32 Standard Cylinder SCJ32X70-50S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X70-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø32mm bore, 70mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke70 mm
- Stroke adjust-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X70-50S
The SCJ32X70-50S is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw, allowing the stroke end position to be fine-tuned within a 50 mm range without replacing the unit. With a 32 mm bore and 12 mm rod, it delivers 402 N of push force at 0.5 MPa, making it a compact yet capable actuator for light industrial tasks.
This model features a built-in magnet (-S suffix), enabling direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. The standard PT1/8 ports and M10x1.25 rod thread ensure straightforward integration, while the 21 mm air cushion provides smooth deceleration at the end of travel.
Airtac SCJ32 Standard Cylinder SCJ32X70-50S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X70-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 70 mm |
| Stroke adjustment | Up to 50 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 SCJ32X70-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ32X70-50S Is Used
Commissioning & Setup
Ideal for machine builders who need to dial in the exact stroke during initial commissioning. The 50 mm adjustment range allows for precise positioning of tooling or stops without fabricating custom spacers.
Wear Compensation
In high-cycle pick-and-place systems, the adjustable stroke can compensate for gripper finger or pad wear over time, maintaining consistent contact pressure and part handling without immediate maintenance intervention.
Small Part Sorting
Used on diverters or gates in small-part conveyor lines. The stroke can be quickly adjusted to accommodate different product widths or lane configurations during a batch changeover.
Is the Airtac SCJ32 Standard Cylinder SCJ32X70-50S the Right Cylinder?
Choose the SCJ32 when you need a field-adjustable stroke in a compact 32 mm bore package. If your application requires more force, stepping up to the 40 mm bore SCJ40 provides 628 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, more cost-effective alternative. This SCJ32X70-50S is a direct dimensional replacement only for another AirTAC SCJ32 adjustable-stroke cylinder with a 70 mm nominal stroke, 50 mm adjust range, PT ports, basic mounting, and a magnet.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ32X70-50S FAQ
At the standard operating pressure of 0.5 MPa, this 32 mm bore cylinder generates 402 N of push force. The pull force is 345 N due to the 12 mm piston rod reducing the effective piston area on the retract stroke.
No. The SCJ32X70-50S is a standard double-acting cylinder and will not hold its position if air pressure is lost or the valve is centered. The air cushion only decelerates the piston at stroke end, and the adjusting screw only sets the end position. For load holding, an external pilot-operated check valve or a mechanical rod lock is required.
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