Airtac SCJ32 Standard Cylinder SCJ32X70-30S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X70-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 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-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X70-30S
The SCJ32X70-30S brings field-adjustable stroke control to compact 32 mm bore applications, delivering 402 N of push force at 0.5 MPa. Its rear-cap adjusting screw offers a 30 mm stroke-end reduction range, letting you fine-tune the 70 mm nominal stroke during commissioning or format changes without swapping the cylinder.
This model includes a built-in magnet (-S), so CMSG/DMSG/EMSG sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The 12 mm piston rod and PT1/8 ports keep the envelope small, while the adjustable air cushion decelerates the load smoothly within a 21 mm cushion zone.
Airtac SCJ32 Standard Cylinder SCJ32X70-30S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X70-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 70 mm |
| Stroke adjustment | Up to 30 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 SCJ32X70-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ32X70-30S Is Used
Commissioning & Setup
Fine-tune the actuator end-stop on a new packaging machine without mechanical rework. The 30 mm adjustment range allows rapid trial-and-error positioning during initial line bring-up.
Wear Take-Up
Compensate for gradual tooling or gripper wear in a pick-and-place cell by slightly shortening the stroke end, maintaining precise part engagement over thousands of cycles.
Small-Part Diverting
Adjust the pusher stroke on a mini diverter station for different product widths. The built-in magnet enables sensor feedback to confirm each divert cycle.
Is the Airtac SCJ32 Standard Cylinder SCJ32X70-30S the Right Cylinder?
Choose the SCJ32X70-30S when you need to dial in a precise stroke end on a 32 mm bore platform. If your force requirement grows, stepping up to a 40 mm bore SCJ provides 628 N of push at the same 0.5 MPa. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, lower-cost alternative. This unit replaces any AirTAC SCJ32 adjustable-stroke cylinder with a 70 mm nominal stroke, 30 mm adjust range, PT ports, and a built-in magnet.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ32X70-30S FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum push force at the 0.9 MPa operating limit is 724 N. Because this is a single-rod cylinder, push force is always greater than pull force.
Yes, if the mounting pattern and port size match. The SCJ32X70-30S shares the same bore, rod, and port dimensions as a standard SC32, but adds a rear adjusting screw that makes the overall body length slightly longer (A dimension 182 mm). Ensure you have clearance behind the rear cap for the screw and lock nut.
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