Airtac SCJ32 Standard Cylinder SCJ32X85-75S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X85-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø32mm bore, 85mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke85 mm
- Stroke adjust-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X85-75S
The SCJ32X85-75S is a compact 32 mm bore double-acting single-rod cylinder that lets you fine-tune the stroke end position by up to 75 mm via the rear adjusting screw, without swapping the unit. It delivers 402 N of push force at 0.5 MPa and 724 N at the maximum operating pressure of 0.9 MPa, making it a precise actuator for light-duty positioning tasks.
This model includes a built-in magnet (-S suffix) so standard CMSG, DMSG, or EMSG reed and solid-state sensors can be clamped directly onto the tie-rod barrel for end-of-stroke detection. The 12 mm diameter piston rod, PT1/8 port, and 21 mm air cushion help it handle speeds of 30-800 mm/s. The SCJ body length A is 182 mm, slightly longer than a fixed-stroke SC to house the adjustment mechanism.
Airtac SCJ32 Standard Cylinder SCJ32X85-75S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X85-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 85 mm |
| Stroke adjustment | Up to 75 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 SCJ32X85-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×85 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ32X85-75S Is Used
Commissioning Fine-Tuning
During machine setup, the 75 mm adjustment range lets technicians precisely set the push stroke end for a pick-and-place arm without machining external hard stops.
Wear Take-Up on Stops
On a small indexing conveyor, the screw can be adjusted to compensate for wear on a rubber stop bumper, maintaining accurate part positioning over time.
Format Changeover
When a labeling machine switches between container sizes, the stroke end is quickly re-set with the rear screw to match the new label application point.
Is the Airtac SCJ32 Standard Cylinder SCJ32X85-75S the Right Cylinder?
Choose the SCJ32 when you need to dial in a precise stroke end on the machine, such as during commissioning or for format changes. If 402 N of push force at 0.5 MPa is insufficient, stepping up to the SCJ40 delivers 628 N. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 is a simpler, more cost-effective alternative. This unit's 85 mm nominal stroke is well within the 1000 mm maximum standard stroke for the 32 mm bore. A direct replacement must match the 32 mm bore, 85 mm nominal stroke, 75 mm adjust range, PT1/8 port, and the -S magnet option.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ32X85-75S FAQ
A screw in the rear cap limits how far the piston can retract. Turning it changes the stroke end position within a 75 mm range, but the 85 mm nominal stroke is the maximum. It does not adjust the extend position or the cylinder's force.
At the standard 0.5 MPa operating pressure, the push force is 402 N and the pull force is 345 N. At the maximum 0.9 MPa, push force reaches 724 N. The pull force is lower because the 12 mm rod reduces the effective piston area on the return stroke.
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