Airtac SCJ32 Standard Cylinder SCJ32X50-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X50-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø32mm bore, 50mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke50 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X50-40S
The SCJ32X50-40 is a 32 mm bore double-acting single-rod cylinder with a 40 mm rear adjusting screw, letting you fine-tune the stroke end position without removing the cylinder from the machine. At 0.5 MPa it delivers 402 N push and 345 N pull, making it a compact workhorse for light clamping, sorting, and diverting tasks where the final stop point needs to be dialled in during commissioning.
This model includes a built-in magnet (-S suffix), so standard CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for end-of-stroke or mid-stroke position feedback. The 12 mm rod runs in a 21 mm air cushion, and the PT1/8 port keeps the envelope small. Body length A(SCJ) is 182 mm, slightly longer than a fixed-stroke SC of the same bore to house the adjusting mechanism.
Airtac SCJ32 Standard Cylinder SCJ32X50-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X50-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 40 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 SCJ32X50-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×50 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ32X50-40S Is Used
Commissioning & Setup
Dial in the exact push-out distance during machine build without cutting rods or adding shims—the 40 mm screw lets you fine-tune the end stop in seconds.
Small-Part Diverting
Adjust the stroke end to match different lane widths on a packaging conveyor; the built-in magnet confirms the cylinder has fully retracted or extended.
Wear Take-Up
Compensate for pad or gripper wear over time by advancing the stroke end slightly, maintaining consistent contact force without replacing the tooling.
Is the Airtac SCJ32 Standard Cylinder SCJ32X50-40S the Right Cylinder?
Choose the SCJ32 when you need to tweak the stroke end by up to 40 mm on the fly—ideal for format changeovers or taking up wear on a mechanical stop. If your force requirement grows, the next step up is the 40 mm bore (628 N push at 0.5 MPa); if you never need to adjust the stroke, the simpler SC32 fixed-stroke cylinder is a lighter, lower-cost alternative. For replacement, match the bore (32 mm), nominal stroke (50 mm), adjust range (-40), PT port thread, and the -S magnet option. This cylinder uses the basic mounting style; if you later need a pivot mount, the TC centre trunnion with TCM1 bracket is available for the SCJ32.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ32X50-40S FAQ
At 0.5 MPa the push force is 402 N and the pull force is 345 N. At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. The push force is higher than the pull force because the single rod reduces the piston area on the return side.
Yes, if you need the 40 mm adjustable stroke feature. The SCJ32 shares the same bore, rod diameter (12 mm), port size (PT1/8), and mounting accessories as the SC32. Ensure the slightly longer body length A(SCJ) of 182 mm fits your space, and order the same magnet and mounting options to match your existing setup.
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