Airtac SCJ32 Standard Cylinder SCJ32X400-40
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X400-40 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, 400mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke400 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X400-40
The SCJ32X400-40 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly on the machine. A rear-cap adjusting screw lets you shorten the effective stroke by up to 40 mm without removing the cylinder, making it ideal for commissioning trials, format changeovers, or taking up mechanical wear. The 12 mm diameter rod and PT1/8 ports keep the envelope compact for light-automation tasks.
At 0.5 MPa air pressure, this 32 mm bore delivers 402 N of push force and 345 N on the pull stroke, giving it a solid push-bias characteristic for clamping or ejecting. The body length A is 182 mm, and the adjustable air cushion helps decelerate the piston quietly across the full 30-800 mm/s speed range. It is a genuine AirTAC SCJ built for repeatable, field-configurable motion.
Airtac SCJ32 Standard Cylinder SCJ32X400-40 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X400-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 400 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 SCJ32X400-40
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SCJ32X400-40 Is Used
Commissioning & Debugging
Fine-tune the end position of a stop gate or diverter during line bring-up. The 40 mm adjustment range lets technicians dial in the exact stroke without swapping cylinders or machining external hard stops.
Small-Part Ejectors
Adjust the push stroke of a reject station on a packaging conveyor. Operators can quickly compensate for different product heights or wear on the ejector finger by turning the rear screw.
Clamping with Stroke Take-Up
Use the SCJ32 on a light-duty clamp where jaw position drifts over time. The adjustable stroke end lets maintenance re-establish full clamping force without replacing the cylinder or re-machining the fixture.
Is the Airtac SCJ32 Standard Cylinder SCJ32X400-40 the Right Cylinder?
Choose the SCJ32 when your application needs a stroke that can be dialled in on-site rather than fixed at order time. If you need more push force, step up to the 40 mm bore SCJ40, which provides 628 N push at the same 0.5 MPa. For applications where the stroke must never be altered after setup, the fixed-stroke SC32 cylinder is a simpler, slightly shorter alternative. As a direct replacement, match another AirTAC SCJ32 with a 400 mm nominal stroke, 40 mm adjust range, PT1/8 ports, and basic mounting. At this 400 mm stroke length, ensure the rod is guided externally if significant side loads are present, or consider a guided cylinder to prevent rod bending.
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 SCJ32X400-40 FAQ
At the standard operating pressure of 0.5 MPa, the push force is 402 N and the pull force is 345 N. The maximum push force at 0.9 MPa is 724 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the area of the 12 mm rod.
A rear-cap screw mechanically limits how far the piston can extend, giving you up to 40 mm of field-adjustable stroke reduction from the 400 mm nominal maximum. Pick the SCJ when you need to fine-tune the stroke end on the machine for setup, changeover, or wear compensation. Choose a fixed-stroke SC32 if your stroke is a known, unchanging value and you want the simplest possible cylinder.
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