Airtac SCJ32 Standard Cylinder SCJ32X275-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X275-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 275mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke275 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X275-20
The SCJ32X275-20 is a 32 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. Its rear-cap adjusting screw provides up to 20 mm of stroke-end reduction, letting you fine-tune the 275 mm nominal stroke during commissioning or format changes without removing the cylinder. At 0.5 MPa, it delivers 402 N of push force and 345 N of pull force, driven by a 12 mm diameter piston rod.
This tie-rod cylinder uses a PT1/8 port and an M10x1.25 rod thread, with an adjustable air cushion of 21 mm for smooth deceleration. The body length A(SCJ) is 182 mm, and the standard operating speed is 30-800 mm/s. It is a genuine AirTAC unit built for filtered-air systems at 0.15-1.0 MPa, proof-tested to 1.5 MPa, and rated for -20 to +70 °C with its default TPU seals.
Airtac SCJ32 Standard Cylinder SCJ32X275-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X275-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 20 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 SCJ32X275-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ32X275-20 Is Used
Commissioning & Setup
The 20 mm rear-screw adjustment lets technicians dial in the exact stroke end during machine commissioning, compensating for minor fixture misalignments without needing to swap the cylinder or add external hard stops.
Format Changeover
On packaging or labelling lines, the SCJ32X275-20 allows operators to quickly adjust the stroke for different product sizes, reducing downtime between batches compared to a fixed-stroke cylinder.
Wear Take-Up
In clamping or pressing operations, the adjustable stroke can be used to compensate for pad or tooling wear over time, maintaining consistent contact force without reprogramming the machine controller.
Is the Airtac SCJ32 Standard Cylinder SCJ32X275-20 the Right Cylinder?
Choose the SCJ32X275-20 when you need a mid-stroke actuator in the 32 mm bore class that can be dialled in precisely on the machine. If your force requirement grows, stepping up to the 40 mm bore SCJ40 series provides 628 N of push force at the same 0.5 MPa pressure. For applications where the stroke length is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, lower-cost alternative. A direct replacement must match the 32 mm bore, 275 mm nominal stroke, 20 mm adjust range, PT port thread, and basic mounting style. If you need position sensing, specify the -S magnet option to use CMSG/DMSG sensors.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ32X275-20 FAQ
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The push force is higher because the single-rod design means pressure acts on the full bore area when extending, but the rod area is subtracted when retracting. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N.
Yes, if your existing cylinder is an AirTAC SCJ32 with a 275 mm nominal stroke and a 20 mm adjust range, this is a direct dimensional and performance replacement. Ensure the port thread (PT), mounting style, and magnet option match your current setup. The adjustable stroke end works identically to the original SCJ design.
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