Airtac SCJ32 Standard Cylinder SCJ32X100-20FA
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X100-20FA 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, 100mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke100 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X100-20FA
The SCJ32X100-20FA is a 32mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw provides up to 20mm of stroke-end shortening, allowing machine builders to fine-tune the piston stop position without replacing the cylinder or adding external hard stops. At 0.5 MPa, it delivers 402 N of push force and 345 N of pull force.
This model features an FA front rectangular flange (mounting code F-SC32FA) for direct panel or end-face mounting. The 12mm diameter piston rod has an M10x1.25 thread, and the cylinder body length A(SCJ) is 182mm. It uses PT1/8 ports and includes an adjustable air cushion for smooth deceleration. The standard TPU seal operates from -20 to +70°C.
Airtac SCJ32 Standard Cylinder SCJ32X100-20FA Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X100-20FA |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 100 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 SCJ32X100-20FA
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×100 | 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 SCJ32X100-20FA Is Used
Commissioning & Setup
The 20mm rear adjustment screw lets technicians dial in the exact stroke end position during machine commissioning, compensating for assembly tolerances without needing to shim or re-drill mounting points.
Small-Part Ejectors
Used on packaging lines to push lightweight products off a belt. The adjustable stroke allows operators to fine-tune the ejector's reach for different box sizes without swapping the cylinder.
Test & Measurement Fixtures
Ideal for clamping or probing stations where the final contact point must be set precisely. The screw adjustment provides a repeatable mechanical stop for consistent test results.
Is the Airtac SCJ32 Standard Cylinder SCJ32X100-20FA the Right Cylinder?
Choose the SCJ32 when you need compact, adjustable positioning in light automation. If 402 N of push force is marginal, stepping up to the SCJ40 provides 628 N at the same 0.5 MPa pressure. For applications where the stroke is fixed and never needs field adjustment, the standard SC32 fixed-stroke cylinder is a simpler, cost-effective alternative.
This unit is a direct replacement for another AirTAC SCJ32X100-20FA with the same bore, 100mm nominal stroke, 20mm adjust range, PT ports, and FA front flange. If your application involves significant side loads, consider adding an external guide rail or switching to a guided cylinder, as the SCJ's plain bearing is not designed to support high radial forces.
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 SCJ32X100-20FA FAQ
At the standard 0.5 MPa operating pressure, the push force is 402 N and the pull force is 345 N (the difference is due to the 12mm single rod). The maximum push force at 0.9 MPa is 724 N.
Yes, if the mounting and porting match. The SCJ32 has the same bore, rod, and port size as the SC32 but includes a rear adjusting screw, making the body slightly longer (A=182mm). Ensure you have clearance for the rear adjuster and order the same mounting type, in this case the FA front flange.
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