Airtac SCJ100 Standard Cylinder SCJ100X30-20S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X30-20S 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. Ø100mm bore, 30mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke30 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X30-20S
The SCJ100X30-20S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, delivering 3927 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 20 mm of stroke-end reduction, allowing operators to fine-tune the piston stop position without dismounting the cylinder or adding external hard stops.
This model integrates a built-in magnet, enabling direct mounting of CMSG/DMSG/EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection. With a 25 mm rod, PT1/2 ports, and a 29 mm air cushion, it is built for precise deceleration and consistent performance in automated sequences requiring frequent format changes.
Airtac SCJ100 Standard Cylinder SCJ100X30-20S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X30-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 30 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X30-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SCJ100 Standard Cylinder SCJ100X30-20S Is Used
Commissioning & Setup
During machine commissioning, the 20 mm adjustment screw lets technicians dial in the exact stroke end position to align with tooling or stops, eliminating the need to swap cylinders for minor dimensional corrections.
Product Changeover
On packaging lines handling different box sizes, the adjustable stroke allows operators to quickly reset the pusher stroke end from 30 mm down to 10 mm, accommodating a new product format without mechanical modifications.
Wear Compensation
In clamping or pressing fixtures, the stroke can be incrementally shortened over time to compensate for pad or tooling wear, maintaining consistent clamping force and part contact without reprogramming the PLC.
Is the Airtac SCJ100 Standard Cylinder SCJ100X30-20S the Right Cylinder?
Choose the SCJ100 series when your application demands a push force around 3927 N at standard plant pressure. If you need a lighter, more compact unit, the 80 mm bore SCJ80 delivers 2513 N of push force at the same 0.5 MPa. For applications that do not require stroke-end adjustment, the fixed-stroke SC100 cylinder is a simpler, cost-effective alternative. This SCJ100X30-20S is a direct replacement for any AirTAC SCJ100 with a 30 mm nominal stroke and a 20 mm adjust range, matching PT ports and the S magnet option. For strokes of 300 mm or more, evaluate side-loading on the 25 mm rod; an external linear guide or a guided cylinder assembly is recommended to prevent rod bending.
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 SCJ100 Standard Cylinder SCJ100X30-20S FAQ
At 0.5 MPa, it produces 3927 N of push force and 3681 N of pull force. The maximum push force at the 0.9 MPa operating limit is 7068 N. The theoretical maximum at 1.0 MPa is 801 kgf.
Yes, provided the mounting, port thread (PT), and magnet option match. The SCJ100X30-20S has the same body envelope as the SC100 but includes a rear adjusting screw that allows you to reduce the effective stroke by up to 20 mm, which is useful if you need to fine-tune the end position after installation.
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