Airtac SCJ100 Standard Cylinder SCJ100X350-20
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X350-20 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. Ø100mm bore, 350mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke350 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X350-20
The SCJ100X350-20 is a 100 mm bore double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. At 0.5 MPa, it delivers 3927 N of push force and 3681 N of pull force, making it suitable for pressing, clamping, and material-handling tasks where the final stop position needs fine-tuning during commissioning or after tooling wear.
This tie-rod cylinder uses a 25 mm diameter piston rod, PT1/2 ports, and a 29 mm air cushion for smooth deceleration. The body length A(SCJ) is 245 mm. The adjustable stroke end is set by turning the rear screw, allowing operators to dial in the exact stop point within the 20 mm range without swapping the cylinder or adding external hard stops.
Airtac SCJ100 Standard Cylinder SCJ100X350-20 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X350-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 350 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 SCJ100X350-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SCJ100X350-20 Is Used
End-Stop Fine-Tuning
The 20 mm rear adjusting screw lets technicians dial in the exact stroke end for a press or clamp during setup, compensating for fixture tolerances without changing the cylinder.
Format Changeover
On packaging or sorting lines, operators can quickly adjust the pusher stroke end by up to 20 mm to handle different box sizes, reducing changeover time.
Wear Take-Up
As tooling or gripper pads wear over time, the stroke end can be incrementally extended by backing out the adjusting screw, maintaining consistent contact without replacing parts.
Is the Airtac SCJ100 Standard Cylinder SCJ100X350-20 the Right Cylinder?
Choose the SCJ100X350-20 when you need a 350 mm nominal stroke with the ability to shorten the end position by up to 20 mm on the machine. If the force requirement is lower, step down to an 80 mm bore (2513 N push at 0.5 MPa); for higher force, step up to a 125 mm bore (6136 N push at 0.5 MPa). For a fixed stroke without the adjusting screw, the standard SC100X350 is a simpler alternative. If the application involves significant side loading at this 350 mm stroke, consider an external guide rail or a guided cylinder to protect the rod bearing.
This model is a direct replacement for another AirTAC SCJ100X350-20 with PT ports and basic mounting. When replacing, match the bore, nominal stroke, 20 mm adjust range, port thread, and any mounting accessories. The SCJ mounting subset includes FA front flange, LB foot, and TC centre trunnion with TCM1 bracket; flange FB and clevis CA/CB are not available for this series.
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 SCJ100X350-20 FAQ
At 0.5 MPa, this 100 mm bore cylinder produces 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 0.9 MPa, push force reaches 7068 N. The pull force is lower because the 25 mm rod reduces the effective piston area on the return stroke.
Yes, the SCJ100X350-20 has the same bore, nominal stroke, and mounting footprint as the SC100X350, but adds the rear adjusting screw. Ensure the extra body length (A dimension 245 mm) fits your machine. The adjusting screw allows you to shorten the stroke end by up to 20 mm, which is not possible on the fixed-stroke SC.
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