Airtac SCJ100 Standard Cylinder SCJ100X275-20
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X275-20 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, 275mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke275 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X275-20
The SCJ100X275-20 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, allowing operators to fine-tune the 275 mm nominal stroke by up to 20 mm via a rear-cap adjusting screw. This 100 mm bore cylinder delivers a substantial 3927 N of push force at 0.5 MPa, making it suitable for medium-to-heavy industrial linear applications where precise end-position control is required.
With a 25 mm diameter piston rod and PT1/2 porting, the SCJ100X275-20 integrates reliably into existing pneumatic circuits. The adjustable cushion provides smooth deceleration, while the tie-rod construction ensures robust, serviceable performance. The body length A(SCJ) is 245 mm, offering a compact footprint relative to its force output.
Airtac SCJ100 Standard Cylinder SCJ100X275-20 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X275-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 275 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 SCJ100X275-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | 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 SCJ100 Standard Cylinder SCJ100X275-20 Is Used
End-Stop Fine-Tuning
Perfect for clamping fixtures where the final jaw position must be dialed in precisely after installation, compensating for workpiece or tooling tolerances without reprogramming the machine.
Product Changeover
Ideal for conveyor diverters or pushers handling different box sizes. The 20 mm adjustment allows a quick mechanical stroke change to match a new product format without swapping the cylinder.
Wear Compensation
In high-cycle pressing or riveting operations, the adjustable screw can be used to take up mechanical wear in the tooling over time, maintaining consistent final position and product quality.
Is the Airtac SCJ100 Standard Cylinder SCJ100X275-20 the Right Cylinder?
Select the SCJ100X275-20 when you need the 3927 N push force of a 100 mm bore but require the ability to dial in the stroke end position during commissioning or changeovers. If your application demands higher force, stepping up to the 125 mm bore provides 6136 N of push at 0.5 MPa. For applications that do not require stroke adjustment, the fixed-stroke SC100X275 is a direct alternative.
For a drop-in replacement, match the 100 mm bore, 275 mm nominal stroke, 20 mm adjustment range, and PT port thread. This model is configured with a basic mount; foot (LB), front flange (FA), or center trunnion (TC) mounting kits are available separately. For strokes over 300 mm, consider an external guide to manage potential rod deflection under side loads.
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 SCJ100X275-20 FAQ
The push force is 3927 N at 0.5 MPa and 7068 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the single 25 mm rod, providing 3681 N at 0.5 MPa and 5497 N at 0.7 MPa.
Yes, this is a direct dimensional and performance replacement for any AirTAC SCJ100X275-20 cylinder. Ensure your existing unit has the same 20 mm adjustment range, PT1/2 ports, and basic mounting configuration. If your old unit had a magnet (S suffix) or different mount, select the corresponding option code.
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