Airtac SCJ50 Standard Cylinder SCJ50X90-10
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X90-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 90mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke90 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X90-10
The SCJ50X90-10 is a tie-rod, double-acting single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 10 mm of field-adjustable stroke-end reduction. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a versatile workhorse for general industrial automation where the final stroke position needs fine-tuning during commissioning or changeover.
This model has a nominal 90 mm stroke, PT1/4 ports, and an M16x1.5 rod thread. The adjustable screw shortens the stroke end within the 10 mm range without altering the cylinder's push/pull force characteristics. Its body length A(SCJ) is 194 mm, and it includes a 21 mm air cushion for smooth end-of-stroke deceleration.
Airtac SCJ50 Standard Cylinder SCJ50X90-10 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X90-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 90 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCJ50 Standard Cylinder SCJ50X90-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×90 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ50 Standard Cylinder SCJ50X90-10 Is Used
Commissioning & Setup Fine-Tuning
During machine bring-up, the 10 mm rear adjust screw lets technicians dial in the exact stroke end position for grippers, pushers, or stops without remachining brackets or swapping cylinders, speeding up the commissioning process.
Wear Take-Up on Stops
In repetitive stopping applications where a workpiece or tooling stop wears over time, the adjustable stroke can be shortened slightly to compensate for material loss, maintaining consistent positioning without mechanical shimming.
Format Changeover Adjustment
For packaging or assembly lines running multiple product sizes, the 10 mm adjust range allows operators to quickly shift the stroke end to suit different box heights or part thicknesses, reducing changeover downtime.
Is the Airtac SCJ50 Standard Cylinder SCJ50X90-10 the Right Cylinder?
Choose the SCJ50X90-10 when you need a 50 mm bore cylinder with a 90 mm nominal stroke and the ability to dial back the stroke end by up to 10 mm on the machine. If 982 N of push force at 0.5 MPa is insufficient, stepping up to the 63 mm bore SCJ63 provides 1559 N; if it is more force than needed, the 40 mm bore SCJ40 offers 628 N. The adjustable stroke makes this ideal for applications requiring precise end-position tuning without swapping cylinders.
For a direct replacement, match the 50 mm bore, 90 mm nominal stroke, 10 mm adjust range, PT1/4 ports, and basic mounting. If your application does not require stroke adjustability, a fixed-stroke SC50X90 is a simpler alternative. This cylinder uses the SCJ mounting subset: FA front flange (F-SC50FA), LB foot mount (F-SC50LB), or TC centre trunnion (F-SC50TC with TCM1 bracket). The basic configuration here has no magnet, so position sensing requires external switches.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ50 Standard Cylinder SCJ50X90-10 FAQ
The SCJ50X90-10 produces 982 N of push force and 825 N of pull force at 0.5 MPa operating pressure. At the maximum 1.0 MPa, push force reaches 1767 N. The rear adjusting screw only sets the stroke end position within a 10 mm range; it does not alter the cylinder's output force, which is determined solely by the 50 mm bore, 20 mm rod, and air pressure.
Yes, this is a direct replacement for any AirTAC SCJ50 adjustable-stroke cylinder with a 90 mm nominal stroke and 10 mm adjust range. Ensure the port thread matches (this model is PT1/4), and verify the mounting style. If your old cylinder has a magnet, you would need the SCJ50X90-10S variant. The SCJ uses a tie-rod body design, so it is not dimensionally interchangeable with ISO 15552 profile cylinders.
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