Airtac SCJ50 Standard Cylinder SCJ50X90-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X90-10S 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 SCJ50X90-10S
The SCJ50X90-10S delivers up to 982 N of push force at 0.5 MPa in a 50 mm bore package, making it a strong mid-range actuator for tasks that need a fine-tuned stroke end. Its rear adjusting screw lets you shorten the 90 mm nominal stroke by up to 10 mm without swapping the cylinder, which is ideal for commissioning and wear take-up on assembly fixtures.
This model includes a built-in magnet, so reed or solid-state sensors clamp directly onto the tie-rod barrel for end-of-stroke sensing. The 20 mm piston rod and PT1/4 ports keep it compatible with common pneumatic plumbing, while the adjustable air cushion at each end decelerates the 982 N push load smoothly.
Airtac SCJ50 Standard Cylinder SCJ50X90-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X90-10S |
|---|---|
| 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 SCJ50X90-10S
| 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 SCJ50X90-10S Is Used
Commissioning & Setup
Field technicians can tweak the stroke end by up to 10 mm to perfectly align a clamp or stop during initial machine setup, eliminating the need to swap shims or cylinders.
Wear Compensation
In high-cycle pressing or clamping, the adjustable screw compensates for pad or tooling wear over time, maintaining consistent contact force without reprogramming the machine.
Product Changeover
When a packaging line switches between product sizes, the 10 mm adjustment range allows a quick mechanical stroke change on a diverter gate, reducing downtime.
Is the Airtac SCJ50 Standard Cylinder SCJ50X90-10S the Right Cylinder?
Choose the SCJ50X90-10S when a 50 mm bore provides the right force envelope and you need to dial in the stroke end precisely. If you need more force, stepping up to the 63 mm bore gives 1559 N push at 0.5 MPa; for a lighter, more compact solution, the 40 mm bore offers 628 N. The adjustable stroke is the key differentiator—if your stroke is truly fixed, a standard SC50X90 will be simpler and slightly shorter.
For replacement, match the 50 mm bore, 90 mm nominal stroke, 10 mm adjust range, PT ports, and the magnet-equipped suffix. This is a basic mount cylinder, so confirm your existing mounting brackets. If the 90 mm stroke creates a side-load risk, consider an external guide rail or a guided cylinder to protect the rod bearing.
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 SCJ50X90-10S FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N. The pull force is lower because of the 20 mm piston rod area.
Yes, provided your mounting and porting match. The SCJ50X90-10S has the same 50 mm bore, PT1/4 ports, and basic mount, but its body is slightly longer to house the rear adjusting screw. You will also gain the built-in magnet for sensor mounting.
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