Airtac SCJ50 Standard Cylinder SCJ50X120-100
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X120-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø50mm bore, 120mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke120 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X120-100
The SCJ50X120-100 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the stopping position by up to 100 mm without swapping the unit. With a 50 mm bore, it delivers 982 N of push force at 0.5 MPa and 1767 N at 0.9 MPa, making it a solid mid-range actuator for tasks that need repeatable end-point tweaking during commissioning or changeovers.
This tie-rod cylinder uses a 20 mm diameter piston rod, PT1/4 ports, and an M16x1.5 rod thread for easy attachment. The adjustable screw is housed in the rear cap, and the body length A(SCJ) is 194 mm. Its 21 mm air cushion decelerates the piston quietly, and the standard TPU seal operates reliably from -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X120-100 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X120-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 120 mm |
| Stroke adjustment | Up to 100 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 SCJ50X120-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×120 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ50X120-100 Is Used
Commissioning & Setup
Adjust the 100 mm screw to precisely set the end-of-stroke position during initial machine setup, eliminating the need for custom-length cylinders or external hard stops.
Format Changeovers
Quickly adapt the cylinder's stroke for different product sizes on packaging or sorting lines by turning the rear adjusting screw, reducing downtime between batches.
Wear Compensation
Fine-tune the stroke end over the cylinder's life to compensate for mechanical wear in linkages or tooling, maintaining precise positioning without replacing parts.
Is the Airtac SCJ50 Standard Cylinder SCJ50X120-100 the Right Cylinder?
Step up to the 63 mm bore (1559 N push at 0.5 MPa) if you need more force for heavier tooling, or down to 40 mm (628 N) for lighter, faster-cycling tasks. The SCJ is the right choice when you need to dial in the stroke end on the machine—if the stroke length is fixed and never changes, a standard SC fixed-stroke cylinder is a simpler, more cost-effective alternative. For direct replacement, match the 50 mm bore, 120 mm nominal stroke, 100 mm adjustment range, PT port thread, and basic mounting style.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ50X120-100 FAQ
At 0.5 MPa, it generates 982 N of push force and 825 N of pull force. At the maximum operating pressure of 0.9 MPa, push force increases to 1767 N. The push force is higher than the pull force because the single rod reduces the piston area on the return side.
Yes, if you need the ability to adjust the stroke end. The SCJ50X120-100 is a direct dimensional replacement for another AirTAC SCJ of the same bore, nominal stroke, and 100 mm adjustment range. Ensure your mounting (basic), port thread (PT), and magnet options match.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ50 Standard Cylinder SCJ50X120-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.