Airtac SCJ50 Standard Cylinder SCJ50X150-75S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke150 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X150-75S
The SCJ50X150-75S is a double-acting, single-rod pneumatic cylinder that puts stroke-end tuning directly in your hands. Its rear-cap adjusting screw provides a 75 mm adjustment range, letting you fine-tune the 150 mm nominal stroke for commissioning or format changes without swapping the cylinder. With a 20 mm diameter piston rod and PT1/4 ports, it delivers 982 N of push force at 0.5 MPa.
This model includes a built-in magnet (-S suffix), so CMSG/DMSG/EMSG sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length A is 194 mm, and the adjustable air cushion decelerates the piston smoothly. Operating pressure spans 0.15–1.0 MPa, with a proof pressure of 1.5 MPa, making it a robust choice for general industrial automation.
Airtac SCJ50 Standard Cylinder SCJ50X150-75S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 75 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 SCJ50X150-75S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ50X150-75S Is Used
Commissioning & Debugging
The 75 mm adjustment range allows engineers to dial in the exact stroke end position on a new machine during initial setup, eliminating the need to stock multiple fixed-stroke cylinders for trial runs.
Product Format Changeover
Quickly adapt a pusher or stopper station to handle different box or pallet sizes on a packaging line. The rear screw adjusts the stroke end in seconds without dismounting the cylinder.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can take up slack caused by pad wear or material thickness variations over time, maintaining consistent contact force without reprogramming a stop.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-75S the Right Cylinder?
Choose the SCJ50 when your application needs around 982 N of push force at standard plant air. If you require more force, stepping up to a 63 mm bore provides 1559 N of push at the same 0.5 MPa. For applications needing less force and a smaller footprint, the 40 mm bore delivers 628 N. If your stroke never needs field adjustment, the fixed-stroke SC series offers the same force profile in a slightly shorter body.
For a direct replacement, match the 50 mm bore, 150 mm nominal stroke, 75 mm adjustment range, PT port thread, and the built-in magnet. This basic mount version requires no additional brackets. For strokes of 300 mm or longer, evaluate side-loading on the 20 mm rod; an external guide rail or a switch to a guided cylinder may be necessary to prevent rod bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ50X150-75S FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The push force is higher because the single rod reduces the piston area on the return side. The maximum operating push force at 0.9 MPa is 1767 N.
A rear-cap screw limits the piston's outward travel, letting you shorten the stroke end by up to 75 mm from the 150 mm nominal maximum. Choose the SCJ when your machine needs fine end-position tuning during setup, for different product sizes, or to compensate for wear. If the stroke is fixed and never changes, the standard SC cylinder is a more economical choice.
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 SCJ50X150-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.