Airtac SCJ50 Standard Cylinder SCJ50X100-30S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke100 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X100-30S
The SCJ50X100-30 is a double-acting single-rod cylinder that puts 982 N of push force at 0.5 MPa (1767 N at 0.9 MPa) into a compact tie-rod body with a 194 mm base length. Its rear adjusting screw provides up to 30 mm of stroke-end reduction, letting you dial in the exact stopping position on the machine without swapping the cylinder or adding external hard stops.
A 20 mm diameter piston rod and PT1/4 ports handle air filtered to 40 µm, while the adjustable air cushion decelerates the load smoothly across the full 30-800 mm/s speed range. The built-in magnet (suffix -S) allows CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the barrel for reliable end-of-stroke detection.
Airtac SCJ50 Standard Cylinder SCJ50X100-30S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 30 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 SCJ50X100-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -30 | 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 SCJ50X100-30S Is Used
Commissioning & Fine-Tuning
The 30 mm rear adjuster lets technicians dial in the precise stroke end during machine setup, compensating for assembly tolerances without cutting guide rails or repositioning the cylinder.
Product Format Changeover
Quickly adjust the push stroke for different box or pallet sizes on a packaging line. The 982 N push force at 0.5 MPa handles medium-weight product stops and diverters reliably.
Wear Take-Up in Clamping
In clamping or pressing fixtures, the screw compensates for pad wear over time. The 1767 N maximum push at 0.9 MPa provides a strong, repeatable clamp force after each adjustment.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-30S the Right Cylinder?
Step up to the 63 mm bore SCJ63X100-30 if your application needs the higher 1559 N push force at 0.5 MPa; step down to the 40 mm bore (628 N push) when space and weight matter more than raw force. This SCJ50X100-30 is the correct replacement for an existing AirTAC SCJ50X100-30 with PT threads, basic mounting, and the -S magnet—match the nominal 100 mm stroke and 30 mm adjust range exactly.
For a fixed, non-adjustable stroke, the standard SC50X100 is a simpler alternative. If the load introduces significant side forces at this 100 mm stroke, consider an external guide rail or a guided cylinder to protect the rod bearing from premature wear.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ50X100-30S FAQ
At the standard 0.5 MPa operating pressure, it delivers 982 N pushing and 825 N pulling. The maximum push force at 0.9 MPa is 1767 N. Because it is a single-rod cylinder, the pull force is lower due to the 20 mm rod reducing the effective piston area on the return stroke.
Yes, if you need field-adjustable stroke-end control. The SCJ50X100-30 shares the same 50 mm bore, PT1/4 ports, and mounting footprint as the SC50, but adds a rear adjusting screw that shortens the stroke by up to 30 mm. Ensure your machine has clearance for the slightly longer SCJ body (194 mm base length) and that the -S magnet option matches your sensor setup.
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