Airtac SCJ100 Standard Cylinder SCJ100X50-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X50-30 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. Ø100mm bore, 50mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke50 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X50-30
The SCJ100X50-30 is a double-acting, single-rod pneumatic cylinder with a 100 mm bore and a nominal 50 mm stroke, featuring a rear-cap adjusting screw that provides a 30 mm field-adjustable range for fine-tuning the stroke end position. Operating on filtered air at 0.15–1.0 MPa, this tie-rod cylinder delivers a substantial 3927 N of push force and 3681 N of pull force at 0.5 MPa, making it suitable for medium-to-heavy linear actuation tasks where the final stopping point needs precise, on-machine setting without swapping the cylinder.
This model uses a 25 mm diameter piston rod, PT1/2 port threads, and an M20x1.5 rod-end knuckle thread for direct load attachment. The cylinder body has an overall length (A dimension) of 245 mm and features an adjustable air cushion with a 29 mm cushion length to decelerate the piston smoothly at end-of-travel. The 30 mm adjustment range is ideal for commissioning trials, accommodating tooling wear, or changing product formats on a packaging or assembly line.
Airtac SCJ100 Standard Cylinder SCJ100X50-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X50-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X50-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SCJ100 Standard Cylinder SCJ100X50-30 Is Used
End-Stop Commissioning
During machine setup, the 30 mm rear screw allows engineers to walk the piston stopping point to the exact mechanical position required, compensating for stack-up tolerances in tooling without re-machining brackets or ordering multiple fixed-stroke cylinders.
Format Changeover
On a packaging line switching between box sizes, the adjustable stroke lets operators quickly reset the pusher stroke end from one product length to another. The 3927 N push force at 0.5 MPa is ample for squaring and positioning heavy cartons.
Wear Compensation
In high-cycle clamping or pressing fixtures, the adjustable screw can be advanced periodically to take up mechanical wear on contact pads or tooling surfaces, maintaining consistent clamp force and part registration without disassembling the actuator.
Is the Airtac SCJ100 Standard Cylinder SCJ100X50-30 the Right Cylinder?
Choose the SCJ100X50-30 when you require the force of a 100 mm bore—3927 N push at 0.5 MPa—and the ability to dial in the stroke end point by up to 30 mm. If your force requirement is lower, stepping down to an 80 mm bore SCJ reduces push force to 2513 N at the same pressure, saving space and air consumption. For applications needing a fixed, non-adjustable stroke, a standard SC100X50 cylinder is a simpler, more cost-effective alternative. This SCJ cylinder is a direct replacement for another AirTAC SCJ100X50-30 with PT ports and basic mounting; ensure the adjustable range matches your existing setup. For strokes of 300 mm or more, always evaluate side-loading on the 25 mm rod and consider an external guide rail or a guided cylinder to prevent rod bending and premature seal 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 SCJ100 Standard Cylinder SCJ100X50-30 FAQ
The cylinder produces 3927 N of push force and 3681 N of pull force at 0.5 MPa, scaling linearly with pressure up to a maximum push force of 7068 N at the 0.9 MPa operating limit. The rear adjusting screw only sets the physical stroke end position; it does not alter the bore area, piston force, or speed in any way.
Yes, provided your application can accommodate the slightly longer body length of the SCJ (A dimension 245 mm) and you need the 30 mm field-adjustable range. The mounting footprint, port size (PT1/2), and rod thread (M20x1.5) are identical to the SC100 series. If you do not require stroke adjustability, the standard SC100 is a direct dimensional match for a fixed-stroke replacement.
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