Airtac SCJ50 Standard Cylinder SCJ50X100-30TC
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-30TC 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 SCJ50X100-30TC
The SCJ50X100-30TC is a double-acting, single-rod pneumatic cylinder from the AirTAC SCJ adjustable-stroke series. Its defining feature is a rear-cap adjusting screw that provides up to 30 mm of stroke-end reduction, allowing field technicians to fine-tune the piston's stopping position without removing the cylinder or adding external hard stops. With a 50 mm bore and 20 mm rod, it generates 982 N of push force at 0.5 MPa, making it a versatile actuator for applications requiring mid-range force and on-machine adjustability.
This model is configured with a centre trunnion (TC) mount, which allows the cylinder body to pivot, ideal for applications where the load follows an arc. The trunnion bracket (TCM1) is included, and the assembly is supplied with PT (Rc) threaded ports. Operating on filtered air from 0.15 to 1.0 MPa, it features an adjustable air cushion for smooth deceleration and a standard TPU seal for a temperature range of -20 to +70 °C.
Airtac SCJ50 Standard Cylinder SCJ50X100-30TC Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-30TC |
|---|---|
| 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 SCJ50X100-30TC
| 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 SCJ50X100-30TC Is Used
Commissioning & Setup
The 30 mm rear adjustment screw allows engineers to quickly fine-tune the actuator's end-stop during initial machine setup, eliminating the need to shim or reposition the entire cylinder to achieve the perfect stroke length.
Product Changeover
On packaging or sorting lines, the stroke can be easily adjusted to accommodate different box sizes or product positions. A quick turn of the screw adapts the 100 mm nominal stroke for a new format without any disassembly.
Wear Compensation
In clamping or pressing operations, the adjustable stroke can be used to compensate for tooling wear over time. The operator can incrementally extend the stroke end to maintain consistent clamping force and part contact.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-30TC the Right Cylinder?
Select the SCJ50X100-30TC when you need to dial in a precise stroke end position during commissioning or for different product runs on the same machine. The 30 mm adjustment range is ideal for taking up tolerance stack-up or wear. If you require a higher force, stepping up to the 63 mm bore provides 1559 N of push force at the same 0.5 MPa pressure. For applications where the stroke length is fixed and will never need field adjustment, the standard SC series fixed-stroke cylinder is a more economical choice.
This cylinder is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder of the same 50 mm bore, 100 mm nominal stroke, 30 mm adjustment range, PT port thread, and centre trunnion (TC) mounting. For strokes of 300 mm or longer, always evaluate the side load on the 20 mm rod; if the load is not perfectly guided, use an external guide rail or switch to 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 SCJ50 Standard Cylinder SCJ50X100-30TC FAQ
A screw in the rear cap acts as an internal, adjustable end-stop for the piston's retraction stroke. By turning the screw, you can shorten the effective stroke by up to 30 mm from the nominal 100 mm maximum. It only adjusts the stroke end position and does not change the cylinder's output force or speed.
At the standard operating pressure of 0.5 MPa, this 50 mm bore cylinder provides a push force of 982 N. The pull force on the return stroke is lower, at 825 N, due to the area of the 20 mm piston rod. The maximum push force at 0.9 MPa is 1767 N.
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