Airtac SCJ50 Standard Cylinder SCJ50X150-100H
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-100H 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke150 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X150-100H
The SCJ50X150-100H is a 50 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap adjusting screw lets you shorten the effective stroke by up to 100 mm from the 150 mm nominal maximum, delivering 982 N of push force at 0.5 MPa without swapping the cylinder body.
This variant is built with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for hot or aggressive environments. The 20 mm diameter piston rod, PT1/4 port, and 21 mm air cushion work together to provide smooth deceleration, while the 194 mm body length (A dimension) keeps the footprint compact for inline mounting.
Airtac SCJ50 Standard Cylinder SCJ50X150-100H Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-100H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 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 SCJ50X150-100H
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SCJ50X150-100H Is Used
Hot-Environment Stroke Tuning
In ovens or autoclaves, use the 100 mm adjust range to dial in the exact stroke end for different product carriers without opening the hot zone, while Viton seals handle sustained 0–150 °C temperatures.
Wear Take-Up on Clamping
On a high-cycle welding fixture, the adjusting screw compensates for electrode wear over thousands of cycles, maintaining consistent clamp force by shortening the stroke end in fine increments.
Multi-Format Packaging Stop
A packaging machine running three box sizes can use the SCJ50X150-100H to set a different stroke end for each format via the rear screw, eliminating the need for multiple hard stops or cylinder swaps.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-100H the Right Cylinder?
Choose the SCJ50X150-100H when you need to fine-tune the stroke end position on a 50 mm bore platform, especially in high-temperature settings where standard TPU seals would degrade. If your force requirement is lower, stepping down to the 40 mm bore (628 N push at 0.5 MPa) saves space; for higher force, the 63 mm bore provides 1559 N. This adjustable-stroke unit is ideal for commissioning and format changes, but if your application demands a fixed, repeatable stroke with no field adjustment, a standard SC50X150 fixed-stroke cylinder is a simpler choice. For replacement, match the 50 mm bore, 150 mm nominal stroke, 100 mm adjust range, PT port thread, basic mounting, and Viton seal suffix (H). At 150 mm stroke, rod bending is minimal, but for longer strokes or side loads, consider an external guide rail.
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 SCJ50X150-100H FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N (the difference is due to the single 20 mm rod). At the maximum operating pressure of 0.9 MPa, push force reaches 1767 N. The adjustable stroke screw does not change these force values.
Yes, this is a direct replacement for any AirTAC SCJ50 adjustable-stroke cylinder with a 150 mm nominal stroke, 100 mm adjust range, PT ports, and basic mounting, provided your application requires Viton seals for high-temperature operation (0–150 °C). Always verify the adjust range matches your machine's end-stop requirement.
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