Airtac SCJ100 Standard Cylinder SCJ100X50-40S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X50-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 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-40 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X50-40S
The SCJ100X50-40S is a double-acting, single-rod pneumatic cylinder from AirTAC, featuring a rear-cap adjusting screw that provides a 40 mm field-adjustable stroke range. With a 100 mm bore, it delivers a substantial 3927 N of push force at 0.5 MPa, making it a powerful solution for heavy-duty industrial tasks where the final end position needs fine-tuning after installation.
This model includes a built-in magnet (-S suffix), allowing for direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for precise end-of-stroke detection. The standard TPU seals offer a reliable operating temperature range of -20 to +70 °C, and the 29 mm air cushion at each end ensures smooth, high-speed deceleration of the 25 mm diameter piston rod.
Airtac SCJ100 Standard Cylinder SCJ100X50-40S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X50-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 40 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 SCJ100X50-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | Nominal (maximum) stroke length in mm. |
| -40 | 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 SCJ100X50-40S Is Used
Commissioning & Setup
Fine-tune the end position of a heavy pressing or clamping mechanism during initial machine setup. The 40 mm adjustment range allows operators to quickly dial in the exact stroke needed without machining custom stops.
Wear Compensation
In high-cycle material handling or sorting gates, the adjustable stroke can be used to compensate for wear on contact surfaces over time, maintaining precise part placement without immediate component replacement.
Multi-Format Tooling
Adapt a single machine to handle different product sizes. The SCJ100X50-40S allows a quick stroke-end adjustment for a format changeover on a packaging or assembly line, reducing downtime between batches.
Is the Airtac SCJ100 Standard Cylinder SCJ100X50-40S the Right Cylinder?
Select the SCJ100X50-40S when you need the high force of a 100 mm bore but require the ability to dial in the stroke end position on the machine without swapping cylinders. If your application requires less force, consider stepping down to the 80 mm bore SCJ80 series, which provides 2513 N of push force at 0.5 MPa. For even higher force requirements, the 125 mm bore SCJ125 series offers 6136 N.
This adjustable-stroke model is ideal for commissioning and format changeovers. If your task requires a fixed, repeatable stroke with no field adjustment, the standard SC100 series is a better fit. For a direct replacement, match the 100 mm bore, 50 mm nominal stroke, 40 mm adjust range, PT port thread, and the built-in magnet option. This model uses a basic mount; foot (LB) or trunnion (TC) mounting kits can be added using the F-SC100 series accessories.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ100X50-40S FAQ
The theoretical push force at 0.5 MPa is 3927 N, and the pull force is 3681 N due to the 25 mm rod reducing the effective piston area. At the maximum operating pressure of 1.0 MPa, the push force reaches 7854 N.
A rear-cap screw mechanically limits the piston's end-of-stroke position, allowing you to shorten the stroke by up to 40 mm from the 50 mm nominal maximum. It can replace a fixed-stroke SC100 if you need field adjustability, but you must match the bore, port thread, and ensure the adjusted stroke range covers your required working stroke.
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