The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X700-100SH 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. Ø40mm bore, 700mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X700-100SH is a 40 mm bore double-acting, single-rod cylinder with a field-adjustable stroke end, offering up to 100 mm of adjustment from its 700 mm nominal maximum. This model delivers 628 N of push force at 0.5 MPa and is built with a 16 mm diameter piston rod, making it a robust mid-range actuator for applications where end-of-stroke position needs fine-tuning without swapping the cylinder.
This variant includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a Viton (FKM) seal (-H) rated for high-temperature operation from 0 to +150 °C. The PT1/4 port and M12x1.25 rod thread ensure straightforward integration, while the 21 mm air cushion at each end provides smooth deceleration across the 700 mm travel.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X700-100SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 700 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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.
The 100 mm adjustment range allows operators to quickly reset the push stroke for different box or carton sizes on a packaging line, eliminating mechanical stop changes during format switchovers.
With its Viton seals rated to 150 °C, this cylinder reliably actuates gates or pushers near ovens, dryers, or autoclaves, where standard seals would degrade.
In long-running clamping fixtures, the adjustable stroke can be incrementally extended to compensate for pad or workpiece wear, maintaining consistent clamping force without replacing the actuator.
When the 628 N push force at 0.5 MPa is insufficient, stepping up to the 50 mm bore SCJ (982 N push) provides a significant power increase without a large footprint jump. If stroke adjustment is not required, a fixed-stroke SC40 cylinder is a simpler, more cost-effective alternative. For applications where the rod experiences high side loads during this 700 mm extension, an external guide rail or a guided cylinder is recommended to prevent rod bending and ensure long seal life.
This SCJ40X700-100SH is a direct replacement for any AirTAC SCJ40 cylinder with a 700 mm nominal stroke and 100 mm adjust range, provided the port thread (PT), Viton seal, and magnet sensor option match. The basic mounting configuration uses the cylinder body for direct installation, and foot (LB) or front flange (FA) accessories can be added if needed.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder provides 628 N of push force and 528 N of pull force. The maximum push force at 0.9 MPa is 1130 N. The pull force is lower because the 16 mm rod reduces the effective piston area on the return stroke.
A rear-cap adjusting screw sets the stroke end position, allowing you to shorten the 700 mm nominal stroke by up to 100 mm. It is a mechanical end-stop for commissioning and format changes, not a mid-stroke position lock. The cylinder will not hold a load if air pressure is lost; an external rod lock or pilot-operated check valve is required for load holding.
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