Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S
Set the stop screw once and the extend stroke sits anywhere within a 30 mm band - handy when product sizes change between batches. This is a double-acting, variable-cushion cylinder: 628.3 N of push at 0.5 MPa, rising to 879.6 N at 0.7 MPa, delivered from a 40 mm bore in a slim stainless tube.
That tube is the quiet advantage. Rolled and riveted with aluminium covers into one sealed body, it shrugs off splash, condensation and outdoor air far better than painted or bare-aluminium minis, while the 20 um hard-chrome rod keeps friction low. Pressure runs 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof limit. Size the continuous duty around 377 N at 0.5 MPa rather than the full 628.3 N rating and the seals will last through millions of cycles.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -30 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S Is Used
Weld-cell bracket clamp
Clamps brackets against a fixture in cells with coolant mist and grinding dust; the stainless barrel and chrome rod simply do not flake like painted minis.
Filling nozzle lift
Raises and lowers a filling or dosing head between bottles; the 30 mm band adapts the lift to different bottle formats on one machine.
Case merge gate
Actuates a merge gate that folds cases across lanes; 628.3 N push at 0.5 MPa keeps the gate crisp even with dusty cardboard edges.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S the Right Cylinder?
Bore 32 (402.2 N) handles the lighter end of this class; bore 50 (981.3 N at 0.5 MPa) takes the heavier one - this 40 mm sits in the sweet spot at 628.3 N. Choose FA flange or LB foot mounting and add an I or Y knuckle where the linkage pivots. The 30 mm adjuster is an extend-side end stop: on air failure the rod is free to move, so do not rely on it to park a suspended load. Over a 200 mm stroke, watch rod alignment and let external guides carry any side thrust.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-30S FAQ
Push is 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa; pull is 527.8 N and 738.9 N at the same pressures; the theoretical ceiling is 128.1 kgf at 1.0 MPa. The 1/8" port feeds both directions.
Both ends carry adjustable air cushions, so the last millimetres of travel decelerate the load instead of banging into the covers. That means you can move 628.3 N-class payloads faster within the 30-800 mm/s window, extend service life, and quiet the machine - particularly useful at the full 200 mm stroke.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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