Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X40-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X40-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 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.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM6×1.0
- 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 MACJ16X40-20S
A 20 mm trim window on a 40 mm stroke makes the MACJ16X40-20S a natural fit for top-press and clamp stations where the die or fixture changes between runs. The cylinder is double-acting, cushioned at both ends by a variable air cushion, and built from a rolled stainless barrel with a 20 um hard-chrome rod. At 0.5 MPa it pushes 100.5 N and pulls 86.4 N.
Work the load out from that 100.5 N figure: about 60 N of real push is the dependable budget at 0.5 MPa, and the bore will lift around 5 kg vertically with a 2:1 margin. The riveted covers and grease-retaining piston seal keep maintenance light in dusty assembly cells. Every cylinder leaves the factory with the magnet installed, ready for EMSG, CMSG or DMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X40-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X40-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 300 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 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 MACJ16X40-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -20 | 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 MACJ16X40-20S Is Used
Capsule filler lid press
Seats lids with a 20 to 40 mm adjustable press depth, re-set in seconds between batch changes.
Vial tray jam gate
Diverts a jammed vial lane at a sorting tray; the cushions stop the gate quietly at high cycle rates.
Leak-test probe advance
Advances a test probe onto fittings, with the magnet feeding a CMSG switch that confirms full advance.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X40-20S the Right Cylinder?
At 100.5 N push at 0.5 MPa, this 16 mm bore handles light pressing and gate duty; loads beyond roughly 60 N of working force call for the 20 mm bore at 157.0 N or the 25 mm bore at 245.3 N. The 20 mm window lets operators re-set extend travel between product changes without swapping cylinders. Keep in mind the adjuster is an extend end stop only - it will not hold a load against gravity when air is lost. Choose FA flange or LB foot mounting, add I or Y rod knuckles for pivoting links, and note the SDB and back-cover codes do not apply to adjustable models.
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 MACJ16X40-20S FAQ
At 0.5 MPa: 100.5 N extend, 86.4 N retract. At 0.7 MPa: 140.7 N extend, 120.9 N retract. The theoretical ceiling is 20.5 kgf at 1.0 MPa. Pressures of 0.15-1.0 MPa (22-145 psi) and speeds of 30-800 mm/s apply.
Pick an FA flange or an LB foot; I and Y rod knuckles suit pivoting links. Adjustable-stroke models carry no SDB or back-cover code, so order mounts by the FA and LB letters in the code. The port is M5x0.8 with an M6x1.0 male rod thread.
Authorized Export Seller
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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