Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MACJ20X200-40S
Trim the extend stroke by up to 40 mm on site - the stop screw of the MACJ20X200-40S only shortens travel, it never stretches it past the 200 mm ordered stroke. Double-acting and cushioned at both ends, this bore 20 mini turns 0.5 MPa into 157 N of push and 131.9 N of pull, or 219.8 N and 184.7 N at 0.7 MPa. The piston magnet is factory-fitted, so CMSG / DMSG / EMSG switches need no special order.
The stainless round barrel with its hard-chrome plated 8 mm rod stays smooth in humid, dusty cells where painted minis rust and bind. Size the job for about 94 N of genuine work at 0.5 MPa - roughly 8 kg of vertical lifting once a margin is applied - and run it anywhere from 30-800 mm/s on 0.15-1.0 MPa (22-145 psi).
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MACJ20X200-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -40 | 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 MACJ20X200-40S Is Used
Dowel pin press
Presses dowel pins into small housings with 219.8 N available at 0.7 MPa; the 40 mm window sets final seat depth right on the bench.
Vial tray lifter
Raises a light tray of glass vials vertically - about 8 kg of lift at 0.5 MPa with margin built in - guided by the customer's own rails.
SMT feeder clamp
Clamps component feeders on a placement machine; the CMSG switch reports clamp state and the LB foot mount keeps wiring clear.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S the Right Cylinder?
Force ladder at 0.5 MPa: 100.5 N for bore 16, 157 N for this bore 20, 245.3 N for bore 25 - choose by load, not by price. On a 200 mm stroke any lateral push multiplies at the rod tip, so isolate side loads with your own guide rails rather than the rod itself. It mounts via an FA flange or LB foot and takes I or Y rod knuckles. One caution: the adjustable stop pins the extend position but does not arrest the piston when air is lost.
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 MACJ20X200-40S FAQ
At 0.5 MPa: 157 N push, 131.9 N pull. At 0.7 MPa: 219.8 N push, 184.7 N pull. Theoretical maximum: 32 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) air filtered to 40 um and run 30-800 mm/s.
FA flange and LB foot blocks bolt to the riveted round body, and I or Y rod knuckles handle pivoting links. The hard-chrome plated 8 mm rod and the two-way grease-storing piston seal keep maintenance to periodic checks; the 40 mm stroke window is set from the external stop screw with no disassembly.
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.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.