
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 500mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
Fine-positioning is the brief here: a full 500 mm sweep paired with a narrow 10 mm stop-screw window, so the extend stroke lands exactly where the process repeats every cycle. This 40 mm bore delivers 628 N at 0.5 MPa (128.1 kgf theoretical peak at 1.0 MPa) on a hard-chrome 16 mm rod inside a riveted stainless tube.
Reserve about 377 N for the actual job at 0.5 MPa, since sizing to the raw rating is how minis get overloaded. The rolled stainless barrel shrugs off coolant mist in machine shops, the standard magnet feeds CMSG / DMSG / EMSG switches for position feedback, and both covers carry a plain 1/8" port.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| 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.
| 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -10 | 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.
A 500 mm push carries the saw carriage across aluminium bar, and the 10 mm window sets the exact final depth of each cut.
A slide gate meters plastic pellets from a silo onto a belt; the stop screw fixes the open position so every dose stays equal.
A 500 mm crosshead traverse on an adhesive peel rig, where the trim window ends travel precisely at the specimen mark.
Work down as well as up: bore 32 offers 402 N at 0.5 MPa and often wins on price when the load allows, while this 40 mm bore is the MA series ceiling, so beyond 628 N look at MACJ with its adjustable cushion. Over a 500 mm span, carry side load on external guides rather than on the rod. Mount via FA flange or LB foot; the rod thread is M12x1.25 for tooling attachment. Note the 10 mm adjuster is an extend-side stop only, so a dropped supply still lets the piston move.
Quick checklist
Rated 628.3 N to extend and 527.8 N to retract at 0.5 MPa; 879.6 N extend and 738.9 N retract at 0.7 MPa; 128.1 kgf theoretical peak at 1.0 MPa. Pressure range 0.15-1.0 MPa (22-145 psi) and speed range 30-800 mm/s.
Choose FA flange or LB foot mounting, with I and Y rod knuckles available for pivoting loads. The rod end is M12x1.25 and both air ports are 1/8", which keeps standard fittings in play.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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