
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 250mm 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.
Fine correction is the whole point of the -10 option on this 250 mm stroke: the stop screw trims the extend length by up to 10 mm, enough to absorb tooling tolerance without touching the plumbing. The double-acting 16 mm bore delivers 100.5 N out and 86.4 N back at 0.5 MPa (140.7 N at 0.7 MPa), and a variable cushion at each cap absorbs the arrival shock of light assemblies.
Its riveted stainless barrel and hard-chrome plated 6 mm rod laugh off coolant mist around machine tools, a durability edge over painted steel minis. Treat 60 N as the practical push budget at 0.5 MPa - roughly the force needed to seat a small bearing into its bore. The magnet fitted as standard accepts CMSG / DMSG / EMSG switches for end-of-travel confirmation. Air: 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X250-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 250 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.
| 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.
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×250 | 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 maintenance bench uses the cylinder to seat small bearings, and the 10 mm trim absorbs tolerances between batches of housings.
On a pilot skid the rod flips a small three-way valve 250 mm from the manifold, with M5x0.8 ports tying straight into 6 mm tubing.
A go/no-go plug gauge retracts 250 mm clear of a machined bore, and a CMSG switch confirms full retraction before the spindle indexes.
Pick this over the wide-trim MACJ16X250-100 when the stroke length is nearly final and only a small correction is wanted; over the bumper-equipped MAJ if end-of-stroke softening rather than trimming is the need. Bore 16 gives 100.5 N at 0.5 MPa - go to bore 20 (157.0 N push) for heavier seating work. Mount via FA flange or LB foot; I and Y knuckles suit linkage jobs. Note the trim stop does not lock the rod, so loads can creep if supply pressure is lost.
Quick checklist
At 0.5 MPa: 100.5 N push, 86.4 N pull. At 0.7 MPa: 140.7 N push, 120.9 N pull. Theoretical peak at 1.0 MPa: 20.5 kgf for this 16 mm bore. Proof pressure is 1.5 MPa (215 psi), working range 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
Yes - every MA-series cylinder carries a built-in piston magnet, so CMSG, DMSG or EMSG switches clamp on without special ordering, and the variable air cushion works at both end covers so you can soften landings independently at each end of the 250 mm travel.
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