
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X310SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 310mm 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.
Where a flush bolted face is needed, the MAC25X310SU answers with its U flat-end back cover and 310 mm of double-acting travel. AirTAC packs the stainless tube, aluminium covers and stainless block into a riveted round body that stays sealed through temperature swings from -20 to +70 C. Push force is 245.3 N at 0.5 MPa; budget roughly 147 N for real work, which lifts a 12 kg load vertically with a 2:1 safety margin.
Needle-valve cushioning at both ends lets you soften the long approach so a fast 800 mm/s return does not hammer the covers. The rod carries 20 um of hard chrome for wear life, and the built-in standard magnet means CMSG / DMSG / EMSG switches report position without special ordering.
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X310SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 310 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×310 | Stroke length in mm. |
| -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.
Draws the film carriage across a 310 mm index on a pallet wrapper; cushioned ends stop the carriage without jolt at speed.
Feeds blanks one at a time into a stamping press, delivering 147 N of working push against light friction guides.
Extends a pick head to a remote pick point beside a CNC lathe, with a DMSG switch confirming full extension via the standard magnet.
Step down to a 20 mm bore for 157.0 N at 0.5 MPa or up to a 32 mm bore for 402.2 N depending on the load. Across 310 mm of travel, off-axis forces can bend the 10 mm rod - keep the payload on linear guides. Air loss leaves the piston free to drift, so specify a rod lock or pilot check valve where a mid-stroke hold matters. The U cover mounts flush; add an FA flange or LB foot for rigid frames, or SDB for pivoting duty.
Quick checklist
Push 245.3 N, pull 206.1 N at 0.5 MPa; push 343.4 N, pull 288.5 N at 0.7 MPa; theoretical peak 50 kgf at 1.0 MPa. Pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), stroke speed 30-800 mm/s, air filtered to 40 um.
Yes - variable air cushioning at both ends. Back the needle screws fully off at commissioning, then close them gradually until the 310 mm stroke ends softly. The cushion is not a brake: the piston still drifts without air pressure, so use a rod lock for holding.
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