Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S
The AirTAC Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S is a genuine double acting, double rod + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 500mm stroke, M5×0.8 air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke500 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S
The AirTAC MGCD20X500S is a double acting, double-rod JIS round-body mini cylinder with a variable air cushion at both ends. A rod exits each cover with the same M8x1.25 male thread, so both ends of the stroke deliver an equal 131.9 N at 0.5 MPa (184.7 N at 0.7 MPa, about 26.9 kgf theoretical at 1.0 MPa) because the rod-side area is active in both directions. The adjustable air cushion decelerates the piston smoothly at each end, letting this 20 mm bore run at speed or carry moderate loads without hard metal-to-metal stops, while the rear rod end doubles as a mounting point for a stop, flag or second load. The 500 mm stroke exceeds the 300 mm standard maximum for this bore, so it is supplied as a non-standard, made-to-order length.
Construction follows the JIS mini-cylinder footprint: a riveted SUS304 stainless barrel with a hard-chrome plated 8 mm rod, a two-way lubricant-storing piston seal, and M5x0.8 ports. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), tolerates 1.5 MPa (215 psi) proof pressure and -20 to +70 C, and travels at 30-800 mm/s. The fitted magnet (the S in the code) accepts CMSG, DMSG or EMSG switches for end-of-stroke detection. For a realistic working load, size around 60 percent of the push force, roughly 8 kgf, or about 4 kgf if the cylinder lifts a vertical load.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S Technical Specifications
| Model | Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S |
|---|---|
| Series | MGCD JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Acting type | Double acting, double rod + cushion |
| Port size | M5×0.8 |
| 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 MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S
| MGCD | JIS round-body mini cylinder (double-rod, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB | Mounting: FA flange, LB foot. |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S Is Used
High-speed anti-rotation transfer
The through-rod resists load rotation while the variable air cushion softens each end, letting this 20 mm bore shuttle small parts between stations at up to 800 mm/s with clean, repeatable stops.
Twin-load light press with soft stop
Rod ends on both covers carry two small fixtures or a workpiece and a stop, and the 131.9 N per side at 0.5 MPa presses or ejects with a cushioned finish instead of a jarring impact.
Long-rear-switch slide
The rear rod end drives a cam or flag past CMSG, DMSG or EMSG switches on the 500 mm stroke, giving position feedback on a long, cushioned linear slide built on the JIS mini footprint.
Is the Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S the Right Cylinder?
Choose the MGCD20X500S when you need the smallest MGCD bore with a long 500 mm reach, equal force in both directions, and cushioned stops; at 131.9 N per side at 0.5 MPa it suits light transfer and positioning duty. If you need more force, step up to MGCD25 or MGCD32; for heavier work the MGCD40 to MGCD63 range tops out near 1400 N per side at 0.5 MPa. If a fixed bumper pad is enough instead of an adjustable cushion, the MGD covers double-rod duty in bores 20 to 40, and the MGC is the cushioned single-rod alternative. Mount with the LB foot or FA flange and add I or Y rod knuckles on the moving end; there is no CB or SDB option in this family. The fitted magnet works with CMSG, DMSG or EMSG switches. Because the 500 mm stroke is well beyond the 300 mm standard for this bore, support the rod against side load and align the tooling carefully; the cushion decelerates the piston but does not lock it, so add a pilot check valve or external rod lock if the load must hold on air loss.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA) & knuckle
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 and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MGCD Stainless Steel Mini Air Cylinder MGCD20X500S FAQ
Because it is a double-rod cylinder, force is equal in both directions: 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of about 26.9 kgf at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), withstands a 1.5 MPa (215 psi) proof pressure, operates from -20 to +70 C, and travels at 30-800 mm/s. Ports are M5x0.8 and the rod thread is M8x1.25 on both ends.
The cushion is an adjustable air damper at each end of the stroke: you bleed it to decelerate the piston smoothly for high speeds or heavier loads. It only slows the piston near the end; it is not a lock, so the load is not held on air loss and an external rod lock or pilot check valve is needed for holding. Unlike the MGD, which uses fixed bumper pads, the MGCD has this adjustable air cushion, and unlike the single-rod MGC it has a rod at both covers, giving equal force both ways and a rear rod end for a stop or second load. The fitted magnet also accepts CMSG, DMSG or EMSG switches.
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