The AirTAC Airtac PBR Pen-Size Cylinders PBR16X125SU is a double-acting pen-size mini cylinder with threaded holes in its front cover for direct mounting — no separate bracket needed. It has a Ø16mm bore, 125mm stroke, M5×0.8 front-mount thread and a SUS316L stainless barrel for corrosive settings.
The PBR16X125SU is a double-acting, single-rod pen-size cylinder with a 16 mm bore and 125 mm stroke. Its front cover carries M5x0.8 threaded holes, so the cylinder bolts straight to top or bottom of a fixture with no separate mounting bracket - fewer parts and less stack height in tight machines. Push force is about 100.5 N at 0.5 MPa (140.7 N at 0.7 MPa), always higher than pull because of the single rod.
The barrel is SUS316L stainless, so it stands up better to damp, washdown or mildly corrosive lines than a plain barrel. Air enters through the M5x0.8 port on the U back cover, which faces the inlet 90 degrees to the side for flat plumbing against a plate. A fixed TPU bumper sits at each end to soften the last few millimetres of travel. The built-in piston magnet works with reed or electronic switches for position feedback.
| Model | Airtac PBR Pen-Size Cylinders PBR16X125SU |
|---|---|
| Series | PBR JIS pen-size front-mount cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Stroke | 125 mm |
| Front-mount thread | M5×0.8 |
| Port size | M5×0.8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Elastic bumper (both ends) |
| Max standard stroke | Up to 300 mm |
The front cover carries the mounting thread (M5×0.8) so the cylinder bolts directly to a fixture. Barrel is SUS316L stainless. Confirm bore, stroke and back-cover option against the product label before installation.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 N |
Values are taken from the AirTAC PB/PBR thrust table. Pull acts on the smaller rod-side area, so pull force is lower than push. Size with a friction margin.
| PBR | JIS pen-size front-mount double-acting mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| U / R | Back cover: U side / R axial inlet (bore-dependent). |
Mounting: direct front-cover thread (top or bottom bolts). Related PBR-family variants: PSBR (single-acting push), PTBR (single-acting pull); PB (back-mount) family also available.
Bolted straight to the jig through its M5x0.8 front threads, the 16 bore clamps workpieces with about 100.5 N at 0.5 MPa, and the SUS316L barrel shrugs off coolant mist.
Side-inlet U plumbing keeps the M5x0.8 port flat against the panel; the 125 mm stroke kicks parts off a nest, with the magnet driving a reed or electronic switch to confirm part-present.
Mounted under or beside a narrow conveyor, the pen-size body pushes small cartons off-line; the fixed TPU bumpers soften stroke ends, and an external guide protects the 5 mm rod from side load.
Size down first: the 12 bore gives 56.5 N push at 0.5 MPa - pick PBR12 if your load sits well under that. The 16 bore is the top of the PBR range, so if 100.5 N at 0.5 MPa is marginal, move to a larger series rather than hoping. Plan real work at roughly 60 N (about 60% of rated push) to leave margin for seal friction and smooth travel.
Order by bore, stroke, magnet and back cover: PBR16X125SU means 16 bore, 125 mm stroke (standard for this bore, up to 300 mm), S magnet, U 90-degree side inlet. When bolting through the front cover, match the M5x0.8 bolt size and keep full thread engagement - check this carefully on bottom mounting, where the cylinder hangs from its bolts.
Quick checklist
At 0.5 MPa: 100.5 N push (extend) and 90.7 N pull (retract). At the 0.7 MPa maximum: 140.7 N push and 126.9 N pull. Push always exceeds pull on this single-rod double-acting cylinder.
Mounting is direct: the front cover has M5x0.8 threaded holes for top or bottom bolts, so no bracket is needed - just match bolt size and thread engagement. The barrel is SUS316L stainless for damp or washdown areas. The S option adds a piston magnet that triggers reed or electronic switches. Note the fixed TPU bumpers only decelerate the last few millimetres; the cylinder does not hold position on air loss, so use an external stop or rod lock for fail-safe holding.
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