Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 75mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 45–75mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke75 mm
- Adjustable45–75 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30
The AirTAC MBLCJ20X75-30 is a compact double-acting mini cylinder with an 8mm carbon-steel rod. It produces 157N push and 132N pull force at 0.5MPa. The rear stroke adjuster allows you to trim up to 30mm of travel, creating a usable end-position window of 45 to 75mm. This SKU has no built-in magnet and cannot accept a CMSG or DMSG position sensor.
Unlike the base MBLJ with its fixed rubber bumper, this version features a screw-tunable adjustable air cushion at both ends. This lets you dial in end-of-stroke deceleration for faster cycle times while protecting the aluminum end covers. Note that the rear stopper sets the travel end but does not hold the load; the cushion only decelerates, so external locking is needed for position holding.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 45–75 mm (trim 30 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -30 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 Is Used
PCB Edge Routing
Drives a light routing spindle at 157N push, using the 45-75mm stroke window to precisely set cutting depth without moving the cylinder body.
Micro-Clamp Actuation
Tunes the air cushion to softly decelerate a small 8mm rod when clamping delicate electronic components during assembly.
Label Applicator Tamp
Pads labels onto packaging using the adjustable stroke stopper to compensate for varying carton thicknesses without drifting.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 the Right Cylinder?
If you need less force, the neighbouring 12mm bore class offers lower output, while stepping up to the 25mm bore provides 245N push at 0.5MPa for heavier resistance. Choose this MBLCJ over the MBLJ when your cycle speed requires tunable deceleration rather than a fixed bumper, or over the MBLC when you need that 45-75mm adjustable end-position window. Remember that neither the rear travel stopper nor the cushion acts as a load lock. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. To replace this unit, match the 20mm bore, 75mm stroke, 30mm adjust, G1/8 port, PT thread, and confirm no magnet is required.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-30 FAQ
At 0.5MPa, this 20mm bore cylinder provides 157N push and 132N pull force. At 0.7MPa, the push increases to 220N. The maximum theoretical force is 32kgf at 1.0MPa.
The rear adjuster is a mechanical travel stop that trims your usable stroke window down to 45-75mm. The adjustable air cushion is a separate screw-tunable valve that controls end-of-stroke deceleration. Neither holds a load in place.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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