Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50 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 50mm for a usable window of 25–75mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke75 mm
- Adjustable25–75 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50
The AirTAC MBLCJ20X75-50 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. The 50 mm adjust code lets you trim the rear travel, creating a usable stroke window of 25 to 75 mm. Delivering 157 N of push force at 0.5 MPa, it suits lighter actuators requiring precise end-position tuning.
This SKU omits the built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors. Unlike the base MBLJ with its fixed rubber bumper, the screw-tunable air cushions here decelerate faster, heavier moves to protect the end covers. The rear adjuster acts strictly as a mechanical travel stop, not a load-holding lock, so external guidance is needed for side-load stability on the Ø8 mm rod.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 75 mm |
| Adjustable window | 25–75 mm (trim 50 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 MBLCJ20X75-50
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ20X75-50 Is Used
PCB Depaneling Saw Feed
Feeds a circular saw blade at 157 N push force, using the 25-75 mm stroke window to dial the exact cutting depth without re-mounting the cylinder.
Lightweight Pick-and-Place Damping
Transfers small electronic relays, relying on the adjustable air cushions to softly stop the Ø8 mm rod at both ends and prevent part ejection.
Label Applicator Pinning
Extends a pin to secure a label roll core, using the 50 mm rear stroke adjustment to accommodate varying roll widths precisely.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X75-50 the Right Cylinder?
Stepping down to the smaller MBLCJ16 bore is not an option for this series, but moving up to the MBLCJ25 bore increases your 0.5 MPa push force to 245 N if your payload exceeds 157 N. Choose this MBLCJ20 variant over the MBLJ when your application's velocity requires tunable pneumatic damping rather than a fixed rubber bumper. Remember that the adjustable stroke mechanism and the air cushions regulate travel and deceleration, but neither will hold a load in place without continuous air pressure.
Mounting is limited to Basic, FA flange, or LB foot styles, as this series lacks back-cover or SDB pivot options. The standard PT tapered port threads mate with G1/8 fittings, and the rod end features an M8x1.25 thread. For a direct replacement, match the 20 mm bore, 75 mm stroke, 50 mm adjust code, 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 MBLCJ20X75-50 FAQ
At 0.5 MPa it provides 157 N push and 132 N pull force; at 0.7 MPa it pushes 220 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The 50 mm rear adjuster allows you to mechanically trim the active stroke down from 75 mm, yielding a usable travel window of 25 to 75 mm.
No, this specific SKU lacks the built-in -S magnet, so it cannot trigger AirTAC CMSG reed or DMSG/EMSG electronic switches. You must select an MBLCJ20X75-50S variant if your control system requires rod-position detection.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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