Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 155–175mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke175 mm
- Adjustable155–175 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S
The AirTAC MBLCJ20X175-20S is a compact double-acting aluminum mini cylinder featuring a single Ø8mm carbon-steel rod. It delivers 157N push and 132N pull force at 0.5 MPa. A rear travel stopper lets you trim up to 20mm of the 175mm stroke, creating a usable 155-175mm end-position window for precise mechanical timing. Unlike the base MBLJ, this model uses a screw-tunable adjustable air cushion at both ends to decelerate faster moves and protect the end covers.
The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal ensure stable friction. The built-in magnet (-S) supports CMSG, DMSG, and EMSG sensor switches for position detection. Note the overall length equals A + 2 x stroke + adjust; the cushion only decelerates the load, while the rear stopper sets the travel end—neither component mechanically locks the rod in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 155–175 mm (trim 20 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 MBLCJ20X175-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×175 | Nominal stroke length in mm. |
| -20 | 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 MBLCJ20X175-20S Is Used
PCB Router Z-Axis
Governs the 155-175mm plunge depth of a spindle on a PCB depaneling router, using the tunable air cushion to arrest the 157N downward stroke smoothly without shocking the spindle bearings.
Dispenser Probe Travel
Sets the exact 155mm lower limit for a fluid dispensing probe in a solder paste printer, trimming the 175mm stroke by 20mm to accommodate varying substrate thicknesses.
Label Applicator Tamp
Drives a 175mm tamp stroke for a bottle label applicator, using the -S magnet with a DMSG solid-state switch to trigger the label vacuum at high speed.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20S the Right Cylinder?
With a 157N push force at 0.5 MPa, stepping down is not an option as 20mm is the smallest available bore. If your application requires more thrust, the 25mm bore yields 245N push at 0.5 MPa. Choose this MBLCJ variant over the MBLJ when your cycle speed demands tunable end-deceleration rather than a fixed rubber bumper, or over the MBLC when you need the 155-175mm adjustable stroke window rather than a fixed end position. Because the 175mm stroke approaches the 300mm maximum for this bore, the small 8mm rod is highly susceptible to side-load bending; use an external guide rail to prevent rod damage.
For exact replacement matching, verify the 20mm bore, 175mm stroke, 20mm adjust code, G1/8 port, PT thread form, and the built-in magnet (-S). Mounting is limited to Basic, FA (flange), or LB (foot); do not look for SDB pivot or back-cover options on this series.
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 MBLCJ20X175-20S FAQ
At 0.5 MPa, this 20mm bore cylinder provides 157N push and 132N pull force. At 0.7 MPa, push increases to 220N, with a theoretical maximum of 32 kgf at 1.0 MPa. The 175mm stroke is within the 300mm maximum standard stroke limit for the 20mm bore size.
The rear 20mm adjuster acts as a mechanical travel stop, allowing you to set the usable stroke window from 155mm to 175mm. The adjustable air cushion is a separate screw-tunable feature that regulates end-of-stroke deceleration to prevent end-cover damage. Neither the cushion nor the adjuster locks the load in place; the rod drifts without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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