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CU Series Free Mount Cylinder With Air Cushion (CDU20-50A-M9N)

CU Series Free Mount Cylinder With Air Cushion CDU20-50A-M9N

Air cylinder that adopts a new air cushion mechanism.
[Features]
· Multiple-surface direct mounting with a square body and no brackets lets you freely choose the mounting surface.
· This enables space-saving designs for equipment.
· Slightly extended dimensions relative to the CU standard models.
· There is no protrusion of the cushion valve, and the width is the same.
· 3 types of mounting orientations can be accommodated according to the installation conditions.
· Approximately 2.4 times more allowable kinetic energy.
· Improved sound insulation (reduced impact of noise at the stroke end).
· Interchangeable mounting.

(i)Caution

  • ■ SMC Product Line
    Webpages for products currently without individual pages on this site will be released on an ad-hoc basis.
  • Refer to the manufacturer's catalog for specification and material details.
  • Product images may be representative images. Refer to the manufacturer's catalog for shape details.​

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Part Number

Configured Part Number is shown.

CDU20-50A-M9N

CU Series Free Mount Cylinder With Air Cushion

ModelPneumatic (non-lube) type
FluidAir
Proof Pressure1.0 MPa
Maximum operating pressure0.7 MPa
Minimum operating pressure0.08 MPa
Ambient and Fluid TemperatureWithout auto switch: -10°C to +70 ℃ (no freezing)
With auto switch: -10°C to +60 ℃ (no freezing)
Rod-end threadMale thread
Stroke Length Tolerance0 to +1.0
Operating piston speed50 to 500 mm/s

Effective Cushion Length

  • Bore size 20 mm: effective cushion length 6.6 mm
  • Bore size 25 mm: effective cushion length 6.7 mm
  • Bore size 32 mm: effective cushion length 7.7 mm

Standard Stroke Table

Bore size 20 mm, 25 mm, 32 mm: standard stroke 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm

Diagram

Diagram: CU Series

Diagram: CU Series

NumberPart NameMaterialQuantityNotes
1Cylinder TubeAluminum alloy1Hard anodized aluminum
2Rod coverAluminum alloy1Hard anodized aluminum
3Head coverAluminum alloy1Chromate
4PistonAluminum alloy1Chromate
5Piston rodStainless steel1-
6Retaining RingCarbon tool steel1Phosphate conversion coating
7Rod end nutCarbon steel1Chromate
8Cushion needle assembly-(2)-
9Steel ballCarbon steel2-
10Magnet-1-
11Auto switch-(2)-
12Piston gasketNBR1-
13Piston packingNBR2-
14Rod packingNBR1-
15GasketNBR1-

Drawing

Dimensional drawings: CU Series Free Mount Cylinder With Air Cushion

Dimensional drawings: CU Series Free Mount Cylinder With Air Cushion

 

(Units: mm)

 

Tube inner diameter
(mm)
PortAA'BCCACBDEGAGBHJJA
20M5 × 0.8121426422022892927191612
25M5 × 0.815.51832502525101032.522.5232015
321/819.5224062313112113525272419

 

(Units: mm)

 

Tube inner diameter
(mm)
KKALMMNNPQRTSZStandard Stroke
203056M6 × 1.0M5 × 0.8 depth 85.513169.3 depth 8537220, 30, 40, 50, 60,
70, 80, 90, 100
253868M8 × 1.25M5 × 0.8 depth 85.523.5209.3 depth 951.574.5
3248710M10 × 1.25M6 × 1.0 depth 96.6292411 depth 11.55683
Dimensional drawings: rod-end nut / accessory

Dimensional drawings: rod-end nut / accessory

 

(Units: mm)

 

Part No.Applicable Tube
Bore Size (mm)
dH1B1C1
NT-015A20M6 × 1.051011.5
NT-0225M8 × 1.2551315.0
NT-0332M10 × 1.2561719.6

Material: carbon steel

Proper Auto Switch Mounting Position (Detection at Stroke End) and Mounting Height

 

(Units: mm)

 

Dimensional drawings: D-A9□/D-M9□/D-M9□W/D-M9□A

Dimensional drawings: D-A9□/D-M9□/D-M9□W/D-M9□A

*( ): denotes the values of D-A96.

 

(Units: mm)

 

Dimensional drawings: D-A9□V/D-M9□V/D-M9□WV/D-M9□AV

Dimensional drawings: D-A9□V/D-M9□V/D-M9□WV/D-M9□AV

*( ): denotes the values of D-M9□V/D-M9□WV.

 

(Units: mm)

 

Tube inner diameter
(mm)
D-A9□, D-A9□VD-M9□, D-M9□WD-M9□V, D-M9□WVD-M9□AD-M9□AV
ABWABWABWABWABW
20181513 (10.5)22199221911221911221913
2520119 (6.5)24.515524.515724.515724.5159
3222.513.511.5 (9)26.517.57.526.517.59.526.517.59.526.517.511.5
  • *1Figures in the table above are used as a reference when mounting the auto switches for stroke end detection. When actually setting the auto switches, adjust them after confirming their operation.
  • *2Values in ( ) under column W are dimensions for the D-A90 and D-A93 type.

Operating Range

D-A9□, D-A9□V

Bore size 20 mm: 11 mm / Bore size 25 mm: 12.5 mm / Bore size 32 mm: 14 mm

D-M9□, D-M9□V, D-M9□W, D-M9□WV, D-M9□A, D-M9□AV

Bore size 20 mm: 7 mm / Bore size 25 mm: 7 mm / Bore size 32 mm: 7.5 mm

*The operating range is provided as a guideline that includes hysteresis and is not a guaranteed value (assuming approximately ±30% dispersion). It may vary substantially depending on the ambient environment.

Mounting

Axial mounting (body tapped)

Axial mounting (body tapped)

Vertical mounting (body through-holes)

Vertical mounting (body through-holes)

Lateral mounting (body through-holes)

Lateral mounting (body through-holes)

Precautions

Installation and Removal of Retaining Rings

  • *Use an appropriate pair of pliers (tool for installing a type C retaining ring) for installation and removal of retaining rings.
  • *Even when using an appropriate pair of pliers (tool for installing a type C retaining ring), proceed with caution as there is a danger of the retaining ring flying off the end of the pliers (tool) and causing bodily injury or damage to nearby equipment. After installation, make sure that the retaining ring is securely seated into the retaining ring groove before supplying air.

Selection

  • *Operate the cylinder to the stroke end. When the stroke is restricted by an external stopper or a clamped workpiece, sufficient cushioning and noise reduction may not be achieved.
  • *Strictly observe the limiting ranges for load weight and maximum speed (Graph 1). Also, the limiting ranges provided here are based on the condition that the cylinder is operated to the stroke end with proper cushion needle adjustment. If operated beyond the limiting ranges, excessive impact will occur and this may cause damage to equipment.
Limiting ranges for load weight and maximum speed (Graph 1)

Limiting ranges for load weight and maximum speed (Graph 1)

*See the manufacturer's catalog for product information other than that detailed above.

Part Number
CDU20-50A-M9N
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipCylinder (Tube) Inner Diameter
(Ø)
Stroke
(mm)
Operating Temperature
(°C)
Port thread type Auto Switches Lead Wire The number of the switches Connector type

-

1 Piece(s) Quote 2050-10~60M5 × 0.8M9N0.52 pcs.None

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Basic Information

Cylinder Operation Method Double Acting Rod Operation Method Single Rods Main Body Shape Plate Cylinder
Additional Function Standard Environment, Applications Standard End Locking No
Valves No Operating Pressure(MPa) 0.08::0.7

Please check the type/dimensions/specifications of the part CDU20-50A-M9N in the CU Series Free Mount Cylinder With Air Cushion series.

Similar Part Numbers

Part Number
CDU20-100A-A93LS
CDU20-100A-A93V
CDU20-100A-M9B
CDU20-50A-M9NL
CDU20-50A-M9NV
CDU20-50A-M9NW
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipCylinder (Tube) Inner Diameter
(Ø)
Stroke
(mm)
Operating Temperature
(°C)
Port thread type Auto Switches Lead Wire The number of the switches Connector type

-

1 Piece(s) Quote 20100-10~60M5 × 0.8A9331 pc.None

-

1 Piece(s) Quote 20100-10~60M5 × 0.8A93V0.52 pcs.None

-

1 Piece(s) Quote 20100-10~60M5 × 0.8M9B0.52 pcs.None

-

1 Piece(s) Quote 2050-10~60M5 × 0.8M9N32 pcs.None

-

1 Piece(s) Quote 2050-10~60M5 × 0.8M9NV0.52 pcs.None

-

1 Piece(s) Quote 2050-10~60M5 × 0.8M9NW0.52 pcs.None

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