CU Series Free Mount Cylinder With Air Cushion
Caution
- ■ SMC Product Line
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- Product images may be representative images. Refer to the manufacturer's catalog for shape details.
Product Description
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.
CU Series Free Mount Cylinder With Air Cushion
| Model | Pneumatic (non-lube) type |
|---|---|
| Fluid | Air |
| Proof Pressure | 1.0 MPa |
| Maximum operating pressure | 0.7 MPa |
| Minimum operating pressure | 0.08 MPa |
| Ambient and Fluid Temperature | Without auto switch: -10°C to +70 ℃ (no freezing) |
| With auto switch: -10°C to +60 ℃ (no freezing) | |
| Rod-end thread | Male thread |
| Stroke Length Tolerance | 0 to +1.0 |
| Operating piston speed | 50 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
| Number | Part Name | Material | Quantity | Notes |
|---|---|---|---|---|
| 1 | Cylinder Tube | Aluminum alloy | 1 | Hard anodized aluminum |
| 2 | Rod cover | Aluminum alloy | 1 | Hard anodized aluminum |
| 3 | Head cover | Aluminum alloy | 1 | Chromate |
| 4 | Piston | Aluminum alloy | 1 | Chromate |
| 5 | Piston rod | Stainless steel | 1 | - |
| 6 | Retaining Ring | Carbon tool steel | 1 | Phosphate conversion coating |
| 7 | Rod end nut | Carbon steel | 1 | Chromate |
| 8 | Cushion needle assembly | - | (2) | - |
| 9 | Steel ball | Carbon steel | 2 | - |
| 10 | Magnet | - | 1 | - |
| 11 | Auto switch | - | (2) | - |
| 12 | Piston gasket | NBR | 1 | - |
| 13 | Piston packing | NBR | 2 | - |
| 14 | Rod packing | NBR | 1 | - |
| 15 | Gasket | NBR | 1 | - |
Drawing
Dimensional drawings: CU Series Free Mount Cylinder With Air Cushion
(Units: mm)
| Tube inner diameter (mm) | Port | A | A' | B | C | CA | CB | D | E | GA | GB | H | J | JA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | M5 × 0.8 | 12 | 14 | 26 | 42 | 20 | 22 | 8 | 9 | 29 | 27 | 19 | 16 | 12 |
| 25 | M5 × 0.8 | 15.5 | 18 | 32 | 50 | 25 | 25 | 10 | 10 | 32.5 | 22.5 | 23 | 20 | 15 |
| 32 | 1/8 | 19.5 | 22 | 40 | 62 | 31 | 31 | 12 | 11 | 35 | 25 | 27 | 24 | 19 |
(Units: mm)
| Tube inner diameter (mm) | K | KA | L | MM | NN | P | Q | R | T | S | Z | Standard Stroke |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 30 | 5 | 6 | M6 × 1.0 | M5 × 0.8 depth 8 | 5.5 | 13 | 16 | 9.3 depth 8 | 53 | 72 | 20, 30, 40, 50, 60, 70, 80, 90, 100 |
| 25 | 38 | 6 | 8 | M8 × 1.25 | M5 × 0.8 depth 8 | 5.5 | 23.5 | 20 | 9.3 depth 9 | 51.5 | 74.5 | |
| 32 | 48 | 7 | 10 | M10 × 1.25 | M6 × 1.0 depth 9 | 6.6 | 29 | 24 | 11 depth 11.5 | 56 | 83 |
Dimensional drawings: rod-end nut / accessory
(Units: mm)
| Part No. | Applicable Tube Bore Size (mm) | d | H1 | B1 | C1 |
|---|---|---|---|---|---|
| NT-015A | 20 | M6 × 1.0 | 5 | 10 | 11.5 |
| NT-02 | 25 | M8 × 1.25 | 5 | 13 | 15.0 |
| NT-03 | 32 | M10 × 1.25 | 6 | 17 | 19.6 |
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
*( ): denotes the values of D-A96.
(Units: mm)
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□V | D-M9□, D-M9□W | D-M9□V, D-M9□WV | D-M9□A | D-M9□AV | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | W | A | B | W | A | B | W | A | B | W | A | B | W | |
| 20 | 18 | 15 | 13 (10.5) | 22 | 19 | 9 | 22 | 19 | 11 | 22 | 19 | 11 | 22 | 19 | 13 |
| 25 | 20 | 11 | 9 (6.5) | 24.5 | 15 | 5 | 24.5 | 15 | 7 | 24.5 | 15 | 7 | 24.5 | 15 | 9 |
| 32 | 22.5 | 13.5 | 11.5 (9) | 26.5 | 17.5 | 7.5 | 26.5 | 17.5 | 9.5 | 26.5 | 17.5 | 9.5 | 26.5 | 17.5 | 11.5 |
- *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)
Vertical 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)
*See the manufacturer's catalog for product information other than that detailed above.