CBA2 Series End Lock Cylinder (Standard, Heat Resistant)
Brand :
SMC
Caution
- ■ SMC Product Line
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Product Description
End lock cylinder that holds the cylinder's original position even if the air supply is cut off.
[Features]
· Same dimensions as standard CA2 Series cylinder.
· Non-locking type and locking type are standardized for manual release.
· Without auto switch (CBA2) or with auto switch (built-in magnet) (CDBA2).
· Tube material: aluminum tube, steel tube (*Not available for products with auto switch.)
· Bore size: 40 mm / 50 mm / 63 mm / 80 mm / 100 mm.
· Port thread types: Rc, NPT, G.
· Cushion: air cushion (Nil), no cushion (N).
· Lock position: with head-end lock (H), with rod-end lock (R), with double-end lock (W).
Model Number Notation
Model Number Notation
CBA2 Series End Lock Cylinder Specifications
CBA2 Series external appearance
CBA2 Series (air cushion) symbol
| Tube Inner Diameter (mm) | 40 | 50 | 63 | 80 | 100 |
|---|---|---|---|---|---|
| Fluid | Air | ||||
| Proof Pressure | 1.5 MPa | ||||
| Maximum operating pressure | 1.0 MPa | ||||
| Minimum operating pressure | 0.15 MPa*1 | ||||
| Ambient and fluid temperature | Without auto switch: -10°C to 70°C*2 With auto switch: -10°C to 60°C*2 | ||||
| Piston Speed | 50 to 500 mm/s | ||||
| Cushioning | Air cushion | ||||
| Stroke Length Tolerance | Up to 250st: (0 to +1.0) 251 to 1,000st: (0 to +1.4) 1,001 to 1,500st: (0 to +1.8) | ||||
| Lubrication | Not required (non-lubricated) | ||||
| Mounting | Basic type, axial foot type, rod-end flange type, head-end flange type, single clevis type, double clevis type, center trunnion type | ||||
- *10.05 MPa except for locking parts.
- *2No freezing.
Lock Specifications
| Lock position | Head end, rod end, double end | ||||
|---|---|---|---|---|---|
| Retention (MAX.) N | ø40 mm | ø500 mm | ø63 mm | ø80 mm | ø100 mm |
| 860 | 1,340 | 2,140 | 3,450 | 5,390 | |
| Backlash | 2 mm or less | ||||
| Manual release | Non-locking type, locking type | ||||
Rod Boot Material
- Rod boot material (J): nylon tarpaulin, maximum ambient temperature 70°C
- Rod boot material (K): heat-resistant tarpaulin, maximum ambient temperature 110°C*
*Maximum ambient temperature for the rod boot unit.
Diagram
Diagram: CBA2 Series with head lock
Diagram: non-locking type manual release (suffix N)
Diagram: locking type manual release (suffix L)
Components
- 1 Rod cover: Material: aluminum casting; Note: metallic painted
- 2 Head cover: Material: aluminum casting; Note: metallic painted
- 3 Cylinder tube: Material: aluminum alloy; Note: hard anodized
- 4 Piston: Material: aluminum alloy; Note: chromated
- 5 Piston rod: Material: carbon steel; Note: hard chrome plating
- 6 Bushing: Material: lead-bronze casting
- 7 Cushion ring A: Material: rolled steel; Note: electroless nickel plated
- 8 Tie-rod: Material: carbon steel; Note: zinc chromated
- 9 Tie-rod nut: Material: rolled steel; Note: zinc trivalent chromate
- 10 Spring washer: Material: steel wire; Note: zinc trivalent chromate
- 11 Snap ring: Material: spring steel; Note: phosphate coating
- 12 Cushion valve: Material: steel wire; Note: zinc trivalent chromate
- 13 Magnet (*products with auto switch only)
- 14 Lock piston: Material: carbon steel; Note: quenched, hard chrome plated
- 15 Lock bushing: Material: lead-bronze casting
- 16 Lock spring: Material: stainless steel
- 17 Damper: Material: urethane
- 18 C-ring: Material: steel wire; Note: zinc chromated
- 19 Seal retainer: Material: rolled steel; Note: zinc chromated
- 20 Cushion ring nut: Material: chromium molybdenum steel; Note: quenched, hard chrome plated
- 21 Hex socket head cap screw: Material: chromium molybdenum steel; Note: black zinc chromated
- 22 Rubber cap: Material: chloroprene rubber
- 23A Cap A: Material: aluminum casting, note: black coated
- 23B Cap B: Material: carbon steel; Note: oxide film treated
- 24 M/O knob: Material: diecast zinc; Note: black coated
- 25 M/O bolt: Material: chromium molybdenum steel; Note: black zinc chromated, red painted
- 26 M/O spring: Material: steel wire; Note: zinc chromated
- 27 Stopper ring: Material: carbon steel; Note: zinc chromated
- 28 Cushion valve seal: Material: NBR
- 29 Rod end nut: Material: rolled steel; Note: zinc trivalent chromate
- 30 Rod seal: Material: NBR
- 31 Piston seal: Material: NBR
- 32 Cylinder tube gasket: Material: NBR
- 33 Piston gasket: Material: NBR
- 34 Cushion seal: Material: NBR
- 35 Wear ring: Material: resin
- 36 Lock piston seal: Material: NBR
*Do not disassemble the trunnion type. See the manufacturer's catalog for details.
Drawing
Basic type
The dimensions are the same regardless of whether the lock position is head end, rod end or double end.
(Units: mm)
Dimensional drawings: with head-end lock, CBA2B□-□-HN
(Units: mm)
Dimensional drawings: with rod-end lock, CBA2B□-□-RN
(Units: mm)
Dimensional drawings: with double-end lock, CBA2B□-□-WN
(Units: mm)
Dimensional drawings: with rod boot
(Units: mm)
| Tube inner diameter (mm) | Stroke range (mm) | d | e | f | h | L | ZZ |
|---|---|---|---|---|---|---|---|
| 40 | 20 to 500 | 56 | 43 | 11.2 | 59 | 1/4 stroke | 154 |
| 50 | 20 to 600 | 64 | 52 | 11.2 | 66 | 1/4 stroke | 167 |
| 63 | 20 to 600 | 64 | 52 | 11.2 | 66 | 1/4 stroke | 178 |
| 80 | 20 to 750 | 76 | 65 | 12.5 | 80 | 1/4 stroke | 213 |
| 100 | 20 to 750 | 76 | 65 | 14 | 81 | 1/4 stroke | 224 |
(Units: mm)
| Tube inner diameter (mm) | Stroke range | A | AL | B | B1 | C | D | DL | E | F | G | H | H1 | HR | HN (MAX) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | Up to 500 | 30 | 27 | 60 | 22 | 44 | 16 | 13 | 32 | 10 | 15 | 51 | 8 | 42.3 | 56 |
| 50 | Up to 600 | 35 | 32 | 70 | 27 | 52 | 20 | 13 | 40 | 12 | 17 | 58 | 11 | 47.3 | 61 |
| 63 | Up to 600 | 35 | 32 | 85 | 27 | 64 | 20 | 15.5 | 40 | 10 | 17 | 58 | 11 | 54.8 | 68.5 |
| 80 | Up to 750 | 40 | 37 | 102 | 32 | 78 | 25 | 18.5 | 52 | 14 | 21 | 71 | 13 | 65.8 | 80.5 |
| 100 | Up to 750 | 40 | 37 | 116 | 41 | 92 | 30 | 20 | 52 | 14 | 21 | 72 | 16 | 72.8 | 87.5 |
| Tube Inner Diameter (mm) | J | K | KA | M | MM | MO | N | P | RF | S | WB | WL | ZZ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | M8 × 1.25 | 6 | 14 | 11 | M14 × 1.5 | 19 | 27 | 1/4 | 17 | 84 | 2.5 | 25 | 146 |
| 50 | M8 × 1.25 | 7 | 18 | 11 | M18 × 1.5 | 19 | 30 | 3/8 | 17 | 90 | 2.5 | 25 | 159 |
| 63 | M10 × 1.25 | 7 | 18 | 14 | M18 × 1.5 | 19 | 31 | 3/8 | 17 | 98 | 4 | 25 | 170 |
| 80 | M12 × 1.75 | 11 | 22 | 17 | M22 × 1.5 | 23 | 37 | 1/2 | 21 | 116 | 4 | 40 | 204 |
| 100 | M12 × 1.75 | 11 | 26 | 17 | M26 × 1.5 | 23 | 40 | 1/2 | 21 | 126 | 4 | 40 | 215 |
*The dimensions for each mounting type and the dimensions of accessories (options) are the same as the standard type double acting single rod model. Refer to the manufacturer's catalog.
Precautions
Circuit diagram: head-end lock (left) / rod-end lock (right)
- *Before using, please refer to the "Safety Precautions," the "Actuator Precautions," and the "Auto Switch Precautions."
- *Use the recommended pneumatic circuit. It is required to engage and disengage the locks correctly.
Usage Precautions
- *Do not use a 3-position solenoid valve. Avoid using this cylinder in combination with a 3-position solenoid valve (particularly the closed center metal seal type). If air pressure becomes sealed inside the port on the side that contains the lock mechanism, the lock will not engage. Even if the lock engages at first, the air that leaks from the solenoid valve could enter the cylinder and cause the lock to disengage over time.
- *Back pressure is required when releasing the lock. Before starting, make sure that air is supplied to the side that is not equipped with a lock mechanism as shown in the diagram above (or the side on which the piston rod is unlocked, if both sides are equipped with a lock). Otherwise, the lock may not disengage. (Refer to manufacturer's catalog for details on the lock release.)
- *Release the lock when mounting or adjusting the cylinder. The lock may not disengage if the cylinder is installed with its lock engaged.
- *Operate with a load ratio of 50% or less. The lock may not disengage or may become damaged if the load exceeds 50%.
- *Do not operate multiple synchronized cylinders. Avoid applications in which 2 or more end lock cylinders are synchronized to move 1 workpiece. Otherwise, one of the cylinder locks may not be disengaged when required.
- *Use a speed controller with meter-out control. If operated under meter-in control, the lock may not disengage.
- *Be sure to operate completely to the cylinder stroke end on the side with the lock. The lock may not engage or disengage if the piston in the cylinder has not reached the stroke end.
Other
- *The minimum stroke for mounting varies with the auto switch type and cylinder mounting type. In particular, the center trunnion type requires careful attention.
- *Product images are representative models.
- *See the SMC catalog for information other than that detailed above.