CRA1□□U Series Angle Adjustable Rotary Actuator, Rack & Pinion Type
Caution
- See the catalog for specification details.
- Product images may be representative images. Refer to the manufacturer's catalog for shape details.
Product Description
A rotary actuator that can be mounted according to the operating conditions.
[Features]
· Compact auto switches are mountable (D-M9□).
· The cushion seal is replaceable.
· Easy adjustment of the cushion valve.
· The ports, cushion valve and auto switch are all located on the same surface for improved usability.
· Many variations of shaft type.
· Angle can be adjusted to the desired level in a range of up to 90°.
· CRA1: basic type / CDRA1: with auto switch.
· Size: 50, 63, 80, 100.
CRA1□□U Series Angle Adjustable Rotary Actuator (Equipped With Angle Adjustment Mechanism), Rack & Pinion Type Specifications
Mountable on 2 surfaces
Auto switch can be mounted from the front
| Type | Pneumatic | |||
|---|---|---|---|---|
| Size | 50 | 63 | 80 | 100 |
| Fluid | Air (non-lube) | |||
| Max. operating pressure | 1.0 MPa | |||
| Min. operating pressure | 0.1 MPa | |||
| Ambient and fluid temperature | 0°C to 60°C (no freezing) | |||
| Cushion | None | |||
| Backlash | Within 1° | |||
| Angle adjustment range | Max. 90 ° | |||
- *Refer to the manufacturer's catalog for details about the effective torque, allowable kinetic energy, and adjustable range of rotation time safe in operation.
Rotation Range of Keyway / Angle Adjustment
Conceptual image of rotation range of keyway and angle adjustment for CRA1□□U Series
The shaft rotates clockwise when the pressure is applied from the A port.
The clockwise rotation end position is adjusted using the angle adjusting screw.
- *Take appropriate measures so that no excessive external impact or vibration is applied to the angle adjusting screw. Failure to do so may cause the angle adjusting screw to become loose or drop.
Adjustment angle per rotation of angle adjusting screw
- Size 50: 9.5 °
- Size 63: 9.4 °
- Size 80: 8.2 °
- Size 100: 6.8 °
Dimensions
Basic type: C□RA1BSU
Size 50, 63, 80, 100 / single shaft / C□RA1BSU dimensional drawing
- Drawing shows the appearance for rotation of 90° and 100°.
- Dimensions show pressurization to B port.
- Drawing shows the auto switch mounted on the port side.
- *Values in ( ) are the dimensions for rotation of 180° and 190°.
(Unit: mm)
| Size | Port size*1 | A | B | C | D (g6) | DD (h9) | F | H | J | K |
|---|---|---|---|---|---|---|---|---|---|---|
| 50 | Rc 1/8 | 62 | 48 | 46 | 15 | 25 | 2.5 | 36 | M8 × 1.25 Depth 8 | 5 |
| 63 | Rc 1/8 | 76 | 60 | 57 | 17 | 30 | 2.5 | 41 | M10 × 1.5 Depth 12 | 5 |
| 80 | Rc1/4 | 92 | 72 | 70 | 20 | 35 | 3 | 50 | M12 × 1.75 Depth 13 | 5 |
| 100 | Rc3/8 | 112 | 85 | 85 | 25 | 40 | 4 | 60 | M12 × 1.75 Depth 14 | 5 |
| Size | With auto switch | Without auto switch | U | W | BA | BB | BC | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| S | SB | SC | SD | SE | S | ||||||
| 50 | 156 (189) | 1.5 | 5 | 14.5 | 33 | 144 (177) | 98 | 17 | 17 | 8.5 | 6 |
| 63 | 175 (213.5) | 1.5 | 5 | 21.5 | 33 | 163 (201.5) | 117 | 19.5 | 20 | 10 | 7 |
| 80 | 199 (243) | 1.5 | 5 | 29.5 | 33 | 186 (230) | 142 | 22.5 | 23.5 | 12 | 8 |
| 100 | 259 (325) | 1.5 | 5 | 39.5 | 33 | 245 (311) | 172 | 28 | 25 | 12.5 | 8 |
(Unit: mm)
| Size | AU | BU | CU | SU | MU | Key dimensions*2 | |
|---|---|---|---|---|---|---|---|
| b | L1 | ||||||
| 50 | 9.5 | 6 | 19 | 33 | M12 × 1.75 | 5 (-0.030 to 0) | 25 |
| 63 | 10.5 | 6 | 22 | 35.5 | M14 × 2 | 6 (-0.030 to 0) | 30 |
| 80 | 12.5 | 8 | 24 | 44 | M16 × 2 | 6 (-0.030 to 0) | 40 |
| 100 | 14.5 | 10 | 30 | 56 | M20 × 2.5 | 8 (-0.036 to 0) | 45 |
*1 In addition to Rc, G, NPT and NPFT are also available.
*2 A parallel key is included in the same package (but not assembled).
The dimensions of the shaft type (W: double shaft, X: single shaft with four chamfers, Y: double shaft with key, Z: double shaft with four chamfers, T: single round shaft, J: double shaft [round shaft, with four chamfers], K: double round shaft), foot type and flange type are the same as the standard type. See the manufacturer's catalog for details.
Drawing
CRA1□□U Series structure drawing
With auto switch structure drawing
| No. | Description | Material | Note |
|---|---|---|---|
| 1 | Main body | Aluminum alloy | Anodized |
| 2 | Right cover | Aluminum alloy | Metallic coating |
| 3 | Left cover | Aluminum alloy | Metallic coating |
| 4 | Right piston | Aluminum alloy | - |
| 5 | Left piston | Aluminum alloy | - |
| 6 | Shaft | Alloy steel | - |
| 7 | Rack | Carbon steel | Nitrided |
| 8 | Slider | Resin | - |
| 9 | Bearing retainer | Aluminum alloy | Chromate |
| 10 | Tube gasket | NBR | - |
| 11 | Piston seal | NBR | - |
| 12 | Bearing | High carbon chrome bearing steel | - |
| 13 | Hex socket head cap screw with washer | Alloy steel | Zinc chromated |
| 14 | Spring pin | Steel | Zinc chromated |
| 15 | Parallel key | Carbon steel | - |
| 16 | Connecting screw | Carbon steel | Zinc chromated |
| 17 | Cross-head pan head tapping screw | Steel | Zinc chromated |
| 18 | Wear ring | Resin | - |
| 19 | Stopper | Carbon steel | Zinc chromated |
| 20 | Hex socket head set screw (flat point) | Alloy steel | Zinc chromated |
| 21 | Hex nut | Steel | Zinc chromated |
| 22 | Seal washer | NBR | - |
| 23 | O-ring | NBR | - |
| 24 | Angle adjusting collar | Carbon steel | Zinc chromated |
| 25 | Auto switch | - | - |
| 26 | Magnet | - | - |
| 27 | Switch spacer | Resin | - |
Precautions
Caution on Design
- *Do not use a rotary actuator of the air-hydro type near fire or on equipment or machinery whose ambient temperature exceeds 60°C.
Since the air-hydro type uses a flammable hydraulic fluid, there is a danger of potential fire. - *Do not use in an environment, equipment, or machine that is not compatible with oil mist.
Rotary actuators of the air-hydro type generate an oil mist during operation which may affect the environment. - *Be sure to install an exhaust cleaner on the directional control valve for the rotary actuator of the air-hydro type.
A very small amount of hydraulic fluid is discharged from the exhaust port of the rotary actuator of the air-hydro type's directional control valve, which may contaminate the surrounding area. - *Install a rotary actuator of the air-hydro type in locations where it can be serviced easily.
Since the rotary actuator of the air-hydro type requires maintenance, such as refilling of hydraulic fluid and bleeding of air, ensure sufficient space for these activities. - *Do not use in cases where external leakage of hydraulic oil may adversely affect equipment or machinery.
Although it occurs in minute amounts, a certain amount of sliding leakage from the piston seal is unavoidable with the rotary actuator of the air-hydro type. Because of the construction of the rotary actuator of the air-hydro type, hydraulic oil may leak into the outside due to sliding leakage.
Caution on Selection
- *Air hydro-type rotary actuators should be selected in combination with the air-hydro unit.
Selecting a proper air-hydro unit is necessary for good operation of the rotary actuator of the air-hydro type. - *Use self-align fittings in conjunction with the piping for the rotary actuator of the air-hydro type.
Do not use a single-action fitting with the piping for the rotary actuator of the air-hydro type, as this may result in oil leakage. - *See the manufacturer's catalog for product information other than the above.