



Encoders Incremental
A020
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This Product will be discontinued: December 31, 2025.
A new / comparable product is available for this product.
Large hollow shaft up to 42 mm.
The incremental encoder A020 with optical sensor technology is available with through hollow shaft up to a maximum diameter of 42 mm.
With an installation depth of only 43 mm, it is ideally suited for mounting on large shafts even in tight installation situations.
Mechanical | |
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Dimension | Ø 100 mm |
Shaft type |
20 mm hollow shaft, through 24 mm hollow shaft, through 25 mm hollow shaft, through 28 mm hollow shaft, through 30 mm hollow shaft, through 38 mm hollow shaft, through 40 mm hollow shaft, through 42 mm hollow shaft, through 1 " hollow shaft, through |
Flange type |
Ø 100.00 mm Ø 115.00 mm |
Working temperature | -40 °C ... +70 °C |
Protection level |
IP65 |
Connection types |
Radial cable M23 connector radial M12 connector radial |
Max. rotational speed |
3.000 min-1 |
Weight | 700 g |
Electrical | |
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Scanning | optical |
Resolution max. |
5.000 ppr incremental |
Power supply |
5 V DC 5...30 V DC 10...30 V DC |
Interfaces |
Gegentakt TTL / RS422 SinCos |
Options | |
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on request |
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- Low installation depth with large hollow shaft at the same time
- Available with compact M12 connector
- Torque brackets can also be implemented with a small radius
- With push-pull, RS422 or SinCos interface.
- Hollow shaft from 20 mm to 42 mm as standard.
- With cable connection, M12 or M23 plug.
Accessories

Tether arm, 70 mm
For encoders A020, A02H, H120Mounting radius max. 135 mm
For applications with low axial and radial play, flexibly adjustable.
Scope of delivery
- Mounting arm
- 2 Allen screws M2.5 x 6
- 2 toothed lock washers
Connection to the application (not included in delivery)
- 1 screw
8.0010.40S0.0000 |

Tether arm, long
For encoders A020, A02H, H120Mounting radius max. 165 mm
For applications with low axial and radial play, flexibly adjustable.
Scope of delivery
- Mounting arm
- 2 Allen screws M2.5 x 6
- 2 toothed lock washers
Connection to the application (not included in delivery)
- 1 screw
8.0010.40T0.0000 |

Tether arm, 150 mm
For encoders A020, A02H, H120Mounting radius max. 215 mm
For applications with low axial and radial play, flexibly adjustable.
Scope of delivery
- Mounting arm
- 2 Allen screws M2.5 x 6
- 2 toothed lock washers
Connection to the application (not included in delivery)
- 1 screw
8.0010.40U0.0000 |

Stator coupling
For encoders A020, A02H, H120
Pitch circle diameter 59.5 mm
For applications with axial and radial play at high dynamics.
Scope of delivery
- Stator coupling (stainless steel)
- 4 screws for mounting on the encoder
Connection to the application (not included in delivery)
- 2 screws
8.0010.40V0.0000 |

Fastening arm, long
For encoders A020, A02HMounting radius 52 ... 103 mm
For applications with axial and radial play at low dynamics.
Scope of delivery
- Torque support (stainless steel)
- 3 screws for mounting on the encoder
Connection to the application (not included in delivery)
- 1 screw
8.0010.4E00.0000 |

Spring element, short
For encoders A020, A02HPitch circle diameter 76 mm
For applications with limited installation space.
Scope of delivery
- Spring element (stainless steel)
- 2 screws for mounting on the encoder
Connection to the application (not included in delivery)
- Parallel pin 8.0010.4700.0003
8.0010.4J00.0000 |

Spring element, long
For encoders A020, A02HMounting radius 27 ... 36 mm
For applications with high axial play.
Scope of delivery
- Spring element (stainless steel)
- 2 screws for mounting on the encoder
Connection to the application (not included in delivery)
- Parallel pin 8.0010.4700.0003
8.0010.4K00.0000 |

Fastening arm, short
For encoders A020, A02HMounting radius 74.5 mm
For applications with axial play.
Scope of delivery
- Torque support (stainless steel)
- 3 screws for mounting on the encoder
- Mounting accessories for attachment to the application
8.0010.4T00.0000 |