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| PartNumber | 61R128-050 | 61R128-040 | 61R128 |
| Description | Encoders Encoder, Standard, 5-pin, 128 cycles, 5.0in. cable, quadrature | Encoders 61R128-040 61R128-040 cycles, pins, quadrature | Encoders Encoder Std 5-pin 128 cycles |
| Manufacturer | Grayhill Inc. | Grayhill Inc. | Grayhill Inc. |
| Product Category | Encoders | Encoders | Encoders |
| Series | 61R | 61R | 61R |
| Termination Style | Cable with Connector | Cable with Connector | PC Pin |
| Mounting Type | Panel Mount | Panel Mount | Panel, PCB Through Hole |
| Output Type | Quadrature (Incremental) | Quadrature (Incremental) | Quadrature (Incremental) |
| Voltage Supply | 5V | 5V | 5V |
| Actuator Type | 1/4" Dia Flatted End | 1/4" Dia Flatted End | 1/4" Dia Flatted End |
| Orientation | Vertical | Vertical | Vertical |
| Encoder Type | Optical | Optical | Optical |
| Pulses per Revolution | 128 | 128 | 128 |
| Detent | No | No | No |
| Built in Switch | No | No | No |
| Rotational Life Cycles Min | 10M | 10M | 10M |
| Product | - | - | Optical |
| Type | - | - | Incremental |
| Packaging | - | - | Tray |
| Mounting Style | - | - | Panel |
| Operating Temperature Range | - | - | - 40 C to + 85 C |
| Technology | - | - | Rotary |
| Size Dimension | - | - | 31.75 mm x 31.75 mm x 31.13 mm |
| Number of Channels | - | - | 2 Channel |
| Resolution | - | - | 128 PPR |
| Bushing Thread | - | - | 3/8-32 UNEF-2A |
| Shaft Diameter | - | - | 6.34 mm |
| Shaft Type | - | - | Flatted |
| Operating Supply Voltage | - | - | 5 VDC |
| Bushing Size | - | - | 3/8 in x 0.35 in |
| With Switch | - | - | No Switch |
| Bushing Material | - | - | Aluminum |
| Shaft Length | - | - | 9.51 mm |