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| PartNumber | EMS22Q51-D28-LT1 | EMS22Q51-D28-LT4 | EMS22Q51-D28-LW4 |
| Description | Encoders ENCODER - ROTARY MAGNETIC | Encoders Incremental Encoder | Encoders Incremental Encode |
| Manufacturer | Bourns | Bourns | Bourns Inc. |
| Product Category | Encoders | Encoders | Encoders |
| Series | EMS22Q | EMS22Q | EMS22Q |
| Product | Magnetic Encoders | Magnetic Encoders | Magnetic |
| Type | Incremental | Incremental | Incremental |
| Technology | Magnetic | Magnetic | Rotary |
| Brand | Bourns | Bourns | - |
| Product Type | Encoders | Encoders | - |
| Subcategory | Encoders | Encoders | - |
| RoHS | - | Y | - |
| Mounting Style | - | Panel Mount | Servo |
| Resolution | - | 256 PPR | 256 PPR |
| Number of Detents | - | No Detent | No Detent |
| Number of Channels | - | 3 Channel | 3 Channel |
| Termination Style | - | Through Hole | PC Pin |
| Output Type | - | Quadrature with Index | Quadrature (Incremental) |
| Shaft Diameter | - | 1/8 in | 1/8 in |
| Shaft Type | - | Round / Plain | Round / Plain |
| With Switch | - | No Switch | No Switch |
| Operating Supply Voltage | - | 5 VDC | 5 VDC |
| Bushing Size | - | 3/8 in x 3/8 in | No Bushing |
| Size / Dimension | - | 21 mm x 16 mm | - |
| Bushing Material | - | Metal | Metal |
| Bushing Thread | - | 3/8-32 UNEF-2A | - |
| Maximum Operating Temperature | - | + 125 C | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Shaft Length | - | 7/8 in | 7/8 in |
| Factory Pack Quantity | - | 42 | - |
| Unit Weight | - | 0.388014 oz | 0.388014 oz |
| Operating Temperature Range | - | - | - 40 C to + 125 C |
| Mounting Type | - | - | Panel Mount |
| Size Dimension | - | - | 21 mm x 16 mm |
| Voltage Supply | - | - | 5V |
| Actuator Type | - | - | 1/8" Dia Round End |
| Orientation | - | - | Vertical |
| Encoder Type | - | - | Magnetic |
| Pulses per Revolution | - | - | 256 |
| Detent | - | - | No |
| Built in Switch | - | - | - |
| Rotational Life Cycles Min | - | - | 50M |