Product Description
The shaft sleeve incremental encoder series covers all application scenarios from small, standard to heavy load. The entire series adopts a metal casing with high impact resistance. It adopts a metal casing, has high impact resistance, wide voltage input, reverse/short circuit protection functions, adapts to harsh industrial environments, and meets the needs of high precision, high load, and high reliability.

Product parameters
EI40 | EC50 | EI58 | EI90 | EI100 | |
Shaft Diameter (mm) | Φ6H7/Φ8H7 | Φ6 / Φ8 / Φ10 / Φ12 / Φ14 / Φ15 / Φ1/4" / Φ3/8" / Φ1/2" / Φ5/8" | Φ8/Φ10/Φ12/Φ14/Φ15 | Φ20/Φ24/Φ25/Φ28/Φ30/Φ38/Φ40/Φ45H7 | Φ30/Φ38/Φ45/Φ50H7 |
Protection Rating | IP66 standard, IP67 optional | IP65; IP67 (optional) | IP65; IP67 (optional) | IP66 | IP65 |
Max. RPM | 6000 | 12000 (optional); 6000 | 12000 (optional); 6000 | 3500 | 3500 |
Max. Shaft Load | 60N axial; 100N radial | 40N axial; 80N radial | 40N axial; 80N radial | 80N axial; 140N radial | 80N axial; 140N radial |
Shock | 50G/11ms | ||||
Vibration | 10G 10~2000Hz | ||||
Bearing Life | 10⁹ revolutions | ||||
Moment of Inertia | Approximately 1.9×10⁻⁶ kgm² | Approximately 1.6×10⁻⁶ kgm² | Approximately 1.6×10⁻⁶ kgm² | Approximately 15×10⁻⁶ kgm² | Approximately 15×10⁻⁶ kgm² |
Starting Torque | <0.08Nm | <0.03Nm (IP65); <0.08Nm (IP67) | <0.03Nm (IP65); <0.08Nm (IP67) | <0.1Nm with oil seal | <0.1Nm with oil seal |
Body Material | Aluminum alloy | ||||
Casing Material | Zinc alloy | Aluminum alloy | |||
Operating Temperature | -20~+85℃ | -40~+85℃ | -20~+80℃ | -20~+80°C (-40~+80°C optional) | -20~+80°C (-40~+80°C optional) |
Storage Temperature | -25~+100℃ | -45~+90℃ | -40~+95℃ | -45~+85℃ | -45~+85℃ |
Weight | 110g | Approx. 400g | Approx. 400g | Approx. 900g | Approx. 900g |
Available Resolutions | 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 360, 400, 500, 512, 600, 800, 1000, 1024, 1200, 1250, 2000, 2500, 4000, 5000 | 100, 200, 300, 360, 400, 500, 512, 600, 800, 1000, 1024, 1200, 1250, 2000, 2048, 2500, 3600, 4096, 5000 | 256, 300, 360, 400, 500, 512, 600, 800, 1000, 1024, 1200, 1250, 2000, 2048, 2500, 3600, 4096, 5000 | 1024, 2048 | 1024, 2048 |
Notes | Bold text indicates stock availability; other resolutions are available upon request. | The above information indicates stock availability; other resolutions are available upon request. | |||
EI40
Electrical Characteristics
EI40 | ||
Output Type | RS422 | Push-pull |
Scale | Max. 5000 pulses/revolution | Max. 5000 pulses/revolution |
Power Supply (VDC) | 5 ± 0.25 or 10-30 | 45960 |
No-Load Current Consumption | ≤ 80mA | ≤ 100mA |
Channel Allowable Load Current | Max. ± 50mA | Max. ± 30mA |
Output Frequency | Max. 800kHz | Max. 800kHz |
Signal High Level | Min. 3.4V | Min. Ub-1.8 |
Signal Low Level | Max. 0.4V | Max. 2.0V |
Rise Time (Tr) | Max. 200ns | Max. 1μs |
Fall Time (Tf) | Max. 200ns | Max. 1μs |
Terminal Configuration
Signal | 0V | +Ub | A | `A | B | `B | Z | `Z | Shield |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | - |
Pin Number | 10 | 12 | 5 | 6 | 8 | 1 | 3 | 4 | PH |
Dimensional Drawings

EC50
Electrical Characteristics
EC50 | |||
Output Type | RS422 | Push-Pull | NPN open collector |
Power Supply (VDC) | 5 ± 0.25 or 10-30 | 10~30 | 10-30 |
Current Consumption (No Load) | Typ. 40mA | Typ. 50mA | Typ. 40mA |
Channel Allowable Load Current | Max. ± 20mA | Max. ±30mA | Max. ±20mA |
Output Frequency | Max. 300kHz | Max. 300kHz | Max. 300kHz |
Signal High Level | Min. 2.5V | Min. Ub -1V | Min. Ub -1V |
Signal Low Level | Max. 0.5V | Max. 0.5V | Max. 0.5V |
Rise Time (Tr) | Max. 200ns | Max. 1μs | Max. 1μs |
Fall Time (Tf) | Max. 200ns | Max. 1μs | Max. 1μs |
Terminal Configuration
Signal | 0V | +Ub | A | `A | B | `B | Z | `Z | Shield |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | - |
Pin Number | 10 | 12 | 5 | 6 | 8 | 1 | 3 | 4 | PH |
Dimensional Drawings

EI58
Electrical Characteristics
EI58 | ||
Output Type | RS422 | Push-Pull |
Power Supply (VDC) | 5±0.25 or 10~30 | 10~30 |
Current Consumption (No Load) | Typ. 40mA; Max. 90mA | Typ. 50mA;Max. 100mA |
Channel Allowable Load Current | Max. ±20mA | Max. ±30mA |
Output Frequency | Max. 300kHz | Max. 300kHz |
Signal High Level | Min. 2.5V | Min. Ub -1V |
Signal Low Level | Max. 0.5V | Max. 0.5V |
Rise Time (Tr) | Max. 200ns | Max. 1μs |
Fall Time (Tf) | Max. 200ns | Max. 1μs |
Terminal Configuration
Signal | 0V | +Ub | A | `A | B | `B | Z | `Z | - | Shield | |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | - | - | |
Pin Number | 10 | 12 | 5 | 6 | 8 | 1 | 3 | 4 | 11 | 2 | PH |
Dimensional Drawings

EI90
Electrical Characteristics
EI90 | |||
Output Type | RS422 | Push-Pull | Push-Pull 7272 |
Scale | Max. 2500ppr | Max. 2500ppr | Max. 2500ppr |
Power Supply (VDC) | 5±0.25 or 10-30 | 10-30 | 5-30 |
No-Load Current Consumption | Max. ≤80mA | Max. ≤125mA | Max. ≤125mA |
Channel Allowable Load Current | Max. ±20mA | Max. ±40mA | Max. ±40mA |
Output Frequency | Max. 300kHz | Max. 300kHz | Max. 300kHz |
Signal High Level | Min. 3.4V | Min. Ub-1.8 | Min. Ub-2.5 |
Signal Low Level | Max. 0.4V | Max. 2.0V | Max. 0.4V |
Rise Time (Tr) | Max. 200ns | Max. 1μs | Max. 1μs |
Fall Time (Tf) | Max. 200ns | Max. 1μs | Max. 1μs |
Terminal Configuration
Signal | 0V | +Ub | A | `A | B | `B | Z | `Z | - | Shield | |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | - | - | |
Pin Number | 10 | 12 | 5 | 6 | 8 | 1 | 3 | 4 | 11 | 2 | PH |
Dimensional Drawings

EI100
Electrical Characteristics
EI100 | |||
Output Type | RS422 | Push-Pull | Push-Pull 7272 |
Scale | Max. 2500ppr | Max. 2500ppr | Max. 2500ppr |
Power Supply (VDC) | 5±0.25 or 10-30 | 10-30 | 5-30 |
No-Load Current Consumption | Max. ≤80mA | Max. ≤125mA | Max. ≤125mA |
Channel Allowable Load Current | Max. ±20mA | Max. ±40mA | Max. ±40mA |
Output Frequency | Max. 300kHz | Max. 300kHz | Max. 300kHz |
Signal High Level | Min. 3.4V | Min. Ub-1.8 | Min. Ub-2.5 |
Signal Low Level | Max. 0.4V | Max. 2.0V | Max. 0.4V |
Rise Time (Tr) | Max. 200ns | Max. 1μs | Max. 1μs |
Fall Time (Tf) | Max. 200ns | Max. 1μs | Max. 1μs |
Terminal Configuration
Signal | 0V | +Ub | A | `A | B | `B | Z | `Z | - | Shield | |
Color Code | White | Brown | Green | Yellow | Gray | Pink | Blue | Red | - | - | |
Pin Number | 10 | 12 | 5 | 6 | 8 | 1 | 3 | 4 | 11 | 2 | PH |
Dimensional Drawings

Product Display
Rugged and durable: The metal housing and dual-bearing design resist shock and vibration, ensuring long mechanical life.
Environmentally adaptable: IP65–IP67 protection and a wide operating temperature range ensure adaptability to harsh operating conditions.
Easy installation: The space-saving sleeve-type structure supports various mounting methods, including spring plates and torsion arms.
High electrical reliability: Wide input voltage (5–30VDC) with reverse polarity and short-circuit protection.
High output performance: Supports RS422 and push-pull (HTL) outputs, with up to 5000 PPR and a frequency of 300kHz.
Flexible selection: Multiple shaft diameters, resolutions, and interfaces are available, with customization supported.
Quality Control
The quality of encoders is directly related to the stability and reliability of industrial automation systems. We have built a full-process quality control system, strictly screening suppliers from raw material procurement to ensure that the performance of core components meets standards; in the production process, we use high-precision equipment and standardized processes, and cooperate with online detection technology for real-time monitoring; in the finished product stage, we conduct rigorous tests such as high and low temperature, electromagnetic compatibility, and life aging to eliminate performance risks. Each encoder has passed multiple quality inspection levels, and its excellent quality has laid a solid foundation for intelligent manufacturing, providing customers with long-term and stable use guarantees.
Application Cases
In the sleeve-type incremental encoder series, the small EI40 is suitable for installation in the confined spaces of small automation equipment (such as compact servo motors and micro conveyors); the standard EI58/EC50 meets the needs of general industrial sites such as assembly line drive motors, general machine tools, and material handling equipment; and the heavy-duty EI90/EI100 is suitable for heavy industrial high-load applications such as metallurgical rolling mills, heavy mining machinery, and large ship drive shafts, covering a wide range of industrial application scenarios.











