Grayhill 61KS50 Rotary Encoder Optical 50PPR - Equivalent & Substitute Parts

Part Overview

The Grayhill 61KS50 is an optical rotary encoder with 50 pulses per revolution (PPR), designed for incremental quadrature output applications. This encoder features a 1/4" diameter flatted end actuator, vertical orientation, and panel/PCB through-hole mounting. The 61KS50 operates at 5V supply voltage and delivers 10 million cycles of rotational life. This part is currently in active product status with 899 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's functional requirements, enabling direct replacement in applications where the specified performance characteristics are maintained.

Substiute Parts

61KS50

Grayhill Inc.In Stock: 94061KS50 Datasheet

Current PartRFQ

EM14A0D-C24-L032N

Bourns Inc.In Stock: 1184EM14A0D-C24-L032N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Grayhill 61KS50 are identified based on strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Encoder Type: Optical
• Output Type: Quadrature (Incremental)
• Voltage - Supply: 5V
• Actuator Type: 1/4" Dia Flatted End
• Mounting Type: Panel, PCB Through Hole
• Orientation: Vertical
• Termination Style: PC Pin

Allowable Variation Parameters:

• Pulses per Revolution (PPR): Substitute parts may differ in resolution; application requirements determine acceptability
• Rotational Life (Cycles Min): Substitute parts may have different cycle ratings; application duty cycle determines suitability
• Compliance Certifications: Substitute parts must maintain equivalent or superior compliance status

The Bourns EM14A0D-C24-L032N is identified as a substitute based on matching encoder type, output type, supply voltage, actuator type, mounting configuration, orientation, and termination style. The primary difference is the PPR specification (32 PPR versus 50 PPR), which represents a resolution variation that may be acceptable depending on application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (Grayhill 61KS50): The Grayhill 61KS50 is recommended for applications requiring 50 PPR resolution and 10 million cycle rotational life. This part maintains active product status and full ROHS3 compliance. Current inventory of 899 units supports immediate availability.

Substitute Part Selection (Bourns EM14A0D-C24-L032N): The Bourns EM14A0D-C24-L032N is suitable as a substitute when application requirements permit 32 PPR resolution and 1 million cycle rotational life. This part maintains ROHS3 compliance and active product status. Inventory of 1081 units provides alternative sourcing. The substitute is appropriate for applications where lower resolution and reduced cycle rating are acceptable trade-offs.

Compliance Considerations: Both parts maintain ROHS3 compliance and EAR99 ECCN classification. The Grayhill 61KS50 carries REACH Unaffected status, while the Bourns substitute is REACH Affected. Applications subject to REACH regulations must verify compliance requirements before substitution.

Frequently Asked Questions (FAQ)

Q: Can the Bourns EM14A0D-C24-L032N directly replace the Grayhill 61KS50 in all applications?

A: Direct replacement is possible only when application requirements accommodate the lower PPR specification (32 versus 50) and reduced rotational life rating (1M versus 10M cycles). Mechanical and electrical interfaces are compatible. Resolution and durability requirements must be evaluated for each specific application.

Q: What is the primary difference between these two encoders?

A: The main differences are pulses per revolution (50 PPR for Grayhill versus 32 PPR for Bourns) and rotational life rating (10M cycles versus 1M cycles). All other electrical and mechanical parameters are equivalent.

Q: Are both parts suitable for 5V supply voltage applications?

A: Yes. Both the Grayhill 61KS50 and Bourns EM14A0D-C24-L032N operate at 5V supply voltage and are compatible with standard 5V logic circuits.

Q: Do these encoders use the same mounting configuration?

A: Yes. Both parts feature panel and PCB through-hole mounting with vertical orientation and PC pin termination, enabling installation in identical mechanical configurations.

Q: What are the compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry EAR99 ECCN classification. The Grayhill 61KS50 is REACH Unaffected, while the Bourns EM14A0D-C24-L032N is REACH Affected. Applications in REACH-regulated markets must verify compliance status.

Q: How does the PPR difference affect application performance?

A: The 50 PPR specification provides finer resolution than the 32 PPR substitute. Applications requiring precise position measurement or high-resolution feedback should retain the Grayhill 61KS50. Applications with lower resolution requirements can accommodate the Bourns substitute.

Q: Is the rotational life difference significant for typical applications?

A: The 10M cycle rating of the Grayhill 61KS50 supports extended-duty applications, while the 1M cycle rating of the Bourns substitute is suitable for moderate-duty applications. Application duty cycle and expected service life determine whether the difference is significant.