Grayhill 63RS50 Rotary Encoder Optical 50PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 63RS50 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 PCB through-hole mounting with PC pin termination. The part is currently active in production with 694 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this encoder category. Alternative models may be required due to inventory constraints, application-specific resolution requirements, or supply chain considerations.

Substiute Parts

63RS50

Grayhill Inc.In Stock: 71063RS50 Datasheet

Current PartRFQ

63R32

Grayhill Inc.In Stock: 105863R32 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 63RS50 are identified within the Grayhill 63R series based on the following critical parameters that must remain constant:

Fixed Parameters (Non-Negotiable for Substitution):

• Encoder Type: Optical
• Output Type: Quadrature (Incremental)
• Supply Voltage: 5V
• Actuator Type: 1/4" Dia Flatted End
• Mounting Type: PCB, Through Hole
• Orientation: Vertical
• Termination Style: PC Pin
• Rotational Life: 300M cycles minimum
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter (Allows Substitution):

• Pulses per Revolution (PPR): May differ based on application resolution requirements

The 63R32 is classified as a substitute part because it maintains all fixed parameters while offering a different PPR specification (32 PPR versus 50 PPR). This substitution is valid when application firmware or signal processing can accommodate the alternative resolution.

Parameter Comparison

Engineering Selection Recommendations

Both the 63RS50 and 63R32 are active production parts with ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory compliance in industrial and commercial environments.

The 63RS50 provides 50 pulses per revolution, delivering higher resolution output for applications requiring finer positional feedback or speed measurement accuracy. The 63R32 provides 32 pulses per revolution, suitable for applications where lower resolution is acceptable or where reduced signal frequency is preferred.

Selection between these parts depends solely on the application's resolution requirements. Both parts share identical mechanical interfaces, electrical characteristics, and compliance certifications. The choice of PPR specification must be validated against the application's signal processing capabilities and firmware implementation.

Frequently Asked Questions (FAQ)

Q: Can the 63R32 be used as a direct replacement for the 63RS50?

A: The 63R32 is mechanically and electrically compatible with the 63RS50 in terms of mounting, voltage supply, and physical interface. However, the PPR difference (32 versus 50) affects the resolution of position and speed measurements. Substitution is valid only if the application firmware and signal processing can accommodate 32 PPR output instead of 50 PPR.

Q: What is the primary difference between these substitute parts?

A: The only difference between the 63RS50 and 63R32 is the pulses per revolution specification. All other parameters, including encoder type, output format, supply voltage, mounting configuration, and compliance certifications, are identical.

Q: Are both parts available in the same packaging?

A: Yes, both the 63RS50 and 63R32 are supplied in bulk packaging with PCB through-hole mounting and PC pin termination.

Q: Do these encoders require any special handling or storage conditions?

A: Both encoders have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the 63RS50 and 63R32 are ROHS3 compliant and REACH unaffected, making them equivalent from a regulatory and compliance perspective.

Q: How does PPR affect system performance?

A: PPR determines the resolution of the encoder output. The 63RS50 with 50 PPR provides finer resolution, generating more pulses per complete rotation. The 63R32 with 32 PPR generates fewer pulses per rotation. The choice depends on the application's required measurement precision and the signal processing capability of the receiving circuit or microcontroller.