Grayhill 61SS64-2 Rotary Encoder Optical 64PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 61SS64-2 is an optical rotary encoder with 64 pulses per revolution (PPR), delivering quadrature incremental output at 5V supply voltage. This vertical-mount, PCB through-hole component features a 1/4" diameter flatted end actuator with detent positioning and is rated for 10 million rotational cycles minimum. The part is Active status and RoHS Compliant, making it suitable for industrial control, automation, and precision measurement applications where high-resolution angular position feedback is required.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when system design requires alternative resolution specifications or manufacturer sourcing options while maintaining core functional compatibility.

Substiute Parts

61SS64-2

Grayhill Inc.In Stock: 74761SS64-2 Datasheet

Current PartRFQ

62F22-01-P-L

Grayhill Inc.In Stock: 121062F22-01-P-L Datasheet

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62S11-M0-P

Grayhill Inc.In Stock: 87162S11-M0-P Datasheet

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62S22-M0-P

Grayhill Inc.In Stock: 72162S22-M0-P Datasheet

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HRPG-AD32#13R

Broadcom LimitedIn Stock: 788HRPG-AD32#13R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 61SS64-2 is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

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

Variable Parameters (Resolution-Dependent Substitution):

• Pulses per Revolution: 16, 32, or 64 PPR
• Rotational Life: 1M or 10M cycles
• Manufacturer: Grayhill Inc. or Broadcom Limited
• RoHS Status: RoHS Compliant or ROHS3 Compliant

The substitute parts listed below maintain all mandatory parameters while offering alternative PPR specifications and rotational life ratings. Selection depends on application resolution requirements and duty cycle specifications.

Parameter Comparison

Engineering Selection Recommendations

61SS64-2 (Primary Part): Select when 64 PPR resolution and 10 million cycle rotational life are required. RoHS Compliant status supports legacy compliance requirements. Suitable for high-resolution applications with extended operational duty cycles.

62S11-M0-P (32 PPR Alternative): Grayhill Inc. manufacturer continuity with 32 PPR resolution. ROHS3 Compliant status meets current regulatory standards. Appropriate for applications requiring half the resolution of the primary part with standard 1 million cycle life. Same series (62S) as 62S22-M0-P.

HRPG-AD32#13R (32 PPR Cross-Manufacturer): Broadcom Limited optical encoder with identical 32 PPR specification and 5V supply. ROHS3 Compliant. Provides alternative manufacturer sourcing for 32 PPR applications. Maintains all mechanical and electrical interface compatibility.

62F22-01-P-L and 62S22-M0-P (16 PPR Options): Both deliver 16 PPR resolution with 1 million cycle life and ROHS3 Compliance. 62F22-01-P-L (62F series) and 62S22-M0-P (62S series) represent alternative Grayhill product lines for quarter-resolution applications. Selection between these two depends on series-specific design requirements.

All substitute parts maintain Active product status and REACH Unaffected classification, ensuring regulatory compliance and supply chain viability.

Frequently Asked Questions (FAQ)

Q: Can the 62S11-M0-P (32 PPR) directly replace the 61SS64-2 (64 PPR)?

A: The 62S11-M0-P maintains all mechanical and electrical interface parameters (5V supply, 1/4" flatted actuator, PCB through-hole mounting, vertical orientation, PC pin termination, detent). However, it delivers 32 PPR instead of 64 PPR. Direct replacement is possible only if the application can tolerate half the angular resolution. Verify system firmware or signal processing can accept the lower pulse count.

Q: What is the difference between 62F22-01-P-L and 62S22-M0-P?

A: Both parts deliver 16 PPR, 5V supply, and identical mechanical interfaces. The primary difference is series designation: 62F22-01-P-L belongs to the 62F series with Bulk packaging, while 62S22-M0-P belongs to the 62S series. Both are ROHS3 Compliant with 1 million cycle rotational life. Selection depends on design documentation specifying series compatibility.

Q: Why does the 61SS64-2 have 10M rotational life while substitutes have 1M?

A: The 61SS64-2 is rated for 10 million cycles minimum, indicating higher duty cycle capability. Substitute parts (62S11-M0-P, 62S22-M0-P, 62F22-01-P-L, HRPG-AD32#13R) are rated for 1 million cycles. Select the 10M-rated primary part for continuous or high-frequency rotation applications. Use 1M-rated substitutes for intermittent or low-frequency positioning applications.

Q: Is HRPG-AD32#13R compatible with Grayhill-specified designs?

A: The HRPG-AD32#13R (Broadcom Limited) maintains all mandatory interface parameters: optical encoder type, quadrature incremental output, 5V supply, 1/4" flatted actuator, detent, PCB through-hole mounting, vertical orientation, and PC pin termination. It is mechanically and electrically compatible. However, verify that system design does not specify Grayhill manufacturer exclusivity or series-specific requirements.

Q: Can I use a 16 PPR part in a system designed for 64 PPR?

A: No. The 16 PPR parts (62F22-01-P-L, 62S22-M0-P) deliver one-quarter the pulse resolution. This requires corresponding changes to system firmware, signal processing algorithms, and calibration. Use only if application requirements explicitly permit reduced angular resolution.

Q: What packaging formats are available?

A: The primary part 61SS64-2 uses standard packaging (not specified as Bulk). Substitute parts are supplied in Bulk packaging. Verify bulk packaging compatibility with assembly and inventory management procedures before selection.

Q: Are all parts RoHS compliant?

A: The 61SS64-2 is RoHS Compliant. All substitute parts are ROHS3 Compliant, which represents the current RoHS 3 directive standard. Both compliance levels are acceptable for new designs; ROHS3 is preferred for future-proofing.