Grayhill 25LR22-Q-Z Rotary Encoder Mechanical 16PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 25LR22-Q-Z is an active mechanical rotary encoder with 16 pulses per revolution (PPR) output in quadrature (incremental) format. This vertical-orientation encoder features a 1/4" diameter flatted end actuator, detent mechanism, and PC pin termination for panel and PCB through-hole mounting applications. The part is RoHS Compliant and REACH Unaffected, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching mechanical, electrical, and compliance parameters within the Grayhill 25L series.

Substiute Parts

25LR22-Q-Z

Grayhill Inc.In Stock: 92725LR22-Q-Z Datasheet

Current PartRFQ

25LB22-Q

Grayhill Inc.In Stock: 202525LB22-Q Datasheet

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25LB30-Q

Grayhill Inc.In Stock: 113825LB30-Q Datasheet

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25LB45-Q

Grayhill Inc.In Stock: 111925LB45-Q Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 25LR22-Q-Z are identified from the Grayhill 25L series based on strict parameter matching. All substitute candidates share the following critical parameters with the main part:

• Mechanical encoder type with quadrature (incremental) output
• 1/4" diameter flatted end actuator
• Detent mechanism present
• No built-in switch
• Panel and PCB through-hole mounting capability
• Vertical orientation
• PC pin termination
• 100K minimum rotational life cycles
• RoHS and REACH compliance
• MSL 1 rating

Substitutes are grouped by pulses per revolution (PPR) specification, which is the primary differentiating parameter. The 25LR22-Q-Z operates at 16 PPR. Alternative PPR ratings (12 PPR and 8 PPR) are available in the same series but represent functional variations rather than direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same PPR): The 25LB22-Q is a direct functional equivalent to the 25LR22-Q-Z. Both parts operate at 16 PPR with identical mechanical, electrical, and compliance specifications. The primary difference is packaging: 25LR22-Q-Z is supplied in standard packaging, while 25LB22-Q is supplied in bulk packaging. Both maintain active product status and ROHS3 compliance. Selection between these two parts depends on packaging requirements and inventory availability.

Alternative Resolution Options (Different PPR): The 25LB30-Q (12 PPR) and 25LB45-Q (8 PPR) are functional alternatives within the same mechanical encoder family. These parts share all mechanical, mounting, and compliance characteristics with the main part but provide different output resolutions. Selection of these alternatives requires application-level assessment of resolution requirements and is appropriate only when lower PPR output is acceptable for the target application.

All substitute parts maintain the same rotational life rating (100K cycles minimum), detent mechanism, actuator geometry, and compliance certifications as the main part.

Frequently Asked Questions (FAQ)

Q: Can the 25LB22-Q directly replace the 25LR22-Q-Z? A: Yes. The 25LB22-Q is a direct functional equivalent with identical electrical and mechanical specifications. Both operate at 16 PPR with the same actuator type, detent mechanism, mounting configuration, and compliance ratings. The difference is packaging format (bulk versus standard).

Q: What is the primary difference between the 25LR22-Q-Z and the 25LB30-Q? A: The primary difference is pulses per revolution (PPR). The 25LR22-Q-Z outputs 16 PPR, while the 25LB30-Q outputs 12 PPR. All other mechanical, electrical, and compliance parameters are identical. Selection depends on whether the application can operate with reduced resolution.

Q: Are all substitute parts RoHS compliant? A: Yes. The main part (25LR22-Q-Z) is RoHS Compliant. All substitute parts (25LB22-Q, 25LB30-Q, 25LB45-Q) are ROHS3 Compliant, which represents an updated compliance standard. Both certifications satisfy RoHS requirements.

Q: Can the 25LB45-Q (8 PPR) be used in place of the 25LR22-Q-Z (16 PPR)? A: The 25LB45-Q shares all mechanical and compliance characteristics with the 25LR22-Q-Z but provides half the output resolution (8 PPR versus 16 PPR). Substitution is possible only if the application can function with reduced encoder resolution.

Q: What is the significance of the packaging difference between 25LR22-Q-Z and 25LB22-Q? A: The 25LR22-Q-Z is supplied in standard packaging, while the 25LB22-Q is supplied in bulk packaging. Functionally, both parts are identical. Packaging selection depends on order quantity requirements and inventory management practices.

Q: Are all substitute parts rated for the same rotational life? A: Yes. The main part and all substitute parts are rated for a minimum of 100K rotational life cycles. This specification is consistent across the 25L series encoders listed.

Q: Do all substitute parts have the same termination style? A: Yes. All parts use PC pin termination, which is compatible with panel and PCB through-hole mounting configurations.