Grayhill 25LR22-Q Rotary Encoder: Equivalent & Substitute Parts

Part Overview

The Grayhill 25LR22-Q is a 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 maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute models are identified within the Grayhill 25L series to accommodate applications requiring alternative pulse resolution specifications while maintaining core mechanical and electrical compatibility parameters.

Substiute Parts

25LR22-Q

Grayhill Inc.In Stock: 83225LR22-Q 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 are selected based on strict parameter matching within the Grayhill 25L series. The primary substitution criterion is mechanical and electrical compatibility: all substitute encoders maintain identical specifications for encoder type (mechanical), output type (quadrature incremental), actuator geometry (1/4" diameter flatted end), detent functionality, mounting configuration (panel and PCB through-hole), vertical orientation, PC pin termination, rotational life rating (100K cycles minimum), and compliance certifications (RoHS, REACH, MSL 1).

The key differentiating parameter among substitute parts is Pulses per Revolution (PPR). The 25LR22-Q operates at 16 PPR. Substitute models operate at alternative PPR values (12 PPR and 8 PPR), which affects rotational resolution but does not alter mechanical fit, mounting compatibility, or core electrical interface characteristics. Selection of a substitute encoder depends solely on the application's rotational resolution requirement.

All substitute parts maintain Active product status and full compliance certifications equivalent to or exceeding the main part specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Identical PPR): The 25LB22-Q is a direct mechanical and electrical equivalent to the 25LR22-Q, maintaining 16 PPR output. Both parts are Active status with full compliance certifications. The 25LB22-Q carries ROHS3 compliance, which exceeds the RoHS compliance of the main part. Selection between these two parts depends on packaging requirements and inventory availability.

Alternative Resolution Options: The 25LB30-Q (12 PPR) and 25LB45-Q (8 PPR) are mechanically and electrically compatible substitutes that provide lower rotational resolution. These parts are suitable for applications where coarser pulse resolution is acceptable. All three substitute parts maintain Active product status and equivalent or superior compliance certifications (ROHS3) compared to the main part.

Compliance Basis: All substitute parts maintain MSL 1 (unlimited moisture sensitivity), REACH Unaffected status, and Active product status. The substitute parts carry ROHS3 compliance, which represents current regulatory alignment. Selection should be based on application rotational resolution requirements and packaging specifications.

Frequently Asked Questions (FAQ)

Q: Can the 25LB22-Q replace the 25LR22-Q in all applications? A: Yes. The 25LB22-Q maintains identical mechanical fit, electrical interface, and performance specifications (16 PPR quadrature output). Both parts are mechanically mounted identically and use PC pin termination. The primary difference is packaging format and compliance certification level (ROHS3 vs. RoHS Compliant).

Q: What is the impact of selecting a lower PPR substitute such as 25LB30-Q or 25LB45-Q? A: Lower PPR values reduce rotational resolution. The 25LB30-Q provides 12 pulses per revolution instead of 16, and the 25LB45-Q provides 8 pulses per revolution. Mechanical mounting, actuator geometry, detent function, and electrical interface remain identical. Selection depends on whether the application can function with reduced resolution.

Q: Are all substitute parts mechanically interchangeable? A: Yes. All substitute parts share identical actuator type (1/4" diameter flatted end), mounting configuration (panel and PCB through-hole), orientation (vertical), and termination style (PC pin). Physical installation is identical across all parts.

Q: What compliance certifications apply to substitute parts? A: All substitute parts carry ROHS3 compliance, MSL 1 (unlimited), and REACH Unaffected status. These certifications meet or exceed the main part specifications and are suitable for regulated applications.

Q: Does packaging format affect electrical or mechanical performance? A: No. Packaging format (bulk vs. standard) does not affect encoder performance, specifications, or compatibility. Packaging selection is based on procurement and inventory management requirements.

Q: What is the minimum rotational life specification for all parts? A: All parts, including the main part and all substitutes, are rated for a minimum of 100,000 rotational cycles, ensuring equivalent mechanical durability.