Grayhill 25LR10-Q-Z Rotary Encoder Mechanical 36PPR: Equivalent & Substitute Parts

Part Overview

The Grayhill 25LR10-Q-Z is an active mechanical rotary encoder with 36 pulses per revolution (PPR), quadrature output, and vertical orientation. This component is designed for panel and PCB through-hole mounting applications requiring incremental position feedback. The part is RoHS Compliant and REACH Unaffected, with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required, or when different pulse-per-revolution specifications are acceptable for the application. The Grayhill 25L series and compatible cross-manufacturer alternatives provide equivalent mechanical and electrical functionality across multiple resolution options.

Substiute Parts

25LR10-Q-Z

Grayhill Inc.In Stock: 97125LR10-Q-Z Datasheet

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25LB10-Q

Grayhill Inc.In Stock: 179925LB10-Q Datasheet

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25LB11-Q

Grayhill Inc.In Stock: 106725LB11-Q Datasheet

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25LB15-Q

Grayhill Inc.In Stock: 163925LB15-Q Datasheet

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25LB15-Q-Z

Grayhill Inc.In Stock: 76225LB15-Q-Z Datasheet

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25LB18-Q

Grayhill Inc.In Stock: 104925LB18-Q Datasheet

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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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ECW1D-C24-BC0024L

Bourns Inc.In Stock: 1167ECW1D-C24-BC0024L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the 25LR10-Q-Z is based on strict parameter matching within the Grayhill 25L series and compatible cross-manufacturer alternatives. The primary substitution criterion is the ability to maintain identical mechanical interface, electrical output format, and mounting characteristics.

Key Parameters Determining Substitutability:

1. Encoder Type (Mechanical): All substitutes must be mechanical encoders with no electronic components or digital output conversion.

2. Output Type (Quadrature Incremental): All substitutes must provide two-phase quadrature output for incremental position tracking.

3. Actuator Type (1/4" Dia Flatted End): Physical shaft interface must be identical to ensure compatibility with existing mechanical couplings and mounting hardware.

4. Mounting Type (Panel, PCB Through Hole): All substitutes must support both panel-mount and PCB through-hole installation without modification.

5. Orientation (Vertical): All substitutes must be configured for vertical mounting orientation.

6. Termination Style (PC Pin): All substitutes must use PC pin termination for direct PCB connection.

7. Detent (Yes): All substitutes must include mechanical detent positioning.

Variable Parameter - Pulses per Revolution (PPR):

The 25LR10-Q-Z operates at 36 PPR. Substitutes are available at alternative resolutions: 8, 12, 16, 20, 24, 32, and 36 PPR. Selection of alternative PPR values depends on application requirements for rotational resolution. Lower PPR values (8, 12, 16, 20) provide coarser resolution; higher PPR values (32, 36) provide finer resolution.

Cross-Manufacturer Alternative:

The Bourns ECW1D-C24-BC0024L provides equivalent functionality at 24 PPR with extended rotational life (200K cycles minimum) and identical mechanical/electrical interface specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same PPR - 36):

The 25LB10-Q is the direct equivalent to the 25LR10-Q-Z. Both parts operate at 36 PPR with identical mechanical and electrical specifications. The 25LB10-Q is available in bulk packaging with higher inventory (1775 pcs) and carries ROHS3 Compliant certification. Selection of 25LB10-Q is appropriate when packaging format change is acceptable and higher stock availability is advantageous.

Alternative Resolution Options (Different PPR):

The 25LB11-Q (32 PPR), 25LB15-Q (24 PPR), 25LB18-Q (20 PPR), 25LB22-Q (16 PPR), 25LB30-Q (12 PPR), and 25LB45-Q (8 PPR) are substitutes when application requirements permit resolution changes. All maintain identical mechanical interface, mounting type, and electrical output format. Selection depends on rotational resolution requirements of the specific application.

Cross-Manufacturer Alternative:

The Bourns ECW1D-C24-BC0024L provides equivalent functionality at 24 PPR with extended rotational life specification (200K cycles minimum versus 100K cycles). This part is suitable when higher durability is required and 24 PPR resolution is acceptable. ROHS3 Compliant status and identical mechanical interface ensure direct substitution capability.

Regulatory Compliance:

All substitute parts maintain RoHS and REACH compliance equivalent to or exceeding the original 25LR10-Q-Z specification. All parts are rated MSL 1 (Unlimited) for moisture sensitivity, ensuring identical storage and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the 25LB10-Q directly replace the 25LR10-Q-Z without circuit modification?

A: Yes. The 25LB10-Q is a direct equivalent with identical PPR (36), output type (quadrature incremental), actuator type (1/4" dia flatted end), mounting type (panel and PCB through hole), and termination style (PC pin). No circuit modification is required. The only difference is packaging format (bulk versus original packaging) and RoHS certification level (ROHS3 versus RoHS Compliant).

Q: What is the difference between the various PPR options in the 25L series?

A: PPR (pulses per revolution) determines rotational resolution. The 25LR10-Q-Z operates at 36 PPR, providing 36 discrete position increments per full rotation. Lower PPR values (8, 12, 16, 20, 24, 32) provide coarser resolution with fewer position increments per rotation. Higher PPR values provide finer resolution. Selection depends on the application's rotational accuracy requirements. All PPR variants maintain identical mechanical interface and electrical output format.

Q: Is the Bourns ECW1D-C24-BC0024L compatible with the 25LR10-Q-Z circuit?

A: The ECW1D-C24-BC0024L is mechanically and electrically compatible with identical actuator type, mounting type, orientation, and quadrature output format. However, it operates at 24 PPR (versus 36 PPR) and has extended rotational life (200K cycles versus 100K cycles). Circuit compatibility depends on whether the application can accept 24 PPR resolution instead of 36 PPR. The quadrature output signal format is identical, so signal processing circuits require no modification.

Q: What is the significance of the "-Z" suffix in the part number?

A: The "-Z" suffix indicates a specific packaging or configuration variant. The 25LR10-Q-Z and 25LB15-Q-Z both carry this designation. Functionally, parts with and without the "-Z" suffix within the same base model number (25LR10 or 25LB15) are equivalent. The suffix does not affect electrical or mechanical performance.

Q: Are all substitute parts rated for the same rotational life?

A: Most Grayhill 25L series substitutes are rated for 100K cycles minimum rotational life, matching the 25LR10-Q-Z specification. The exception is the Bourns ECW1D-C24-BC0024L, which is rated for 200K cycles minimum. Higher rotational life rating indicates extended component durability under continuous operation.

Q: Can I use a lower PPR encoder as a substitute if my application only requires coarse resolution?

A: Yes, if application requirements permit lower rotational resolution. For example, the 25LB30-Q (12 PPR) or 25LB45-Q (8 PPR) can substitute the 25LR10-Q-Z when coarser resolution is acceptable. All mechanical and electrical interface specifications remain identical. Verify that the application's control firmware or signal processing circuit can operate with the reduced number of position increments per rotation.

Q: What is the inventory status of substitute parts?

A: The 25LB10-Q (direct 36 PPR equivalent) has the highest inventory at 1775 pcs. The 25LB22-Q (16 PPR) has 1987 pcs available. The 25LB15-Q-Z (24 PPR) has the lowest inventory at 707 pcs. Inventory levels should be verified at time of procurement, as stock quantities are subject to change.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original 25LR10-Q-Z is RoHS Compliant. All substitute parts carry ROHS3 Compliant certification, which represents an equivalent or higher level of regulatory compliance. All parts are REACH Unaffected and carry identical MSL 1 (Unlimited) moisture sensitivity rating.