Grayhill 25LB22-Q-Z Rotary Encoder Mechanical 16PPR Equivalent & Substitute Parts

Part Overview

The Grayhill 25LB22-Q-Z is an active mechanical rotary encoder with 16 pulses per revolution (PPR) in quadrature (incremental) output configuration. 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 ROHS3 compliant and maintains an active product status with 678 units in current inventory. Substitute parts are identified based on matching mechanical, electrical, and compliance parameters within the Grayhill 25L series.

Key Parameters

Parameter	Value
Manufacturer	Grayhill Inc.
Series	25L
Encoder Type	Mechanical
Output Type	Quadrature (Incremental)
Pulses per Revolution (PPR)	16
Actuator Type	1/4" Dia Flatted End
Detent	Yes
Built-in Switch	No
Mounting Type	Panel, PCB Through Hole
Orientation	Vertical
Termination Style	PC Pin
Rotational Life (Cycles Min)	100K
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 25LB22-Q-Z are identified from the Grayhill 25L series based on strict parameter matching across mechanical, electrical, and compliance specifications. The substitution logic is based on the following key parameters that determine functional equivalence:

Matching Parameters (Required for Substitution):

Manufacturer: Grayhill Inc.
Series: 25L
Encoder Type: Mechanical
Output Type: Quadrature (Incremental)
Actuator Type: 1/4" Dia Flatted End
Detent: Yes
Built-in Switch: No
Mounting Type: Panel, PCB Through Hole
Orientation: Vertical
Termination Style: PC Pin
Rotational Life: 100K cycles minimum
RoHS Status: ROHS3 Compliant
MSL: 1 (Unlimited)
REACH Status: REACH Unaffected

Variable Parameter (Differentiates Substitutes):

Pulses per Revolution (PPR): 16, 12, or 8

Substitute parts differ only in PPR specification, which determines the resolution of rotational measurement. All other mechanical, electrical, and compliance characteristics remain identical across the substitute group.

Parameter Comparison

Parameter	25LB22-Q-Z (Main)	25LB22-Q	25LB30-Q	25LB45-Q
Manufacturer	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.
Series	25L	25L	25L	25L
Encoder Type	Mechanical	Mechanical	Mechanical	Mechanical
Output Type	Quadrature (Incremental)	Quadrature (Incremental)	Quadrature (Incremental)	Quadrature (Incremental)
Pulses per Revolution	16	16	12	8
Actuator Type	1/4" Dia Flatted End	1/4" Dia Flatted End	1/4" Dia Flatted End	1/4" Dia Flatted End
Detent	Yes	Yes	Yes	Yes
Built-in Switch	No	No	No	No
Mounting Type	Panel, PCB Through Hole	Panel, PCB Through Hole	Panel, PCB Through Hole	Panel, PCB Through Hole
Orientation	Vertical	Vertical	Vertical	Vertical
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin
Rotational Life (Cycles Min)	100K	100K	100K	100K
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active
Current Inventory	678 Pcs	1987 Pcs	1060 Pcs	1024 Pcs

Engineering Selection Recommendations

All substitute parts maintain active product status with Grayhill Inc. and carry identical ROHS3 compliance and REACH unaffected certifications. Selection between the 25LB22-Q-Z, 25LB22-Q, 25LB30-Q, and 25LB45-Q is determined by application-specific PPR requirements:

25LB22-Q-Z and 25LB22-Q (16 PPR): Select for applications requiring 16 pulses per revolution resolution. The 25LB22-Q offers higher current inventory (1987 units) compared to the 25LB22-Q-Z (678 units).

25LB30-Q (12 PPR): Select for applications requiring 12 pulses per revolution resolution with 1060 units in inventory.

25LB45-Q (8 PPR): Select for applications requiring 8 pulses per revolution resolution with 1024 units in inventory.

All parts share identical mechanical mounting, electrical output characteristics, and compliance certifications. PPR selection is application-dependent and does not affect mechanical or electrical compatibility within the 25L series framework.

Frequently Asked Questions (FAQ)

Q: Can 25LB22-Q-Z be directly replaced with 25LB22-Q?

A: Yes. Both parts are identical in all parameters except packaging designation. The 25LB22-Q offers higher inventory availability (1987 units versus 678 units).

Q: What is the difference between 25LB22-Q-Z and 25LB30-Q?

A: The primary difference is pulses per revolution: 25LB22-Q-Z provides 16 PPR while 25LB30-Q provides 12 PPR. All other mechanical, electrical, and compliance parameters are identical. Selection depends on application resolution requirements.

Q: Can 25LB45-Q substitute for 25LB22-Q-Z in all applications?

A: 25LB45-Q is mechanically and electrically compatible with 25LB22-Q-Z in terms of mounting, termination, and compliance. However, 25LB45-Q provides 8 PPR versus 16 PPR. Substitution is valid only if the application can function with lower rotational resolution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts in this substitute group (25LB22-Q-Z, 25LB22-Q, 25LB30-Q, 25LB45-Q) are ROHS3 compliant and REACH unaffected.

Q: What is the minimum rotational life specification for these encoders?

A: All parts in this group specify a minimum rotational life of 100,000 cycles.

Q: Do these encoders include a built-in switch?

A: No. All parts in this substitute group do not include a built-in switch function.

Q: What mounting options are available?

A: All parts support both panel and PCB through-hole mounting with vertical orientation and PC pin termination.

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