LiftMaster K15-41B32GXX Sprocket, 41B32T, 3/4 Inch Bore
The LiftMaster K15-41B32GXX is a 41B32T sprocket with a 3/4 inch bore for select commercial door operator drive systems. It is used where the operator parts diagram calls for a 41B32 tooth sprocket on a 3/4 inch shaft. In many commercial operators, this sprocket works as part of the output shaft or chain drive arrangement. Worn sprocket teeth can cause chain jump, rough operation, clicking, and faster chain wear, so the surrounding chain path should be inspected when this part is replaced.
What This Part Does
The sprocket engages the #41 chain and transfers drive force through the operator. The 32-tooth count and 3/4 inch bore are part of the fitment, alignment, and chain-speed relationship designed into the operator.
Compatible With
Use this sprocket on select LiftMaster commercial door operator applications that specify K15-41B32GXX, 15-41B32GXX, or 1541B32GXX.
- Select LiftMaster commercial door operator drive assemblies requiring 41B32T x 3/4 inch bore sprocket
- Select LiftMaster commercial access solution applications where the parts diagram lists K15-41B32GXX
- Certain commercial trolley operator output shaft kit arrangements where this sprocket is shown
- Applications referencing 15-41B32GXX or 1541B32GXX
Compatibility and Application Notes
- This is a 41B32T sprocket with a 3/4 inch bore.
- Do not confuse this with K15-40B19LGH, which is a 40B19T sprocket with 1 inch bore.
- Confirm whether the sprocket is being replaced as an individual part or as part of a larger output shaft kit.
Features and Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Drive sprocket |
| Part Number | K15-41B32GXX |
| Sprocket Size | 41B32T |
| Bore | 3/4 inch |
| Application | Commercial operator chain drive assembly |
| Compatible Operator Type | Select LiftMaster commercial door operators |
| Chain Series | #41 chain applications where specified |
| Notes | Match tooth count, bore, and diagram position |
Also Known As / Related Part Numbers
- K15-41B32GXX
- 15-41B32GXX
- 1541B32GXX
- 41B32T 3/4 inch bore sprocket
Technician Note
If the old sprocket teeth are sharp, hooked, or uneven, the chain is usually worn too. Check chain alignment and shaft bearing play before installing the replacement sprocket.
Before Ordering
- Confirm 41B32T tooth count and chain series.
- Confirm 3/4 inch bore.
- Confirm the parts diagram lists K15-41B32GXX or a related number.
- Inspect chain wear and mating sprockets.
- Verify chain alignment after installation.
Professional Advisory
Chain and sprocket service on commercial operators should be done with power disconnected and the door secured to prevent unexpected movement.
Product Questions and Answers
What chain size is this sprocket for?
This is a 41B series sprocket used in #41 chain applications where the operator diagram specifies it.
What is the bore size?
The bore size is 3/4 inch.
Is K15-41B32GXX the same as 15-41B32GXX?
Yes, 15-41B32GXX and 1541B32GXX are commonly listed as related references for this sprocket.
No. K15-40B19LGH is a different 40B19T sprocket with a 1 inch bore.
Should I replace the chain too?
Replace or service the chain if it is stretched, rusty, noisy, tight in spots, or has damaged links.
