GENIE 110663.0003.S, SPRKT,43T,#35CH,3/8P
The Genie 110663.0003.S is an OEM replacement chain sprocket designed for Genie commercial door operators. Featuring 43-Tooth #35 Chain Sprocket - 3/8 in Pitch - Service Replacement, this part meets Genie factory specifications for reliable drivetrain performance. Manufactured from carbon steel, standard finish; no od zinc coating on this variant to withstand commercial duty cycling. Key dimensions: 43 teeth, #35 chain, 3/8 in pitch; bore and hub dimensions per service specification. Mounting method: Plain bore, no keyway; secured to operator shaft via set screws for field service installation.
Key Features
- 43-tooth ANSI #35 roller chain sprocket with 3/8 in pitch
- Service replacement designation for field installation on Genie commercial operators
- Plain bore configuration secured with set screws - no keyway
- Carbon steel construction for strength and durability in commercial door operator applications
- Direct replacement for worn or damaged drive sprockets on compatible GCL-series operators
- Matched to #35 chain drive systems used across multiple Genie commercial operator models
Compatibility Guide
- GCL-MH
- GCL-MJ
- GCL-T
- GCL-GT
- GCL-GH
- GCL-Fire
| Feature | Specification |
|---|
| Model | Genie 110663.0003.S |
| Item Type | Chain Sprocket |
| Materials | Carbon steel, standard finish; no OD Zinc coating on this variant |
| Dimensions | 43 teeth, #35 chain, 3/8 in pitch; bore and hub dimensions per service specification |
| Mounting | Plain bore, no keyway; secured to operator shaft via set screws for field service installation |
Frequently Asked Questions
Q: What does the .0003.S suffix mean on part number 110663.0003.S?
A: The .0003.S suffix designates a service replacement part. The 'S' indicates it is intended for field installation as a direct replacement on existing Genie commercial door operator shafts, supplied without a keyway for set-screw style mounting.
Q: What chain pitch is compatible with this sprocket?
A: This sprocket is designed for ANSI #35 roller chain, which has a 3/8 in pitch. Using a different chain pitch such as #25 (1/4 in pitch) or #41 (1/2 in pitch) would result in improper meshing and must be avoided.
Q: How does this sprocket differ from part number 110663.0013?
A: Part number 110663.0013 is the alternate 43-tooth #35 sprocket variant that includes an OD Zinc finish for enhanced corrosion resistance on the tooth profile. The 110663.0003.S is the standard service replacement without that finish upgrade.
Q: Which Genie commercial operator models is this sprocket compatible with?
A: This sprocket is compatible with Genie commercial door operator models including the GCL-MH, GCL-MJ, GCL-T, GCL-GT, GCL-GH, and GCL-Fire series that utilize #35 roller chain drive systems. Always verify the shaft diameter and operator model before ordering.
Q: How is this sprocket secured to the operator shaft during installation?
A: Because this is a plain-bore service sprocket without a keyway, it is secured to the operator shaft using set screws. Ensure set screws are torqued to the appropriate specification and that the shaft diameter matches the bore of this sprocket to prevent slippage.
