Genie 111916.2040.S Models J / H / GH Sprocket Assembly, #50-40T, 1-1/4" (Optional)
The Genie 111916.2040.S is a factory replacement #50 roller chain sprocket assembly for Genie commercial gate and door operators Models J (Jackshaft), H (H-Rail trolley), and GH (Gear Head Hoist). This variant features 2040 teeth with a 1-1/4 inch bore diameter, designed to mate with #50 roller chain (5/8 inch pitch). The 1-1/4 inch bore accommodates the specific shaft diameter found on qualifying J, H, and GH operator drive assemblies. Selection of the correct tooth count allows the installer to configure the appropriate drive ratio for the gate weight, travel distance, and desired cycle speed of the application. Genie offers this same 1-1/4 inch bore sprocket family in five tooth counts (31T, 36T, 40T, 48T, and 60T) to cover the full range of commercial gate operator drive requirements.
Key Features
- #50 roller chain compatibility with 5/8 inch pitch for reliable high-load power transmission
- 40-tooth count engineered for optimized torque and speed ratio in commercial gate operator drive systems
- 1-1/4 inch bore sized for direct installation on compatible Genie operator drive shafts
- Part of a multi-tooth-count family (31T, 36T, 40T, 48T, 60T) allowing drive ratio customization
- Designed specifically for Genie Model J, H, and GH commercial operator platforms
- Sprocket assembly format provides a ready-to-install solution reducing field assembly time
Compatibility Guide
- Genie Model J Jackshaft Operator
- Genie Model H H-Rail Trolley Operator
- Genie Model GH Gear Head Hoist Operator
Professional Specs
| Feature | Specification |
|---|
| Model | Genie 111916.2040.S |
| Item Type | Sprocket Assembly |
| Materials | Steel (sprocket and hub assembly, typical for #50 industrial roller chain sprocket applications) |
| Dimensions | 1-1/4 inch bore, 40 teeth, #50 roller chain pitch (5/8 inch pitch) |
| Mounting | Keyed or set-screw bore mount, 1-1/4 inch shaft bore |
| Alternate Part Numbers | 111916.2040.S |
Frequently Asked Questions
Q: What roller chain pitch is compatible with this sprocket?
A: This sprocket is designed for #50 roller chain, which has a 5/8 inch pitch. Using any other chain pitch will result in improper engagement, accelerated wear, and potential drive failure.
Q: Which Genie operator models is this sprocket assembly compatible with?
A: This assembly is specifically listed for Genie Model J (Jackshaft), Model H (H-Rail Trolley), and Model GH (Gear Head Hoist) commercial gate operators. Verify your operator model and existing drive ratio requirements before ordering.
Q: What other tooth count options are available in the 1-1/4 inch bore family?
A: Within the same 1-1/4 inch bore family, options include 31T, 36T, 40T, 48T, and 60T. The 40T variant (this part) provides a specific gear reduction ratio suited to mid-range torque and speed requirements for your gate operator drive system.
Q: How does the 40-tooth count affect drive ratio and gate operator performance?
A: The tooth count directly affects the drive ratio between the motor sprocket and the driven sprocket. A 40-tooth driven sprocket paired with a smaller drive sprocket increases torque output and reduces output speed, which is critical for matching the operator to the gate load and travel speed requirements.
Q: Are there any superseded or legacy part numbers I should be aware of when ordering this sprocket?
A: No legacy or superseded part numbers have been identified for this assembly. Order directly using part number 111916.2040.S to ensure you receive the correct 40T, 1-1/4 inch bore variant.
