Viking Access Systems T21GB80K Worm Gear Assembly
The Viking Access Systems T21GB80K is a worm gear drive assembly built exclusively for the Viking Access T21NX next-generation swing gate operator. It is not compatible with the original-generation T21, which requires the T21GB80.
Replacement Worm Gearbox for the Viking Access T21NX
The Viking Access Systems T21GB80K is a worm gear drive assembly dedicated to the Viking Access T21NX next-generation swing gate operator. The gearbox transfers motor torque into controlled output at the operator's drive shaft, governing gate travel speed and holding force during normal cycling. Common indicators of gearbox wear include drivetrain grinding, increased backlash, inconsistent gate movement, and loss of holding torque at the closed position. Replacing the worn unit with the correct OEM gearbox restores controlled motion and removes uneven loading from the rest of the operator drivetrain.
Key Features
- Worm gear drive assembly for the Viking Access T21NX next-generation swing gate operator
- 30:1 gear ratio with #80 worm gear for controlled torque output and gate travel
- Restores correct motor-to-output torque transfer when the original gearbox has worn or failed
- Addresses drivetrain symptoms including grinding, backlash, and inconsistent gate movement
- The K suffix in the part number identifies next-generation T21NX compatibility
Specifications
- Part Number: T21GB80K
- Component Type: Worm gearbox assembly
- Drive Type: Worm gear
- Worm Gear Size: #80
- Gear Ratio: 30:1
- Mounting Type: Bolt-On
Compatibility
- Compatible with: Viking Access T21NX next-generation swing gate operator
- Not compatible with: Original-generation Viking Access T21 operator, that platform requires the T21GB80 (without the K suffix)
Both operator generations remain in active service and may appear similar externally, always verify the operator model and generation on the unit nameplate or original purchase documentation before ordering.