Home > Appliances > Ranges, Hoods and Vents >

Harman 3-20-60906 4 RPM Auger Feed Motor for Pellet Stoves, 120V AC -- NBK 20129N
Harman 3-20-60906 NBK 20129N 4 RPM auger feed motor for pellet stoves, 120V AC, clockwise rotation, 3/8-inch shaft
Harman 4 RPM Auger Feed Motor For Pellet Stoves, 120V
  
List Price: $61.49
: $43.99
You save $17.50!
Part Number: 32060906
Manufacturer: Harman

Quantity in Stock :37

Availability: In Stock
Qty:

 
Harman 4 RPM / 120V AC OEM Replacement Part Harman 3-20-60906 Auger Feed Motor -- 4 RPM, 120V, Clockwise

The Harman 3-20-60906 is an OEM-spec auger feed motor that keeps pellet fuel moving from the hopper to the burn pot at a controlled, consistent rate. Running at exactly 4 RPM on 120V AC with clockwise rotation, it is a direct replacement for worn or failed auger motors in a wide range of Harman and Legacy pellet stove models. Also catalogued as NBK Parts 20129N.

Keep the Feed System Running Right

The auger motor is the mechanical heart of any pellet stove feed system. When it slows, stalls, or fails, fuel delivery stops and your stove goes out -- often at the worst possible time. This Harman 3-20-60906 motor is built to OEM specifications and is a proven direct replacement for the factory unit on the compatible models listed below.

With a 3/8" diameter shaft, two female wire leads, and clockwise rotation matched to Harman's auger assembly, installation is straightforward for anyone comfortable with basic appliance wiring. No adapters or shaft modifications are needed on compatible stoves.

Precise 4 RPM Output

Delivers the exact feed rate Harman's burn system is calibrated for -- critical for clean combustion and efficient pellet use.

120V AC / 60Hz Operation

Plugs directly into the stove's internal wiring harness. No voltage conversion or special circuitry required on compatible models.

Clockwise Rotation

Rotation direction is fixed and matches Harman's auger thread orientation. Confirm CW rotation before ordering if you are unsure of your current motor.

3/8" Keyed Shaft

Standard 3/8" diameter x 1-1/8" length output shaft mates directly to the Harman auger coupler without modification.

Wide Harman and Legacy Model Coverage

This motor fits a broad span of Harman pellet stoves produced across multiple generations. See the compatibility table at right for the full list. Key serial number breakpoints apply to the P38, P61, P61-C, P61A, and P68 -- confirm your unit's serial before ordering.

Also Known As: This part is catalogued and sold by NBK Parts under part number 20129N. If you sourced your original motor from an NBK supplier, this is the same component.

Diagnosing a Failed Auger Motor

Common symptoms of a failing or dead auger motor on Harman pellet stoves include:

  • Stove lights but goes out shortly after -- fuel stops feeding mid-cycle
  • Auger shaft does not turn when stove is calling for heat
  • Motor hums but shaft does not rotate (seized gear train)
  • Erratic flame height or frequent low-fire shutdowns
  • Burning smell near the auger motor housing
Before replacing: Confirm 120V AC is present at the motor leads during a heat call. If voltage is present and the motor does not run, the motor itself is the likely fault. If no voltage is present, check the control board and wiring harness first.

Installation Notes

  • Disconnect power to the stove before removing the old motor.
  • Note the routing of the two wire leads before disconnecting -- a photo helps.
  • The motor mounts to the auger housing bracket with machine screws (hardware is typically reused from the old motor).
  • Slide the new motor shaft into the auger coupler and confirm no binding before restoring power.
  • After reassembly, run the stove through one full heat cycle and verify normal pellet feed before leaving unattended.
Maintenance Tip: While the auger housing is open, inspect the auger flighting for wear or corrosion and clear any pellet dust or fines from the feed tube. A clean auger path reduces motor load and extends service life.

Motor Specifications

Harman Part Number3-20-60906
NBK / Vendor Part Number20129N
Voltage120V AC, 60 Hz
Current Draw0.72 A
Output Speed4 RPM
Rotation DirectionClockwise
Output Shaft Diameter3/8"
Output Shaft Length1-1/8"
Electrical Connection2 female wire leads
Weight4 lbs

Compatible Harman Models

Accentra 52iAll units
Accentra 52i TCAll units
Accentra InsertAll units
DVC 500All units
Invincible InsertAll units
Invincible RSAll units
Invincible TAll units
P35iAll units
P35i-CAll units
P38Serial post 008080066
P38+All units
P43All units
P43-CAll units
P61Serial post 008085055
P61-CSerial post 008085803
P61ASerial post 008085803
P68Serial pre 008280309
PC45All units
Pellet Pro IIAll units
PF100All units
PF120All units
Super Magnum StokerAll units

Compatible Legacy Models

Super Magnum StokerAll units

What Is Included

Auger Feed Motor1x Harman 3-20-60906 motor assembly
Mounting HardwareNot included -- reuse hardware from original motor
Wire Connectors2 female leads integral to motor
Important Information
  • This motor operates on 120V AC. Always disconnect power to the stove before removing or installing the motor.
  • Serial number breakpoints apply to the P38, P61, P61-C, P61A, and P68 models. Verify your stove's serial number against the compatibility table before ordering to ensure correct fitment.
  • Rotation direction is clockwise only. Installing an incorrect-rotation motor will damage the auger system.
  • Mounting hardware is NOT included. Reuse the screws from your original motor or source M4 or #8 machine screws of the appropriate length for your bracket.
  • This is a gearmotor -- do not attempt to manually force or spin the output shaft, as this can strip the internal gear train.
  • Confirm 120V AC supply voltage at the motor harness before concluding the motor has failed. A faulty control board can mimic motor failure symptoms.


Browse for more RV Accessories in the same category as this item:

Appliances > Ranges, Hoods and Vents
Appliances