What is the difference between the G4181 and G7873 power feeders?
The primary difference is the motor type:
G4181: Single-phase motor, 1 HP
G7873: 3-phase motor, 1 HP
Other differences include:
| Feature | G4181 | G7873 |
|---|---|---|
| Electrical | 240V, Single-Phase, 60 Hz | 240V, 3-Phase, 60 Hz |
| Motor Amps | 4.2 / 2.5 A | 3.4 / 2.5 A |
| Horizontal Travel | 17 in. | 18-1/8 in. |
| Vertical Travel | 9 in. | 9-7/8 in. |
| Plug | Included (6-15) | Not included (recommended 15-15) |
How many feed speeds does it have?
Both feeders have 4 feed speeds: 13, 26, 33, and 66 feet per minute (FPM).
How do I change the feed speed?
The feeders include a set of four change gears. To change speeds:
Remove the side cover of the unit.
Swap the gears to the configuration for your desired feed rate.
Can the feeder run in reverse?
Yes, both models include a forward/reverse switch.
What are the roller specifications?
Number of rollers: 3
Width: 2-1/4"
Diameter: 4-5/8"
Suspension travel: 3/4"
Maximum height above table: 7"
Center distance between rollers: 5"
Material: Synthetic rubber
How does the feeder adjust for positioning?
360° swing capability
Vertical travel: G4181 = 9", G7873 = 9-7/8"
Horizontal travel: G4181 = 17", G7873 = 18-1/8"
Rack-and-pinion horizontal adjustment
Universal positioning with handle locks
What is the minimum workpiece length?
Both feeders can safely feed workpieces with a minimum length of 7 inches.
Where should I mount the power feeder?
Mounting position depends on your job:
Keep the unit out of the way, but ensure the feeder head is still adjustable to suit your workpiece.
How difficult is it to mount the power feeder?
Relatively simple.
Most secure method: Drill bolt holes and use nuts and washers underneath.
Tapping directly into the table may not be strong enough depending on the table thickness.
Do I really need a power feeder?
Yes, especially for long moulding sections:
Manual feeding can cause hesitation, leaving divots in the workpiece.
A power feeder provides consistent feed pressure and speed, resulting in a smoother finish.
How do I use a power feeder for tall or thin mouldings?
The power head swivels flat, allowing the drive wheels to face the fence instead of the table.
This setup is ideal for tall or thin mouldings.
What kind of oil is used in the gearbox?
Use 90-weight gear oil.
Recommended: Grizzly Part #: T28042 (Armor Plate with Moly-D XHP Gear Oil) or a similar 90W gear oil from an auto parts or hardware store.
What is the construction made from?
Housing: Cast aluminum
Supports: Cast iron
Column: Steel
Finish: Enamel paint
What electrical setup is required?
G4181: 240V, Single-Phase, 60 Hz, 4.2A, minimum 15A circuit, 6-15 plug included
G7873: 240V, 3-Phase, 60 Hz, 3.4A, minimum 15A circuit, plug not included (recommended 15-15), recommended phase converter: G5841
How long does setup take?
Approximate assembly and setup time is 45 minutes.
Where is the serial number located?
On the ID label, found on the in-feed portion of the housing’s roller cover side.
What is the warranty?
Both models come with a 1-year warranty.