Important Disclaimer
This article references a model that is no longer in production. Please note that the availability of replacement parts or discussed accessories is not guaranteed.
1. What is the maximum depth and width of cut?
The G5851 Planer can cut up to 1⅛" deep and 24" wide, making it ideal for handling large boards efficiently.
2. What is the maximum cutting height and minimum stock dimensions?
- Maximum cutting height: 8¼"
- Minimum stock thickness: 1¼"
- Minimum stock length: 7½"
3. What type of cutterhead and knives does the planer use?
The G5851 features a 3" diameter cutterhead with three high-speed steel knives measuring 24" x 13⁄16" x 1⁄8". The cutterhead operates at 5,200 RPM, producing 15,600 cuts per minute for smooth, precise cuts.
4. What is the feed rate and cuts per inch?
The planer operates at a feed rate of 24 FPM, achieving approximately 54 cuts per inch for a consistent surface finish.
5. What materials are used in the construction?
- Table: Precision-ground cast iron
- Infeed roller: Segmented steel
- Outfeed roller: Fine-finished steel
- Cutterhead: One-piece machine shaft with 3 knife slots and shielded ball bearings with grease fittings
These materials ensure durability, stability, and long-term accuracy.
6. What type of motor does the G5851 Planer have?
The planer is powered by a 5 HP TEFC capacitor-start induction motor. It runs on single-phase 220V power, draws 25 amps, and operates at 3,450 RPM. The motor includes a magnetic switch with thermal overload protection for safety.
7. How is power transferred from the motor to the cutterhead?
The G5851 uses a twin V-belt drive system with shielded and lubricated ball bearings, ensuring smooth and efficient operation.
8. What special features does the G5851 Planer include?
- Lever-controlled bed rollers for consistent feeding
- Handwheel depth adjustment for precise cutting
- Segmented chip breaker to minimize tear-out
- Table locks for stability
- 5" dust port for effective dust collection
- Inch and metric measurement scales
- Board return rollers for handling long stock
- Dust covers protecting vertical support columns and leadscrews
- Grease fittings on cutterhead for easy maintenance
9. Can the G5851 Planer handle heavy-duty workshop use?
Yes. Its robust motor, precision-ground table, high-speed cutterhead, and durable construction make it suitable for professional and heavy-duty woodworking projects.
10. How easy is maintenance on this planer?
Maintenance is straightforward. The cutterhead has grease fittings, and all bearings are shielded and lubricated. Regular inspection of feed rollers, knives, and the dust collection system will keep the machine running at peak performance.
11. Can I run molding knives in my G5851 Planer?
No. There is not enough clearance around the cutterhead, and the infeed roller does not have sufficient adjustment.
12. What type of feed rollers does it have?
- Infeed roller: Segmented steel
- Outfeed roller: Solid, smooth steel
13. What size breaker do I need to operate this planer?
A 30-amp circuit breaker is required.
14. How can I connect the 5" dust port to a 4" hose?
- Use a 5" to 4" stovepipe reducer (available at most hardware stores)
- Then connect your 4" hose to the dust collector
15. What are the CFM requirements for a dust collector?
For runs 10 feet or less, a dust collector with 450 CFM may work. However, bigger is always better for performance.
16. How are the planer knives adjusted?
Knives are adjusted using jackscrews, but adjustment springs are also included for those who prefer that method.
17. How many knives are in the cutterhead?
The cutterhead contains three knives.
18. How fast does this planer feed lumber?
The feed rate is 24 feet per minute.