JET JJ-6HHDX 6" Helical Head Jointer 1hp, 1PH, 115/230V - JT9-708466DXK

JET JJ-6HHDX 6" Helical Head Jointer 1hp, 1PH, 115/230V - JT9-708466DXK

The JET JJ-6CSDX (#708457DXK) & JJ-6HHDX (#708466DXK) 6" Jointers are identical in design and construction with the major exception being the cutterheads. The comes with a three-knife cutterhead, while the JJ-6HHDX is equipped with a helical cutterhead with 27 carbide inserts.

The JJ-6HHDX comes with an all steel enclosed base cabinet. An integral tab at each end of the cabinet bottom makes securing the jointer to the floor easy when a suitable surface is available. This cabinet provides a stable platform and puts the table surface at a comfortable 31-1/4" above the floor.

The base cabinet also houses the 1hp, 1 phase 115/230V TEFC (totally enclosed fan cooled) motors (pre-wired 115V) and wiring to help isolate those components from the dust-prone jointer environment. A large door on the rear of the base cabinet provides easy access to the motor should that be needed in the future. The 1hp motor spins the JET JJ-6HHDX cutterhead at a very consistent 6,000 RPM for a good balance between speedy material removal and a silky-smooth surface on the wood.

Also in the base cabinet is the dust chute that runs from under the cutterhead down to the cabinet side. A 4" diameter port makes attaching your dust collector easy and adapter free. The angle of the dust chute makes it very efficient at evacuating the debris from beneath the cutterhead. The JET JJ-6HHDX has a paddle-style switch mounted on a stalk that places it behind and above the fence.

The JET JJ-6HHDX Jointer features a long, cast iron table with a smooth, flat precision-machined finish that keeps the wood sliding predictably while ensuring accuracy. At 55-3/4" x 7-3/8" this table makes straightening large project pieces accurate and reliable. The overall cut capacity of 6-1/16" wide by 1/2" deep provides plenty of capacity for the most active of home wood shops. The outfeed table even has built-in 1/2" rabbeting ledges that add a little more versatility to the JJ-6HHDX.

Both the infeed and outfeed tables feature exclusive front-mounted handwheels that make table height changes easy and accurate. The infeed table has a full 1/2" range of motion and features an easy-to-read scale that makes setting the exact cut depth you want simple. An automatic limiter on the JJ-6HHDX prevents accidentally taking overly aggressive cuts more than 1/8" deep. The depth limiter can be manually overridden easily, but it requires the operator to intentionally release it.

The JET JJ-6HHDX jointer comes equipped with our true helical cutterhead. This high precision cutterhead has 27, 4- sided carbide inserts mounted on individual seats. This system requires no adjustment of the cutters. Each insert has precisely machined angles in its top and all four cutting edges. When combined with the equally precise mounting pads on the cutterhead these angles produce an ultra smooth slicing action that creates a highly refined surface on the wood.

The inserts are made of high-quality carbide that holds an edge for a very long time. Combined with the true, low impact slicing action, the cutters stay sharp for a very long time. Should an edge eventually go dull, you simply index the cutters to another of the four identical cutting edges and go back to work.

Another nice feature of the helical cutterhead is that should a hidden piece of metal get onto the JJ-6HHDX, only the inserts directly in line with the metal will need attention. Those few cutters can be indexed or replaced, whichever is necessary, minimizing cost and downtime. We even include five extra carbide inserts, mounting screws and a pair of wrenches to handle the replacement!

This jointer comes with a versatile 32-5/8" long by 3-7/8" tall cast iron fence system that tilts to 45-degrees in and out to handle all of your bevel needs. Changing fence bevel angle or position on the table is tool free. All fence controls are located near the center to keep them in easy reach of the operator.

Fully adjustable stops are provided at 90° and both 45° settings. The 90° stop features a flip-out bar that provides instant access to the 45° bevel capability away from the operator. It also makes returning to the 90° setting just as quick. The fence has a composite insert on the bottom edge that lets it slide smoothly across the table surface for easy adjustments. This insert also prevents the fence from scratching the table surface.

JET warrants every product they sell against manufacturer's defects. All JET Woodworking Machinery carry a 5-Year Warranty from date of purchase. Woodworking products with a 5-Year Warranty that are used for commercial or industrial purposes default to a 2-Year Warranty. Warranties are subject to JET's terms and conditions.

Features

• Built-in dust chute with 4" port connects to your collection system for efficient dust/chip disposal
• Center fence controls are conveniently mounted to allow quick adjustments
• Exclusive front-mounted table adjustment handwheels make quick, easy, and accurate corrections
• Extra-long heavy-duty cast iron infeed and outfeed tables with precision machined finish
• Heavy-duty cast iron infeed and outfeed tables with precision machined finish
• Heavy-duty, one-piece steel closed stand includes mounting tabs for increased stability
• Helical cutterhead with indexable carbide inserts for a superior finish and quieter cut
• Industrial push-button controls are conveniently placed for easy access
• Powerful 1HP motor easily handles the toughest jointing tasks
• Two-way tilting fence with positive stops at 45° and 90° to handle bevel operations

Specifications

What our Experts Think

• Precision Helical Cutterhead: 6" helical head with multi-knife design ensures ultra-smooth cuts, reducing tear-out and producing cleaner edges.

• Powerful Motor: 1 HP, single-phase motor (115/230V) delivers consistent performance for hardwoods and softwoods alike.

• Durable Build: Heavy-duty cast iron tables and fence provide stability and reduce vibration for accurate jointing.

• User-Friendly Design: Easily adjustable fence and table setup allows precise depth and angle control for versatile woodworking tasks.

• Quiet & Efficient: Helical cutterhead operates more quietly than traditional straight knives while requiring less maintenance.

• Expert Verdict: A top-tier jointer combining precision, power, and durability — perfect for professional woodworkers seeking clean, reliable results.

Q&A

Q1: What type of machine is this?
A: The JET JJ-6HHDX is a 6-inch helical head jointer designed for smooth, precise edge and face jointing of wood.

Q2: What is the motor specification?
A: Equipped with a 1 HP motor, single-phase (1PH), capable of running on 115V or 230V for versatile workshop use.

Q3: What are the key features?
A: Features a helical cutterhead with replaceable carbide inserts, adjustable fence, infeed/outfeed tables, and heavy-duty construction for accuracy and durability.

Q4: What materials can it handle?
A: Suitable for hardwoods, softwoods, and engineered wood products, providing smooth, splinter-free cuts.

Q5: Is it suitable for professional use?
A: Yes, ideal for professional workshops and woodworking enthusiasts requiring high-quality jointing performance.

Q6: Does it include safety features?
A: Yes, includes cutterhead guard, push blocks, and stable base for secure operation.

Q7: What is the cutting capacity?
A: Supports 6-inch width jointing with adjustable depth of cut for precise woodworking tasks.

Q8: What comes included with the jointer?
A: Includes the jointer with helical cutterhead installed, fence assembly, and standard accessories ready for

Maintenance Tips

• Clean After Use: Remove wood chips and dust from the table, cutter head, and infeed/outfeed areas to maintain smooth operation.

• Inspect Cutters: Check the helical head blades regularly; rotate or replace as needed to maintain sharp, precise cuts.

• Lubricate Moving Parts: Lightly oil adjustment screws, fence pivots, and other moving components to prevent wear.

• Check Alignment: Periodically verify table flatness and fence alignment for accurate jointing.

• Electrical Safety: Ensure the 115/230V power supply is stable and cords are in good condition before use.

• Store Properly: Keep the jointer in a dry, dust-free environment to prolong motor and component life