Inverted Routers

In 1915 Oscar Onsrud and his son Rudy took woodworking to a new level when they built the world's first "Jet Motor" (air turbine) hand router. Since that day, the Onsrud family has become synonymous with routing. Virtually every aircraft built for the U.S. war effort in WWII had parts made on Onsrud routers. Most of those machines are still in use today! Almost every M-1 rifle stock built in the Springfield Armory was made on an Onsrud machine. It is difficult to walk through any major furniture plant worldwide without finding an Onsrud machine in service.

The legendary Onsrud control makes every one of our routers easy to operate. It's a control that's built with the operator and programmer in mind, and is packed with intuitive features you won't find on any other CNC machining center.

Interested in a machine on this page? Call 503-581-1516 to get a quote, or look at the bottom of this page for leasing options!

Model 900VSX
Quality from top to bottom and famous Onsrud Inverted Router design

Onsrud Inverted Routers® have set a new standard for versatility, performance and ease of operation. The finest quality work can now be accomplished in less time--without the headaches normally associated with conventional overhead routers.

The model 900VSX is Onsrud's finest machine, ruggedly built to the highest quality specifications. Only the very best components are incorporated in this tough, dependable machine, assuring you many years of precision performance.

Onsrud Inverted Router design means:

• Cutter enters workpiece from underneath.
• Pattern and guide pin are on top for easy reference--in full view of the operator.
• Greater stability on the workpiece and cutter, resulting in smoother cuts and easier work.
• Depth register is more accurate using the fixed position of the table as the reference point.
• Workpiece cannot be "pulled" into a spiral bit (the way it can sometimes be pulled into an overhead bit).
• Under-the-table vacuum sawdust and chip removal system works with gravity to keep sawdust and chips out of the way--even on deep cuts--eliminating the major cause of bit chatter and burns. It also increases feed rate and tool life.

The Onsrud Model 900VSX gives you:

• Oversized pulleys for better power transmission.
• Precision spindle machined and ground from special alloy steel for accuracy, rigidity and long life.
• Quick change pulleys for the ultimate in precision and convenience. Your operators can machine their pieces at exactly the right rpm for any application!
• A replaceable 3/4" chuck assembly that allows replacement of a damaged chuck without replacing the whole spindle shaft.
• Automatic shutdown when there is insufficient air pressure to operate spindle lubrication/cooling system.
• Interlocks that require prelubrication of the spindle bearings and appropriate drive belt tensioner setting before the spindle may be started.
• Magnetic starter with adjustable "circuit breaker" type overload protection and switched automatic or manual reset.
• Aircraft grade ABEC 7 Precision
• "BARDEN" brand spindle bearings rated for 30,000 rpm.
• A totally enclosed, fan cooled, three phase heavy duty 10 horsepower motor for a maximum spindle speed of 25,000 rpm, variable with quick change pulleys or optional "high cycle" solid state drive.
• Spindle travel of 0-3" by pneumatic valve.
• Fog mist lubricated, compressed air cooled extra heavy duty cutting spindle.
• Automatic brake.
• A three position depth stop, infinitely adjustable and conveniently located for quick, easy and accurate setups.
• Standard accessories including a full complement of set-up wrenches, instruction manual, lubrication gun, 1/4", 5/16", 3/8", 1/2" guide pins and 1/4", 3/8" and 1/2" collet.
• Unlimited sizes of simple and inexpensive guide pins available as optional accessories.
• Full one year limited warranty.
• A 31" x 43" x 1 1/2" acrylic-topped table that absorbs cutting vibrations without marring the workpiece.
• Direct factory "Hot Line" for technical support.

Ordering information and optional equipment:

• Model 900VSX (with pneumatic foot pedal to actuate the cutter spindle)

In addition, the following optional equipment is available:

• Lower depth stop
• Intri-shaper option
• Infinitely variable speed control
• Vacuum template system
• Table fence

Standard specifications and requirements:

• Throat depth: 36" (914 mm)
• Table size: 43" x 31" (1100 mm x 780 mm)*
• Maximum workpiece/template height: 4" (100 mm)*
• Dust collection: 500 CFM (2000 m³/h), 4" (100 mm) outlet
• Compressed air: 80 psi (6 bar), 4 CFM (150 liters/minute)
• Motor: 10 horsepower, 3 phase
• Shipping weight: 1900 lbs. (862 kg.)
  *Machines can be ordered with greater capacity if needed.

With an Onsrud 900VSX Inverted Router® you can craft intricate patterns in a single pass. A workpiece can be processed at a variety of depths with the tightly secured template always in view for maximum accuracy. The ultimate machine from Onsrud allows you to produce the finest quality work while dramatically increasing the volume your cutting room can handle.

Price - $16,880.00 FOB Factory

Requirements

• Dust collection: 500 CFM
• Compressed air: 80 psi, 4.5 CFM
• Shipping weight: 1100 lbs

Price - $8680.00 FOB Factory

Model 750SS
Economy, performance and famous Onsrud Inverted Router design

Onsrud Inverted Routers have dominated other price categories in terms of design and performance. But until now, there wasn't an Onsrud Inverted Router available in the mid-price range.

The Onsrud model 750SS bridges the gap between smaller and larger pin routers--and proves that Onsrud can give you more for your money in any price category.

Onsrud Inverted router design means:

• Cutter enters wood from underneath.
• Pattern and guide pin are on top for easy reference--in full view of the operator.
• Greater stability of the workpiece and cutter results in smoother cuts and makes work easier.
• Depth register is more accurate using the fixed position of the table as the reference point.
• Workpiece cannot be "pulled" into a spiral bit (the way it can sometimes be pulled into an overhead bit).
• Under-the-table vacuum sawdust and chip removal system works along with gravity to keep sawdust and chips out of the way--even on deep cuts--eliminating the major cause of bit chatter and burns. It also allows for faster cuts.

Solid construction using only the finest components has given Onsrud Inverted Routers a reputation for excellence.

The model 750SS gives you:

• Precision performance with medium depth cuts (up to 3/4" with oak or 1" with pine, for example).
• 5 horsepower three phase motor (single phase optional) for 20,000 rpm through a heavy duty spindle.
• 30" throat.
• Pneumatically retracting cutter and guide pin.
• Fog mist lubricated bearings.
• Automatic prelubrication of spindle bearings each time spindle is started--bearings never start dry.
• Self-releasing collet (no risky tapping of expensive carbide bits to free them).
• Full one year limited warranty.
• A 24" x 36" x 1 1/2" acrylic-topped table that absorbs cutting vibrations without marring the workpiece (other tables available on request).
• Direct factory "Hot Line" for technical support.

The 500SS C.R. Onsrud Inverted Router® features a cast iron overarm, machine frame and spindle mount, along with hardened steel (lapped finish) spindle slides resulting in a very rigid, accurate machine. The model 500SS is built to the same high quality standards as the larger, award winning 500SS series Onsruds.

Simple templates allow all types of complex shapes, internal cut outs, slotting, hole boring, mortise cuts, and shaping.

A sample part can be reproduced by tracing the sample with the overhead guide pin on a direct one-to-one ratio, or offset the pin to cutter diameter to increase or decrease the part size.

The exhaust system is chambered through the table grill to the rear of the machine for connection to a plant dust collection system or standard shop vacuum. The sawdust is removed so the cutter is constantly cutting new wood instead of recutting the sawdust. This allows you to maintain faster feed rates and keeps cutters sharp longer. It also helps yield better finishes, requiring less sanding.

With the model 500SS you can produce better quality work up to ten times faster than with a hand router, band saw, or scroll saw.

The model 500SS is more versatile than conventional table routers. The solid cast iron base provides a stable, much safer mounting. The cutter is below the table when not cutting. It allows plunge work and keeps chips out of the motor for greatly increased life.

The overhead guide pin means no need for expensive "bearing tools" and other inherent performance and saftey problems.

There are many other benefits to Onsrud Inverted Router® design. See the Onsrud piece entitled "Here's Why Inverted Routers Are Better" for more details.

Contact you authorized C.R. Onsrud Distributor or C.R. Onsrud, Inc. for details.

Specifications

• Machine frame and spindle mount - cast iron
• Support base - welded steel, sound insulated
• Throat capacity - 20"
• Table - 24" x 36" acrylic topped phenolic with dust collection chamber
• Motorized spindle - 22,000 RPM, 3 1/4 H.P. commercial duty production router motor. 120 V., 1PH (220V., 50/60Hz optional). Raised and lowered by mechanical foot pedal (other router motors available on special request--including high cycle.)
• Guide Pin Assembly - Extends and retracts automatically by pneumatic cylinder controlled by a foot pedal. 4 quick change guide pins included, 1/4", 5/16", 3/8", 1/2". (Any size available optionally)
• Upper and lower depth stop - Infinitely adjustable through entire range of spindle travel
• Three position turret depth stop - This allows three infinitely adjustable cutting heights with the simple movement of a lever. This is particularly helpful when cutting very thick material that must be cut in two passes, or while cutting at several different levels on the same part.
• Foot pedal lock - Locks the spindle in an UP position for shaping work and is also especially handy when routing very large parts. (Frees operator to step back from the machine to a more comfortable feed position.)

Requirements:

• Dust collection: 200 CFM
• Compressed air: 100 psi, 0.5 CFM
• Shipping weight: 420 lbs

Price - $3340.00 FOB Factory