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Overview

Efficiency You Can Count On

KUHN Knight RC 300 Series builds on the decades‑old reputation of heavy‑duty mixers that deliver exceptional quality with low horsepower requirements. Maintaining the same 500–950 ft³ capacities, the RC 300 adds new improvements and options to meet the demands of modern producers.

KUHN Knight RC 300 Series Reel Commercial mixers provide superior durability and performance with innovative options that separate them from the competition. Available in trailer, truck and stationary models, these mixers feature enhanced durability and operator‑friendly upgrades that boost efficiency, reduce maintenance and improve control helping operations save time, minimize wear and maximize productivity. For dairy and beef producers mixing rations with high percentages of roughages or distillers grains, this design gives them the ability to efficiently handle a wide range of materials.


The RC 300 Series delivers smooth, consistent mixing thanks to its patented Helix® Reel, the only open-center reel on the market that allows unobstructed feed flow. Twisted reel arms further enhance this design, providing smooth running performance without load spikes. Working in tandem, the efficient reel and auger system reduces power draw, lowering operating costs, saving fuel and minimizing tractor horsepower requirements while still maintaining superior mixing performance. Built for longevity, the RC 300 Series incorporates heavy-duty drive and box components, with optional 304 stainless steel liners available to extend durability and provide years of reliable service. Feeding efficiency is also improved through a high-positioned discharge door that enables most operations to feed directly into J bunks with a simple slide tray, while optional conveyors add reach, deliver even feedout and minimize waste. To meet diverse operational needs, KUHN offers trailer, truck and stationary models, each customizable with augers and liners to ensure optimal performance across applications. Truck-mounted versions are available with mechanical or hydrostatic drives, offering operators straightforward functionality alongside advanced features that enhance overall efficiency and ease of use.



Features

Superior Feed Movement

The reel thoroughly mixes rations gently without causing excessive damage to the feed ingredients, preserving precious nutritional value for your herd. The large reel gently tumbles material for vertical feed movement and helps feed move up into the side augers. The upper auger moves material rearward, while the lower auger moves material forward for end-to-end mixing. The lower auger also keeps the door continuously charged during feedout.

Low Fuel Consumption

Quality performance, with the lowest possible input costs, is the goal of every operation. The fast, gentle mixing of KUHN Knight reel mixers helps maximize efficiency and minimize operating expenses. The reel and auger design eliminates much of the force and pressure seen with other mixer types, resulting in low horsepower requirements and, correspondingly, less fuel consumption for economical operation.

Consistent Mixing and Discharge

KUHN Knight reel mixers provide a consistent mix, even with small batches, for a balanced ration from beginning to end. Their quick, even discharge with a more complete cleanout helps save time and places feed right where you want it.

Simple Feeding

With a high discharge point, these mixers allow for the use of a simple slide tray in most feeding situations. The long tray makes it easy to feed deeper into most bunks while preventing feed loss from the wind. This dependable, low-cost option also results in less maintenance.


The Unique Helix® Reel

The Helix reel has a robust build and has been thoroughly tested to withstand the most challenging conditions. The design of the reel crossbars evens the pressure across the length of the reel for smoother operation and feed engagement.


The open-center design eliminates obstructions in the reel and provides superior feed movement and unparalleled mixing action. The benefits are unmistakable, with faster, more consistent mixing, improved load leveling, optimized mixer space utilization and fewer dead spots for the ultimate in ration quality.


A mix bar runs diagonally across the center of the reel to help ensure consistent feed movement throughout the entire mixing chamber. The reel crossbars keep feed moving efficiently around the outside of the chamber. The secondary mechanical mixing action from the mix bar provides a fast and thorough mix even in wet, heavy rations with large amounts of distillers grains.

Heavy-Duty Drive

The reliable heavy-duty roller chain drive runs in oil and has spring tensioned poly idlers for long life. A single-handled latch provides easy access to the oil bath and secure closure to protect the drive system. An improved lip seal keeps oil in, and dirt and debris out to help minimize wear on drive components. Splined drive shafts allow a strong, reliable torque transfer and provide easier sprocket alignment and maintenance.


The heavy-duty drive, standard on RC 370 and RC 395 models, provides heavier chains throughout and a larger diameter countershaft and bearings for added strength and extended life in the toughest mixing conditions and heaviest use cycles. Optional on RC 350 and 360 models.

Heavy-Duty Rubber Wiper

Durable rubber wipers sweep close to the RC mixer tub for superior cleanout, combining strength and flexibility for long-lasting performance.

Rugged Undercarriage

Straight-single and walking-tandem bogie axle options are available for trailer models, providing flexibility for varied terrain. Both feature heavy-duty spindles and hubs for maximum durability and long life.

Large, Heavy-Duty Discharge Door

A heavy-duty discharge door ensures durability and secure closure, with bracing to prevent fatigue or bowing. Strong pivot mount and self-aligning link bar reduce strain on linkage. Large opening enables fast, even unloading. Optional Stainless-Steel door available for high wear applications.

Auger Options

  • The grain-auger option provides gentle handling of more delicate feeds like flaked corn to maintain ration quality and prevent fines while still being able to handle a good amount of forages in the ration.

  • The roughage-auger option features notched, sectional flighting with welded-in, self-sharpening, hardened knives for better hay handling.

  • With the optional Roughage Maxx® knife option, scalloped knives are added to the lower augers to maximize hay processing. The knives provide a more consistent particle length and more even blending. The result is a more uniform and palatable ration with reduced sorting for improved feed efficiency.

  • The small grains augers offer the gentlest mixing in the RC series. Continuous flighting and elimination of auger knives and notches provide smooth operation and fast unloading of flowable rations that are made of predominantly flowable grain or grain like material.

  • The biosolid augers are the toughest option, built for heavy-duty industrial use with solid flighting—no knife notches or welded knives. They are designed to unload bulky, dense material with trimmed auger flighting near the discharge door.

Multiple Discharge Options

To best suit your feeding needs, you can choose from a slide tray, chain and slat conveyor, or a 4-auger discharge to be equipped on your RC 300 Series mixer.


Slide Tray

The high discharge point of the Reel mixers allows use of the simple, dependable, low-cost slide tray in most applications. It has simple hydraulic controls and the long discharge tray reaches deeper into bunks to prevent feed loss from the wind. Magnets are standard on slide tray.


Chain and Slat Conveyor

Rugged chain and slat conveyor options provide the ultimate in durability and long life. Heavy-duty components ensure reliable service and multiple conveyor length options offer unmatched flexibility to match different feeding situations. Available on all trailer models except RC 395.


4-Auger Discharge

Center-rotating augers bring the feed to the center of the discharge to increase overall capacity and provide a smooth, even discharge for all ration types. The 4-auger discharge comes standard with power tip-off and built-in magnets. RC 350, 360 & 370 truck and trailer models only.


The discharge augers are simple to remove for easy service. Long-lasting, replaceable polyethylene chute liners prevent rust and limit wear.


As with the main auger drive, the discharge auger shafts are splined for a more positive power transfer and longer service life. The simplified drive design, featuring only two chains and a remote grease bank, results in easy service and maintenance.

Truck, Trailer & Stationary Models

To suit your operation’s needs, KUHN Knight RC 300 Series mixers are available in trailer, truck-mounted or stationary configurations.


Trailer models are the most popular configuration as they are the most economical and versatile. Being detachable allows the tractor to be used elsewhere on the farm when not in use for feeding. Tractors are adapted for on-farm conditions, and RC300 trailer mixers offer options to match difficult farm and field conditions such as a trailer fender option, high float tire option on select models, or a tandem axle undercarriage.


Truck-mounted models are a suitable option for those that have to feed cows at several different locations, with large travel distances. This option allows a feeder to quickly get from the mixing location to the feed bunk and back again.


Whether mixing wood chips or a ration for your livestock, KUHN Knight RC 300 Series stationary mixers are ideal for maximizing feeding efficiency and mixer throughput on any operation. Stationary mixers are perfect for producers with centralized feed storage and multiple mixers running throughout the day. By incorporating centralized mixing, one loader operator is often able to keep multiple mixers constantly running, greatly increasing mixing capacity and reducing labor. Also, with the addition of delivery boxes, the mixers do not experience the downtime from driving location to location, and in turn do not receive the additional stress which can be seen from constant travel.


Equipment

PTO Options

The RC300 Series offers a variety of PTO options to match needs. 540 or 1000 options are available on the smallest models, and 1000 1 3/8 or 1 ¾ PTOS are available for all sizes. Non-CV or CV options are available as well.

Single-Axle Trailer Fenders

Optional steel fenders are available for single axle RC 350, 360 and 370 mixers. These fenders bolt on to the trailer frame for simple installation and help keep the mixer tub and load cells clean.

Rough Maxx© Knifes

The Roughage Maxx System is a scalloped-knife option for the lower roughage auger. These knives provide efficient processing when incorporating up to 20% good-quality hay. The bolt-on scalloped knives are removable and replaceable, offering flexibility to change the amount of processing for different rations. The Roughage Maxx System works best with the patented Hay Maxx System and will help provide a more uniform ration.

Hay Maxx© Kit

The Hay Maxx System uses extra-hardened, sickle-type knives to process up to 20% hay by weight, helping incorporate dray hay into the ration. A backstop holds hay in place during processing. This system can handle a wide range of feedstuffs before they enter the mixing chamber, improving ration flexibility and speeding up mixing for greater efficiency. The result is a uniform ration with fewer fines compared to auger mixer processors. An optional hydraulic folding kit is available for the Hay Maxx pan, allowing it to fold down for easier passage through doorways.

Scale Systems

Different scale brands, models and options are available for all types of operations, ranging from very basic to high-end feed-tracking programs that use a remote scoreboard display. Optional remote indicators are available for placement that will allow easier viewing.

Stainless Steel Door

To extend the life of the mixer door, a door made with ¼" 304 Stainless Steel parent material is available as an option on the RC 300 series mixers. The stainless-steel door pairs well with the stainless-steel liners, ensuring a long-life solution. ​

Stainless Steel Liner Options

The partial liner covers the most critical wear areas in the mixer and provides added protection and longer life.


The full liner completely covers all the high wear areas, from front to back, for unmatched dependability and long service life. Both provide added protection when mixing more abrasive or corrosive materials, resulting in longer life of the unit shell.


Additional "biosolid" liners are available on truck and stationary models for the heaviest wear applications. Originally designed for high-wear industrial applications, biosolid liners extend above the mixer door, more fully cover the front panel, rear panel and hopper side. Just like the other liner options, high-quality 12-gauge 304 Stainless Steel is used for the RC stainless steel biosolid option.


Specifications

Capacity


RC 350 TRAILER

RC 350 TRUCK

RC 350 STATIONARY

RC 360 TRAILER

RC 360 TRUCK

RC 360 STATIONARY

RC 370 TRAILER

RC 370 TRUCK

RC 370 STATIONARY

RC 395 TRAILER

RC 395 TRUCK

RC 395 STATIONARY

Capacity

500 ft³ (14.2 m³)

500 ft³ (14.2 m³)

500 ft³ (14.2 m³)

600 ft³ (17 m³)

600 ft³ (17 m³)

600 ft³ (17 m³)

700 ft³ (19.8 m³)

700 ft³ (19.8 m³)

700 ft³ (19.8 m³)

950 ft³ (26.9 m³)

950 ft³ (26.9 m³)

950 ft³ (26.9 m³)

Maximum Net Load

15,000 lbs (6,804 kg)

15,000 lbs (6,804 kg)

15,000 lbs (6,804 kg)

18,000 lbs (8,165 kg)

18,000 lbs (8,165 kg)

18,000 lbs (8,165 kg)

SA: 16,800 lbs (7,620 kg)

TA: 21,000 lbs (9,525 kg)

21,000 lbs (9,525 kg)

21,000 lbs (9,525 kg)

28,000 lbs (12,927 kg)

28,000 lbs (12,927 kg)

28,000 lbs (12,927 kg)

Mixer Dimensions


RC 350 TRAILER

RC 350 TRUCK

RC 350 STATIONARY

RC 360 TRAILER

RC 360 TRUCK

RC 360 STATIONARY

RC 370 TRAILER

RC 370 TRUCK

RC 370 STATIONARY

RC 395 TRAILER

RC 395 TRUCK

RC 395 STATIONARY

Overall Height

SA: 111" (282 cm)

123" (312 cm)

84" (213 cm)

SA: 111" (282 cm)

TA: 114" (290 cm)

TA w/ Brakes: 112" (284 cm)

123" (312 cm)

84" (213 cm)

SA: 111" (282 cm)

TA: 114" (29 cm)

TA w/ Brakes: 112" (284 cm)

123" (312 cm)

84" (213 cm)

TA: 126" (320 cm)

TA w/ Brakes: 130" (330 cm)

139" (353 cm)

99" (251 cm)

Overall Length

246" (625 cm)

200" (508 cm)

-

276" (701 cm)

230" (584 cm)

-

306" (777 cm)

260" (660 cm)

-

298" (757 cm)

256" (650 cm)

-

Mixer Chamber Length

168" (427 cm)

168" (427 cm)

168" (427 cm)

198" (503 cm)

198" (503 cm)

198" (503 cm)

228" (579 cm)

228" (579 cm)

228" (579 cm)

216" (549 cm)

216" (549 cm)

216" (549 cm)

Overall Width - Mixer Only (No Discharge)

106" (269 cm)

106" (269 cm)

109" (277 cm)

106" (269 cm)

106" (269 cm)

106" (269 cm)

109" (277 cm)

106" (269 cm)

106" (269 cm)

109" (277 cm)

125" (318 cm)

125" (318 cm)

Tread Width

SA: 99" (251 cm)

-

-

SA: 99" (251 cm)

TA: 106" (269 cm)

TA w/ Brakes: 112" (284 cm)

-

-

SA: 99" (251 cm)

TA: 106" (269 cm)

TA w/ Brakes: 112" (284 cm)

-

-

TA: 115" (292 cm)

TA w/ Brakes: 103" (262 cm)

-

-

Mixing Specifications


RC 350 TRAILER

RC 350 TRUCK

RC 350 STATIONARY

RC 360 TRAILER

RC 360 TRUCK

RC 360 STATIONARY

RC 370 TRAILER

RC 370 TRUCK

RC 370 STATIONARY

RC 395 TRAILER

RC 395 TRUCK

RC 395 STATIONARY

Reel Speed

5.6 - 6.8 rpm

6.4 rpm

5.7 rpm

5.6 - 6.8 rpm

6.4 rpm

5.7 rpm

5.6 - 6.8 rpm

6.4 rpm

5.7 rpm

5.2 rpm

5.2 rpm

5.2 rpm

Reel Arms

-

5

5

5

5

5

5

5

5

5

5

5

Reel Diameter

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

70" (178 cm)

84" (213 cm)

84" (213 cm)

84" (213 cm)

Reel driveshaft Diameter

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

5" (13 cm)

8" (20 cm)

8" (20 cm)

8" (20 cm) Tube

Lower Auger Flighting Diameter

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

28" (71 cm)

28" (71 cm)

28" (71 cm)

Lower Auger Flighting Thickness - Sectional

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Front: 3/4" (1.9 cm)

Rear: 5/8" (1.6 cm)

Lower Auger Tube - Outside Diameter

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

Lower Auger Drive Shaft Diameter

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

5" (12.7 cm)

5" (12.7 cm)

5" (12.7 cm)

Upper Auger Flighting Diameter

22" (56 cm)

22" (56 cm)

22" (56 cm)

22" (56 cm)

22" (56 cm)

22" (56 cm)

24" (61 cm)

24" (61 cm)

24" (61 cm)

28" (71 cm)

28" (71 cm)

28" (71 cm)

Upper Auger Flighting Thickness

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

1/2" (1.3 cm)

Upper Auger Tube - Outside Diameter

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

6 5/8" (17 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

8 5/8" (22 cm)

Upper Auger Drive Shaft Diameter

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

3 1/2" (8.9 cm)

4" (10.2 cm)

4" (10.2 cm)

4" (10.2 cm)



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