Evenheat KO Series Heat Treating Oven

This KO 18 heat treat oven delivers optimal results and that's why it is the most popular! It's impeccably sized for knife makers and machinists alike!

Chamber Dimensions 

18" Deep x 9" Wide x 5.5" High - 0.52 Cubic Feet

(45.7 cm Deep x 22.9 cm Wide x 14 cm High - 14.7 L)

Outer Dimensions

23.5" Deep x 20" Wide x 19.5" High (includes the 8" stand)

(59.7 cm Deep x 50.8 cm Wide x 49.5 cm High)

Maximum Temperature

2400°F (1316°C)

Electrical

240 Volts, 13 Amps, 3120 Watts, 60Hz, Single Phase

​Power Cord Plug Configuration - NEMA 6-20

​Consult with an electrician for proper fuse panel, service wire size, receptacle, and fusing requirements. It is possible that this model, when used as intended for its expected purpose, may be defined as "continuous use". Continuous use is defined as continuous, full power on for 3+ hours.

Model is available in 200V, 208V, 220V and 230V. If want one of these options, it is by request. After submitting your order - send an email to support@potterypulse.com to ensure this request is not missed.

Model will operate properly on both 50Hz and 60Hz. To say it another way, line frequency has no effect. It doesn't matter. Evenheat recommends that you check your operating voltage before ordering or placing the oven in service.

​Model not available in 3 phase Delta or Y designs.  KO Series models are produced in a single phase design only. 3 phase designs require the circuit be divided into 3 loads or circuits, as it were. The KF Series models contain 1 heating circuit (albeit comprised of 2 heating elements). So, no-go on that.

​Shipping Weight

​102lb. (46.4 Kg) - Approx.

​Shipping Method

​Freight Truck​​

NRTL Agency Listing
TUV Listed United States and Canada - Designed and Tested to CSA & U/L 499​​
 
KO models may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Not too short, not too long. The KO 22.5 offers just the right depth.

Chamber Dimensions 

22.5" Deep x 9" Wide x 5.5" High - 0.65 Cubic Feet

(57.2 cm Deep x 22.9 cm Wide x 14 cm High - 18.4 L)

Outer Dimensions

28" Deep x 20" Wide x 19.5" High (includes the 8" stand)

(71.1 cm Deep x 50.8 cm Wide x 49.5 cm High)

Maximum Temperature

2400°F (1316°C)

Electrical

240 Volts, 15 Amps, 3600 Watts, 60Hz, Single Phase

​Power Cord Plug Configuration - NEMA 6-20

​Consult with an electrician for proper fuse panel, service wire size, receptacle, and fusing requirements. It is possible that this model, when used as intended for its expected purpose, may be defined as "continuous use". Continuous use is defined as continuous, full power on for 3+ hours.

Model is available in 200V, 208V, 220V and 230V. If want one of these options, it is by request. After submitting your order - send an email to support@potterypulse.com to ensure this request is not missed.

Model will operate properly on both 50Hz and 60Hz. To say it another way, line frequency has no effect. It doesn't matter. Evenheat recommends that you check your operating voltage before ordering or placing the oven in service.

​Model not available in 3 phase Delta or Y designs.   KO Series models are produced in a single phase design only. 3 phase designs require the circuit be divided into 3 loads or circuits, as it were. The KF Series models contain 1 heating circuit (albeit comprised of 2 heating elements). So, no-go on that.

​Shipping Weight

​114lb. (51.8 Kg) - Approx.

​Shipping Method

​Freight Truck​​

NRTL Agency Listing
TUV Listed United States and Canada - Designed and Tested to CSA & U/L 499​​
 
KO models may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

The KO 27 is the perfect choice for lengthy, heavy-duty projects. Its depth makes it unbeatable for any ambitious task. (Whoa, that's deep.)

Chamber Dimensions 

27" Deep x 9" Wide x 5.5" High - 0.77 Cubic Feet

(68.6 cm Deep x 22.9 cm Wide x 14 cm High - 21.8 L)

Outer Dimensions

32.5" Deep x 20" Wide x 19.5" High (includes the 8" stand)

(82.6 cm Deep x 50.8 cm Wide x 49.5 cm High)

Maximum Temperature

2400°F (1316°C)

Electrical

240 Volts, 15 Amps, 3600 Watts, 60Hz, Single Phase

​Power Cord Plug Configuration - NEMA 6-20

​Consult with an electrician for proper fuse panel, service wire size, receptacle, and fusing requirements. It is possible that this model, when used as intended for its expected purpose, may be defined as "continuous use". Continuous use is defined as continuous, full power on for 3+ hours.

Model is available in 200V, 208V, 220V and 230V. If want one of these options, it is by request. After submitting your order - send an email to support@potterypulse.com to ensure this request is not missed.

Model will operate properly on both 50Hz and 60Hz. To say it another way, line frequency has no effect. It doesn't matter. Evenheat recommends that you check your operating voltage before ordering or placing the oven in service.

​Model not available in 3 phase Delta or Y designs.   KO Series models are produced in a single phase design only. 3 phase designs require the circuit be divided into 3 loads or circuits, as it were. The KF Series models contain 1 heating circuit (albeit comprised of 2 heating elements). So, no-go on that.

​Shipping Weight

​126lb. (57.3 Kg) - Approx.

​Shipping Method

​Freight Truck​​

NRTL Agency Listing
TUV Listed United States and Canada - Designed and Tested to CSA & U/L 499​​
 
KO models may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

This list is why the KO Series is the right choice!

High Temperature Heating Elements

The KO Series sports a special Sandvik heating element wire, commonly used for ceramic applications, and usable up to 2400°F (1316°C). Evenheat trusts this wire for all their products: it winds securely, stretches evenly and endures long-term. Just top-notch alloy at work!

Thick, 3" Firebrick Construction

The KO's are built for unparalleled performance, thanks to their 3 inch thick Thermal Ceramics firebrick. That's a full half inch thicker than the standard, making for faster heat-up times and higher temperature potential. Crafted with exclusive Georgia-born materials and made with expertise in the USA, these firebricks are—without a doubt—the best around.

Quiet Drive Solid State Relay Option

Our Quiet Drive Solid State Relay is an optional must-have for all KO oven models. Its 120 On/Off cycles per second capability ensures a high degree of temperature control. Unlike mechanical relays, it doesn't wear down and will bring peace of mind knowing it'll last for the entire life of the unit. Get the facts about our exclusive solid state relay - why it's the best choice - by clicking on the Solid State Relay tab. Trust us, you WANT this option! 

Side Opening Door

The KO models' doors swing open a full 180°, positioning the ultra-hot door away from you so you can focus on your tasks. This ingenious design feature keeps you safe and makes heat treating much easier. You can efficiently remove very hot materials from the chamber to quench them- all while keeping yourself far from danger. This brilliant design is a game-changer!

Multiple Control Options

Evenheat partners with leading control manufacturers SDS Industries and Bartlett Instruments to bring you the top-tier performers, features, and programming convenience. The KO Series feature the highly-sought-after TAP touchscreen control from SDS Industries and Bartlett Instruments' Rampmaster 3. Check out the Controller Options tab for more info!

Relay Access Port

Say goodbye to tedious control panel removal and internal wiring worries! All KO models come equipped with a Relay Access Port, giving you quick and easy access to the relay with only a screwdriver, no panel-off required! Plus, mechanical relays are guaranteed to fail at some point - but with the relay access port, you'll be ready when they do. It's really that simple!

Side-only Element Design

Using a design inspired by culinary bladesmiths, the KO Series eliminates the rear wall heating element and offers superb air flow so all parts of the chamber can be used. Get incredible front to back temperature distribution with no effect on positioning in the chamber. This groundbreaking design sets the new standard in heat treating ovens!!

Cool Touch Handle

The revolutionary handle/latch on the swing-out door is located at the front for added convenience. This spring-loaded, phenolic handle is cool to the touch and designed to be operated with one hand for maximum convenience. As an added bonus, it also functions as the door latch! Evenheat has a lot to thank their loyal customers for, as the innovative design was shaped by their valuable feedback, making operation smoother than ever!

Swing View Control Enclosure 

The Swing View Adjustable Enclosure fits all temperature controls on the Evenheat KO Series Heat Treating Oven - except for the Set-Pro. So easy to use, you can pivot the control to a comfortable viewing angle, program the oven and - with one beautiful swing - restore the enclosure to its original position. Perfectly aligned with the TAP touchscreen control, you'll love the convenience of the swing view!

Power Interrupt Switch

This optional power interrupt switch adds a layer of safety to the Evenheat KO Series Heat Treating Oven, suspending power from all heating elements when the door is opened and turning it back on with it is closed. It is a true safety switch, purposely designed to protect the user, and those who plan on entering the oven during use should consider adding it.

Door Shield

The KO oven comes equipped with a door shield, designed to guard against firebrick wear and tear while providing a cooler surface at the door and handle.

2400°F (1316°C) Maximum Temperature

The KO models can reach a sizzling 2400°F (1316°C)! So, no matter what type of steel you're working with - even some that don't exist yet - you'll be able to make the most of your heat treating needs!

Strong Stand and Tool Rest

The improved stands of the KO's now include a tool rest - way to go!

Loud Alarm Kit

Upgrade with this deafening option. Are you tired of missing critical temperature cues in your busy workshop? Say goodbye to those frustrating moments and revolutionize your control system with this game-changing Loud Alarm Kit option. The KO models come standard-equipped with a feature that sets it apart from the competition: a Loud Alarm Output Jack. This cutting-edge technology is designed to elevate your control experience, ensuring you never miss a beat when it comes to reaching the perfect temperature and executing timely quenching. With the Loud Alarm Kit, you'll enjoy a booming 80db of piercing alarm sound that demands your attention. No more straining to hear or missing those crucial cues.

Say goodbye to mechanical relays and the repair bills that go with them, thanks to this solid state system with no moving parts and no wear-and-tear.

Experience the superior operation of Evenheat's Quiet Drive Solid State Relay System, featuring a tightly controlled heating element for optimal performance that's designed to last.

What is a relay?

Solid state relays (SSR) provide a powerful, reliable alternative to the traditional mechanical relays which contain metal contacts that open and close with an electrically arcing magnet coil. Unlike their mechanical counterparts, SSRs contain a single, solid block of semiconductor material with no moving parts or arcing. For kilns, SSRs offer superior temperature control and numerous advantages over their mechanical counterparts.

Advantage 1 - Eternal Life (you get the idea)

The durability advantage of SSRs is clear; with no moving parts and no arcing, they have a much longer life expectancy than mechanical relays. If you've ever heard the clicking sound of a kiln or furnace during use, that's the sound of its mechanical relays operating. With repeated cycles of on/off, these relays experience considerable wear over time, eventually failing and leaving you with a costly repair. But, with Evenheat's SSRs, you can expect silent, reliable operation throughout the lifetime of your kiln or oven!

Advantage 2 - Keep it tight! (The temperature, that is)

With mechanical relays, the balancing act between good control and relay life creates a limit of no more than one cycle per 10 to 14 seconds. This allows for good control, but for really tight temperature control, this time must be shortened. On the other hand, a solid state relay operates at an incredible 120 times per second. This provides a great opportunity for the control to make even faster decisions, resulting in precise temperature control. All of Evenheat's controls, except for the Set-Pro, are designed to utilize the speed of a solid state relay.

Advantage 3 - Longer Heating Element Life

The solid state relays used in the Evenheat KO Series Heat Treating Oven are designed with Zero Crossing, which means they turn on and off at exact 0V when the AC power line voltage fluctuates. This extends the lifespan of heating elements, which should last significantly longer than those powered by mechanical relays that lack this feature. With Zero Crossing, the heating elements experience the love of being powered on and off at the correct voltage. Zero Crossing is the perfect match for heating elements!

Better by Design - 30 Amp Rated

Evenheat made sure to choose reliable solid state relays that are rated for 30 amps while running them at only 15 amps. This gives them the extra headroom they need to ensure that the system will work well and continue to work well over time. Plus, running the SSRs at half of their full capacity means they remain cool under a 15 amp load, staying completely within the derating curve for proper operation. This way, Evenheat can guarantee their SSRs will last the life of the unit.

Better by Design - SSR Heatsinks Externally Mounted

Efficient SSR performance requires proper cooling, which Evenheat ensures by mounting its SSR heatsinks externally to let air pass freely. To avoid heat build-up, they don't place these sinks within the control enclosure. Further, mounting the SSR heatsinks internally would lead to premature failure of the components and reduce their life-cycle. Evenheat solves these issues by placing these heatsinks on standoffs that allow a gap between the control enclosure and SSR. This gap increases air flow, as well as preventing heat transfer between the two, for ultimate SSR operation - confirmed by a 6 year zero failure record!

Better by Design

Temperature regulation is the most vital aspect of the kiln. Evenheat partners with SDS Industries and Bartlett Instrument to bring you the leading design, technology, and performance. Its renowned control is the TAP, a touchscreen with the highest power. Developed with all methods of firing and heat processing in mind, the TAP epitomizes advanced control. For those who prefer a more classic style, the Rampmaster control features full firing control with a familiar 4-digit setup.

TAP II

The Evenheat TAP II is a top-of-the-line temperature controller that is so intuitive, so powerful, and so user-friendly that you will be blown away! With just one touch, you can access your heat treat programs, which are displayed in easy-to-read text. Then, the TAP II will walk you through creating and refining your programs until they are exactly what you need. You can save as many programs as you want, and you don't have to worry about losing them. What's more, the TAP II is designed to be incredibly consistent and accurate, and when paired with the Quiet Drive Solid State output, you can count on top-notch performance! If that weren't enough, you can also easily access the app for the TAP II, available on iOS and Android, through its Wi-Fi or Ethernet ports. Simply amazing!

Rampmaster 3

The Rampmaster 3 is the gold standard in heat treating ovens and comes complete with a four-digit display, twelve program slots to store your preferred heat treat programs, a numbered keypad, and a program review key. Best of all, it's compatible with the revolutionary Quiet Drive Solid State Relay System for even greater control and convenience.

Estimated order to ship lead time is 6 weeks.