The JM High Torque Difference

 

     The JM High Torque Difference
 

 
 

Made from hot rolled 8620H fine grain steel

Improves durability

Extends part life

Reduces distortion from heat treat.

2X to 10X less expansion of the toolholder

Reduce toolholder Expansion

Increase Tool Life

Increase Feed rates

Increase toolholder Balance

Increase Rigidity

Increase Production

Reduces Costs

Increase Profits

 

 

 

Why Use High Torque Retention Knobs?

-The High Torque Knob has been engineered to stop toolholder expansion.  When a toolholder is expanded it will not fit properly in the spindle. An expanded toolholder is free to move in the spindle causing excessive harmonics, damage to the toolholder and spindle, and poor tool-life. Our High Torque Knobs have a relief cut beneath the flange of the retention knob. This relief allows the force of the threads to be applied into a deeper cross section of the toolholder, thus eliminating expansion.  Through studies, JMPP has found that when a toolholder is properly mated with the spindle, carbide tool-life can be increased by 10% to 300%.
 
 Click Here to see tool studies on industry retention knobs.
 
Signs Of Retention Knob Expansion
 
 
When inspecting a toolholder that has been in a machine spindle examine it for fretting rings around the small end of the taper and large end.  The fretting ring that is found on the small end of the taper is formed from the retention knob bellmouthing the taper of the toolholder.  The fretting ring on the large end of the toolholder below the Gage Line is from the toolholder moving in the spindle.  When the toolholder is expanded it is free to move and is riding on the two high contact points.   The rest of the toolholder is making limited contact with the spindle.  When a High Torque Retention Knob is placed in the toolholder it prevents the toolholder from expanding.  A holder that is not expanded will properly seat with the spindle.  A visual inspection of the toolholder will show that a toolholder that is properly seated will have an even wear pattern from the gauge line to the small end of the taper.
 
 
Features
  • Shoot Peened - To Prevent Fatigue
  • Hard Turned After Heat Treating – For Optimum Fit and Contact
  • UNJ Radiused Cut Threads - For Proper Alignment
  • Black Oxided -To Prevent Rust
  • Carburize, Quench and Temper to Rc 56-60 on Surface and Rc 35-40 Core
  • Minimum 63 Micro Finish on Hardened Surface
  • Piloted
  
 

Installation

Proper installation is key for High Torque Retention Knobs to work properly. It is critical HT Knobs be installed with a torque wrench and retention knob socket. Using a torque chart (supplied with purchase), set the torque wrench for 10% over desired amount and install knob. Then back the knob out and adjust torque wrench to recommended torque value and install knob. After installing the knob examine the flange of the knob for full face contact with the toolholder. JMPP recommends using a light comparator or visually holding the toolholder up to light and examining. Knobs that do not make full flange contact are subject to breakage. If your retention knobs are not making full flange contact please contact us for technical assistance.  The Manufacturer  does not recommend the use of a thread sealant unless the retention knob is subject to high harmonics.   


 

The High Torque Retention Knob in High Strength Steel

Newman Tools also offers its High Torque Knobs with the option of 9310 Steel. This will allow a knob to take 3 times the impact before breaking when compared to a standard knob made from 8620 steel. With increased feed rates and higher forces, tools are being pushed now more than ever. To find out more about the availability and cost of the 9310 series of High Torque Retention Knobs please contact our sales team for more information.

   

 

 

 

   

 

 

link to retention knob index page

 

Sign up for our Email Newsletter
For Email Marketing you can trust

servicing the Canadian provinces and territories of Newfoundland, NF, NL, Nova Scotia, NS, New Brunswick, NB, Prince Edward Island, PEI, PE, Quebec, PQ, QC, Ontario, ON, Manitoba, MB, Saskatchewan, SK, Alberta, AB, British Columbia, BC, Northwest Territories, NT, Nunavut, NU, Yukon, YT, and the states of Alabama, AL, Alaska, AK, Arizona, AZ, Arkansas, AR, California, CA, Colorado, CO, Connecticut, CT, Delaware, DE, District of Columbia, DC, Florida, FL, Georgia, GA, Hawaii, HI, Idaho, ID, Illinois, IL, Indiana, IN, Iowa, IA, Kansas, KS, Kentucky, KY, Louisiana, LA, Maine, ME, Maryland, MD, Massachusetts, MA, Michigan, MI, Minnesota, MN, Mississippi, MS, Missouri, MO, Montana, MT, Nebraska, NE, Nevada, NV, New Hampshire, NH, New Jersey, NJ, New Mexico, NM, New York, NY, North Carolina, NC, North Dakota, ND, Ohio, OH, Oklahoma, OK, Oregon, OR, Pennsylvania, PA, Rhode Island, RI, South Carolina, SC, South Dakota, SD, Tennessee, TN, Texas, TX, Utah, UT, Vermont, VT, Virginia, VA, Washington, WA, West Virginia, WV, Wisconsin, WI, Wyoming, WY We can ship via UPS to Afghanistan , Aland Islands , Albania , Algeria , American Samoa , AS, Andorra , Angola , Anguilla , Antigua & Barbuda , Argentina , Armenia , Aruba , Australia , Austria , Azerbaijan , Azores , Bahamas , Bahrain , Bangladesh , Barbados , Belarus , Belgium , Belize , Benin , Bermuda , Bhutan , Bolivia , Bonaire , Bosnia , Botswana , Brazil , British Virgin Isles , Brunei , Bulgaria , Burkina Faso , Burundi , Cambodia , Cameroon , Canada , Canary Islands , Cape Verde , Cayman Islands , Central African Republic , Chad , Chile , China , Colombia , Comoros , Congo , Cook Islands , Costa Rica , Croatia , Curacao , Cyprus , Czech Republic , Democratic Republic of Congo , Denmark , Djibouti , Dominica , Dominican Republic , Ecuador , Egypt , El Salvador , England , Equatorial Guinea , Eritrea , Estonia , Ethiopia , Faeroe Islands , Fiji , Finland , France , French Guiana , French Polynesia , Gabon , Gambia , Georgia , Germany , Ghana , Gibraltar , Greece , Greenland , Grenada , Guadeloupe , Guam , GU, Guatemala , Guernsey , Guinea , Guinea-Bissau , Guyana , Haiti , Holland , Honduras , Hong Kong , Hungary , Iceland , India , Indonesia , Iraq , Ireland , Israel , Italy , Ivory Coast , Jamaica , Japan , Jersey , Jordan , Kazakhstan , Kenya , Kiribati , Kosrae , Kuwait , Kyrgyzstan , Laos , Latvia , Lebanon , Lesotho , Liberia , Libya , Liechtenstein , Lithuania , Luxembourg , Macau , Macedonia (Fyrom) , Madagascar , Madeira , Malawi , Malaysia , Maldives , Mali , Malta , Marshall Islands , MH, Martinique , Mauritania , Mauritius , Mayotte , Mexico , Micronesia , Moldova , Monaco , Mongolia , Montenegro , Montserrat , Morocco , Mozambique , N. Mariana Islands , Namibia , Nepal , Netherlands , Netherlands Antilles , New Caledonia , New Zealand , Nicaragua , Niger , Nigeria , Norfolk Island , Northern Ireland , Norway , Oman , Pakistan , Palau , PW, Panama , Papua New Guinea , Paraguay , Peru , Philippines , Poland , Ponape , Portugal , Puerto Rico , PR, Qatar , Reunion , Romania , Rota , Russia , Rwanda , Saba , Saipan , San Marino , Saudi Arabia , Scotland , Senegal , Serbia , Seychelles , Sierra Leone , Singapore , Slovakia , Slovenia , Solomon Islands , South Africa , South Korea , Spain , Sri Lanka , St. Barthelemy , St. Christopher , St. Croix , St. Eustatius , St. John , St. Kitts & Nevis , St. Lucia , St. Maarten , St. Martin , St. Thomas , St. Vincent/Grenadines , Suriname , Swaziland , Sweden , Switzerland , Syria , Tahiti , Taiwan , Tajikistan , Tanzania , Thailand , Timor Leste , Tinian , Togo , Tonga , Tortola , Trinidad & Tobago , Truk , Tunisia , Turkey , Turkmenistan , Turks & Caicos Islands , Tuvalu , Uganda , Ukraine , Union Island , United Arab Emirates , United Kingdom , United States , Uruguay, US Virgin Islands , VI, Uzbekistan , Vanatu , Vatican City State , Venezuela , Vietnam , Virgin Gorda , Wales , Wallia & Futuna Islands , Western Samoa , Yap , Yemen , Zambia , Zimbabwe
we try to ship to the world largest cities Tokyo,Japan, Seoul, South Korea, Mexico City, Mexico , New York City, USA , Mumbai, India , Jakarta, Indonesia , Sáo Paulo, Brazil, Delhi, India , Osaka/Kobe, Japan , Shanghai, China , Manila, Philippines ,Los Angeles, USA ,Calcutta, India , Moscow, Russian Fed., Cairo, Egypt, Lagos, Nigeria, Buenos Aires, Argentina , London, United Kingdom , Beijing, China , Karachi, Pakistan , Dhaka, Bangladesh , Rio de Janeiro, Brazil ,Tianjin, China , Paris, France , Istanbul, Turkey , Lima, Peru , Tehrãn, Iran, Bangkok, Thailand , Chicago, USA , Bogotá, Colombia , Hyderabad, India , Chennai, India , Essen, Germany , Ho Chi Minh City, Vietnam , Hangzhou, China , Hong Kong, China , Lahore, Pakistan , Shenyang, China , Changchun, China , Bangalore, India , Harbin, China , Chengdu, China , Santiago, Chile ,Guangzhou, China , St. Petersburg, Russian Fed , Kinshasa, DRC , Baghdãd, Iraq , Jinan, China , Houston, USA , Toronto, Canada, Yangon, Myanmar (Burma), Alger, Algeria Philadelphia, USA, Qingdao, China , Milano, Italy , Pusan, South Korea, Belo Horizonte, Brazil, Almadabad, India , Madrid, Spain , San Francisco, USA, Alexandria, Egypt , Washington DC, USA , Wuhan, China , Dallas, USA , Guadalajara, Mexico, Chongging, China , Medellin, Colombia, Detroit, USA , Handan, China , Frankfurt, Germany , Porto Alegre, Brazil , Hanoi, Vietnam , Sydney, Australia, Santo Domingo, Dom. Rep., Singapore, Singapore , Casablanca, Morocco , Katowice, Poland , Pune, India , Bangdung, Indonesia, Monterrey, Mexico ,Montréal, Canada , Nagoya, Japan , Nanjing, China , Abidjan, Côte d'Ivoire, Xi'an, China , Berlin, Germany , Riyadh, Saudi Arabia, Recife, Brazil , Dusseldorf, Germany, Ankara, Turkey , Melbourne, Australia, Salvador, Brazil , Dalian, China , Caracas, Venezuela, Adis Abeba, Ethiopia, Athina, Greece, Cape Town, South Africa, Koln, Germany , Maputo, Mozambique, Napoli, Italy