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Cushman Chuck 'circa 1870'



Combination chucks allow for precise, individual jaw adjustment by means of a jaw screw between the master jaw and the base jaw. Available in both manual and power chucks.


AccraLock jaw adjustment system allows precise positioning of the chuck jaw by means of an angular rack on the front face of the master jaw.


Cushman Industries History

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In 1830, Simon Fairman, developed the first hand operated chuck and received a patent for his invention.  His daughter married A.F. Cushman of Hartford, a pattern maker at Colt Fire Arms.  In 1862, Cushman acquired his father-in-law’s burgeoning business and began chuck manufacturing at his residence.  The original quarters were soon outgrown necessitating the construction of a new building, equipped for manufacturing chucks.   The company moved to the facility pictured above in 1914 and continued to thrive through the years.   

A.F. Cushman was succeed by his son and later by his grandson, R. Cushman.   A.P. Sloan was one of the company's original incorporators became president in 1923.   He was largely  responsible for the product design and was awarded many patents during his long career.   Mr. Sloan was succeeded by his son and later by his grandson, H.E. Sloan Jr.

Through innovation and product development, Cushman became the world's leading chuck maker - awarded over fifty patents.  The growth of Cushman was the result of fundamental know-how, developed over the years, coupled with intensive engineering and practical experience.

During the 1980's, Cushman Industries wasn't immune to the challenges seen in the US machine tool industry.   Seeing shrinking markets and changing times, Cushman was acquired in the mid 1990's by TSD, a division of DeVlieg-Bullard.   Under TSD's leadership, Cushman Industries regained it's footing and maintained it's market position.  

In early 2005, Cushman Industries was acquired by Republic Drill (Chicago, IL).   Republic Drill is a leading manufacturer of cutting tools with nationwide sales and distribution.   Republic Drill brings a financial stability to Cushman Industries required to compete in the 21st century.   Also, Republic Drill respects Cushman Industries' proud past and inherent value to it's customers - offering a complete line of manual chucks, power chucks, Combination chucks "AccraLock" chucks special purpose chucks, pneumatic and hydraulic actuators, boring mill jaws, repair parts, service and consulting.

Today,  the new Cushman Industries, partnering with workholding specialists from around the world, stands ready to provide world-class products and services at competitive prices and deliveries with the highest levels of professionalism and courtesy.        

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Republic Drill acquires Cushman Industries

January 25, 2005 - Chicago, IL

Republic Drill is pleased to announce the acquisition of Cushman Industries - Frankenmuth, MI.     Our mission is to meet the worldwide demand for high-quality manufactured products along with outstanding service – while still providing our customers with the lowest possible prices.  In keeping with our strategy of market growth and development, Republic Drill embraces M&A opportunities that offer synergistic growth potential.   As stated by Gary Poteshman, General Manager-Republic Drill, "we saw the long-term potential with Cushman.   With over 140 years of product development and thousands of chucks in the field, the potential was obvious.   We know a good deal when we see it."  

Republic Drill has invested in it's new acquisition - expanding inventory - stock chucks and cylinder off the shelf.    Also, with world-class workholding partners, the new Cushman brings classic Cushman products to the market at competitive prices and deliveries.

Cushman Industries is positioned and committed to regain it's former leadership position within the workholding industry.   As stated by Mr. Poteshman, "we have all the tools needed to get back on top.    We have great products, field tested and proven through many years of customer experience.   We regularly get calls from customers needing service on chucks that are over 50 years old!   How can you argue with that product durability and success?"

For more information on Cushman Industries and it's full line of product, contact:

Gary Poteshman
Cushman Industries
2058 North 15th Ave.
Melrose Park, IL
(800) 886-3456 (ph)
(708) 865-1042 (fax)
inquiry@cushmanindustries.com

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Cushman Industries appoints IL & WI representative

December 8, 2005 - Chicago, IL

Cushman Industries is pleased to announce the appointment of LaFox Tool as it's exclusive representative in Illinois and Wisconsin territories.   LaFox Tool is a machine tool accessory sales firm with many years of workholding experience.

Illinois and Wisconsin are strong markets for Cushman products.  "We look forward to working with LaFox Tool to service existing customers as well as expand new business there." says Gary Poteshman, Cushman Industries GM.  Serving OEM customers, machine tool distributors and house accounts, LaFox Tool focuses on technical sales and workholding consulting.

For more information on Cushman Industries in Illinois and Wisconsin, contact:

Spencer Hastert
LaFox Tool Inc.
5N936 Kettlehook Ct.
St. Charles, IL 60175
(630) 209-9605 (ph)
(530) 377-5209 (fax)
shastert@lafoxtool.com
 www.lafoxtool.com

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Cushman introduces new 20-915 Series Quick Jaw Change Chucks

September 6, 2006 - Chicago, IL

Why Buy Cushman Counter-centrifugal Power Chucks versus other brands?

Cushman Industries  Quick Change Jaw Chuck is fast and will save you time and money. The Cushman Quick Change Jaw Chuck is the only Quick Change Jaw Chuck that is internally counter-balanced to maintain higher jaw force at high rpm. It is a  lever wedge design that maintains high jaw force at speed, plus this design unlike other counter-balanced chucks has a very low histerisis. If you look at other brands of Quick Change Jaw power chucks they are not internally counter-balanced, also notice the master jaws are very small and lightweight. The function of the lighter master jaws is less centrifugal force (loss of grip at speed) because the Chuck has no counter-balance system. With a Cushman counter-balanced Chuck it utilizes a full size master jaw that allows the use of a full size standard top Tooling I.E. 1.5 mm 60-degree, Acme or others top jaws without sacrificing jaw force. 

Other Chuck manufacturers that use the smaller master jaws offer expensive master jaw adapters that raises the top jaws farther away from the chuck face, plus the added weight of the adapter increases grip loss at speed. When you add the extra weight of a standard top jaw the jaw force loss increases and it may be required to reduce the rpm to avoid losing the part out of the chuck from lack of jaw force.

  • Change Chuck Jaws in less then 60 seconds
  • Accuracy .0005”
  • Counter-centrifugal design for safe high speed turning
  • High speed up to 6000 rpm.
  •  Lever Wedge design for low historicist.
  • Bodies made from forged steel with jaws-ways hardened and ground.
  • Heavy Duty master jaw and jaw way design with more bearing surface, rigidity and longer life.
  • Higher mechanical advantage requires lower hydraulic operating pressure.
  • No special top jaws required. Uses Standard off the shelf or existing top jaws. I.E. 1.5mm x 60 degree, Acme, and others without jaw adapters that create additional jaw force loss.
  •  Master Jaws accept Warner Swasey style collet pads standard.
  • Counter-balance feature allow high rpm use when gripping thin wall parts.
  • Standard .005” Accra-set adjustment feature
  • High low capable if required.
  • Expanding mandrel attachment optional
  • Utilizes existing Hydraulic Actuators

For more information on Cushman Industries and our full line of product, contact:

Gary Poteshman
Cushman Industries
2058 North 15th Ave.
Melrose Park, IL
(800) 886-3456 (ph)
(708) 865-1042 (fax)
inquiry@cushmanindustries.com

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ASME B5.60 Workholding Chucks - Jaw Type Chucks

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ASME has announced the introduction of new B5.60 Workholding Chucks standard.    The new standard has the following description:

The standard titled, Workholding Chucks: Jaw Type Chucks, comprises six parts, with each covering a specific aspect of workholding chucks, as follows: ASME B5.60.1: General Description and Definitions of Terms ASME B5.60.2: Chuck-to-Spindle Interface ASME B5.60.3: Jaw Mountings ASME B5.60.4: Performance Testing ASME B5.60.5: Safety Code of Practice ASME B5.60.6: Chuck Assembly: Sizes and Designation

 Standards can be purchased from ASME through this link.

 

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Copyright © 2005 Cushman Industries. All rights reserved.
Last modified: 06/20/07.