News & Press

Find out what's going on at Jones & Shipman.

News & Press


Comprehensive display of high precision metal cutting and grinding technology from Hardinge Inc. at AMB

AMB 2018:  Stuttgart, Halle 5, Stand B80. The latest Kellenberger 100 platform concept cylindrical grinding machine features alongside two Hardinge…
Read more »


UK machine debut and Okamoto introduction are highlights for Jones & Shipman at MACH

Stand 875 – Hall H20 The UK debut of an entirely new Kellenberger universal grinding machine concept and a first…
Read more »


Comprehensive grinding solutions on offer from Hardinge Grinding Group at Grindtec

Kellenberger, the Swiss manufacturer of high precision grinding machines, is representing the interests of the international Hardinge Grinding Group at…
Read more »


Kellenberger 1000 – Swissness par excellence

State of the art technology, a cool design and top ease of use. For 20 years now, the firm Kellenberger…
Read more »



Bearing specialist keeps the faith…

Maintaining its unrivalled position as one of the UK’s premier specialist bearing manufacturers, Huddersfield based HB Bearings Limited has continued its tradition as an investor in technology with the addition of a third Kellenberger KEL VISTA CNC cylindrical grinding machine. HB-PR1HB has specialised in all facets of bearing design, manufacture, modification and repair since being established in 1972. It supplies many and varied bearing designs for engine, transmission, wheel and suspension applications in addition to meeting the challenges of F1 manufacture. The demands of F1 are contrasted with keeping pre-WWII cotton machines running on the Indian sub continent and HB has an extensive library of bearing designs and manufacturing drawings to call upon if a rare or obsolete assembly is needed. Meeting today’s demands of very high precision, fast turn-around’s and exacting repeatability has necessitated that HB employs state of the art machinery alongside its traditional manual machines and in its grinding shop the three Kellenberger UR 75 / 1000 machines take pride of place, the newest acquired straight off the stand at last year’s MACH exhibition. Over the years the company has purchased many manual grinders from Jones & Shipman Hardinge Ltd, Kellenberger’s sister company in the Hardinge Group and these remain fully operational, accommodating the significant amounts of short run, one off or prototype work that HB undertakes. HB-PR2 When it opted for CNC grinding the first of the three KEL VISTA UR 75 / 1000 machines was installed in 2003, to be followed by two more as business flourished and the complexity, speed of turn around and requirement for total repeatability became paramount. Designed to be a cost-effective CNC alternative to hydraulically-controlled cylindrical grinding machines, features of the KEL-VISTA UR175 / 1000 include the user-friendly Kellenberger KEL-EASY menu based CNC programming which greatly simplifies operator programming knowledge and – because of its ease of use – opens up the opportunities for wider application of the machine in the workshop. The machine control is a Series 21-TB supplied by Fanuc. Key features include the ability to micro-adjust the tailstock in the range of +/-60µm, linear guides on the X-axis, a classical slide arrangement in Z-axis and the ability to accommodate a workpiece up to 100 kg in weight. As the designation implies, the distance between centres on the machines supplied to H&B is 1000 mm, as is the grinding length. The compact design features a coolant tray which is separated from the machine base, an integrated transport system and swiveling upper table. The swiveling workhead – being suitable for grinding between dead centres and for chucked work – is a further example of the machine’s progressive design. The thermally-optimised bearings guarantee the highest roundness and dimensional accuracy. As HB managing director Graham Hirst explains, the attraction of purchasing a further machine at MACH was born from increased capacity and the availability of the unit. “The existing Kellenberger’s had made a significant impact on the business and when visiting MACH I was mindful of future growth in demand. The fact that we could have the machine off the stand and contributing in weeks swung the deal. “HB is steeped in every aspect of bearing manufacture, refurbishment, alteration and repair. We do a vast amount of one-off work where the manual machines and operator skills come into their own but there is also increasingly the highly demanding high precision work such as bespoke repeat motorsport bearings that simply cannot be accommodated on manual machines.” HB-product-2Mr Hirst also highlights the challenging materials that are used in the manufacturing. “The majority of bearings are manufactured from standard SAE 52100. However, certain motorsport applications may require more specialised bearing steel where we use Cronidur which has a value which exceeds 52100 bearings by a factor of between 8 and 10. Cronidur has excellent corrosion resistance being up to 100 times better than 440C material. “AMS6444 (52100 VIM-VAR) is also used. This is a super clean steel also used for special motorsport bearing manufacture. It has good wear and fatigue properties as well as improved thermal stability. For the manufacture of motorsport wheel bearings where high wear resistance and strength at high temperatures is required we use tool steel. Bearings manufactured using M50 steel can also incorporate balls made from the same material. “The common denominator with all is they are difficult to machine and with the micron tolerances we have to achieve with exact repeatability, the Kellenberger machines are more than up to the challenge. They have been an excellent investment,” he adds.