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HB Bearings Stays Loyal with Fourth Vista CNC Grinder Purchase
In Huddersfield, HB Bearings Ltd, a leading designer and manufacturer of high-precision bearings, has expanded its capabilities with the acquisition of another Kellenberger VISTA universal grinding machine from Jones & Shipman Hardinge. Known for their expertise in producing low-volume, high-precision components for niche industries, HB Bearings continues to build on its reputation as one of the UK's top bearing manufacturers.
With nearly five decades in the industry, HB Bearings serves clients globally, boasting an extensive archive of bearing specifications and designs that are among the most comprehensive in Europe. "Our success hinges on a skilled workforce and unwavering commitment to quality," remarks Managing Director Graham Hirst. "Investing in cutting-edge machinery like the Kellenberger VISTA has always been a priority, and this newest addition is our fourth CNC grinder."
Looking ahead, HB Bearings is set to absorb Gamet Bearings, a company renowned for manufacturing super-precise tapered roller bearings. The integration of Gamet's operations into HB's Huddersfield facility will necessitate further investments in advanced grinding technology. "Given the stringent 1.5-micron tolerance requirements for Gamet products, we're planning to acquire additional Vista CNC machines," says Hirst. "We trust their performance and reliability."
Currently, HB operates three Vista UR 75/1000 CNC grinders alongside the newly acquired Vista SE model, all sourced from Jones & Shipman Hardinge. The Vista SE builds upon the UR/75 platform with enhanced guarding and control systems, featuring a UR wheelhead capable of external, internal, and face grinding. Its swivel-mounted wheelhead employs pre-stressed, high-precision spindle bearings, ensuring superior surface finishes and longevity. This machine also supports grinding between centers and chucking, reflecting its innovative design.
HB Bearings has equipped the Vista SE with a HF-dresser on the upper x-axis table, enhancing its versatility. Simplified programming through the Kellenberger Kel-Easy and Kel-Iso menu-driven interface, powered by the Fanuc 0i control system, makes operation straightforward. Key features include precise tailstock adjustment within ±60 µm, linear guides on the X-axis, a conventional slide mechanism in the Z-axis, and the ability to handle workpieces weighing up to 100 kg. With a center distance of 1000 mm, the machines maintain grinding lengths accordingly.
"The decision to buy the Vista SE was driven by our growing workload and past satisfaction with the Vista series," explains Hirst. "These machines are robust and deliver the consistent accuracy we need. While 5-micron tolerances are standard, we can meet demands down to 2 microns when required. The Vista's ability to produce intricate, high-precision profiles while maintaining concentricity and dimensional accuracy is crucial."
The materials processed typically include SAE 52100 steel, though specialized applications might involve AMS6444 (52100 VIM-VAR), a cleaner variant, or even Cronidur, which boasts strength several times greater than 52100. "All these materials present challenges due to their hardness and the tight tolerances we must achieve," concludes Hirst. "The Kellenberger machines have proven themselves invaluable, making them a sound investment."