who typically want to process synthetic and natural diamond tooling to levels better than 50nm,” explained Robert Bullman, sales manager at Coborn.
To verify performance, Coborn can perform a TRC [tool radius check], which is essentially a microscope with image analysis software to measure tool radius and radius waviness. “The system generates custom-designed
QC graphical data sheets that we can then supply with the associated tool,” explained Bullman. “Our PG Series machines generate waviness values of sub 50nm, which is market leading. The bearings are a key part of the machine, allowing users to process diamond tooling to these accuracies.” Coborn’s PG6 also features a closed loop
aydon bearings from R.A. Rodriguez (U.K.) are helping boost the performance of Coborn Engineering’s Planetary Grinding
(PG) Series machines. In this extremely high- precision application, the bearings are an essential element of the machine, allowing users to process diamond cutting tools to radius form waviness levels of 50nm (0.00005mm). The latest version of Coborn’s PG Series –
the PG6 – is an automatic, ultra-high precision grinding machine for processing natural or synthetic SCD tools. According to the company,
this is a world-first engineering solution that relies on high-quality bearings for the precision manufacture of controlled waviness and complex geometry tools. For this R.A. Rodriguez has supplied Kaydon KD series high-precision, angular contact, preloaded bearings in duplex (back-to-back) configuration. Each Coborn PG machine requires a pair of these 7in diameter bearings. “We selected Kaydon bearings from
R.A. Rodriguez (U.K.) because they give us the precision needed by PG machine users,
With many years of experience in solving sealing problems
associated with a wide range of applications and industries, Moontown’s technical and design support team, can assist in the choice of the correct seal design and material in applications involving extremes of temperature, pressure, hazardous or aggressive chemicals. Moontown also offers a complete production service which we call ‘Powder to Part’, made up of the following areas: • Bespoke seal design service • In-house PTFE billet production • Experienced CNC programmers • Advanced on-site CNC machining • In-house spring winding • In-house EDM facilities for tool making
Moontown’s capabilities range from 2mm rod seals to
2000mm piston seals, designed for either linear, rotary or flanged face seal applications. Effective sealing solutions can be achieved with PTFE spring energised and hydraulic seals for applications in the chemical, oil and gas, automotive, food and pharmaceuticals as well as a wide range of general engineering fields. These are complimented by a wide range of metal O, C and E seals, including spring energised resilient metal seals.
Moontown Ltd is a Nottingham based manufacturer of spring energised, hydraulic and associated sealing products, using PTFE and other high performance plastics. Moontown is also a distributor of metal seals.
Established in 1996, the company has invested in NORSOK
M-710 REV 2 and API 6A Annex F sour fluid immersion testing approvals, as well as being ISO 9001:2015 approved.
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nano-stop for more accurate finishing of the radius form, while the high-resolution PoE camera works in conjunction with an improved optical lens system to enable tool measurements and geometry validation. The company currently manufactures around
20 PG Series machines every year, although this number is now rising as global economies pick up following the Covid-19 pandemic.
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